Flying boats played an unheralded, but crucial part in some of World War II’s biggest naval battles. For example, pilots in Consolidated PBY Catalinas made the discovery of the Japanese carriers at Midway and helped locate the German battleship Bismarck.
So, why aren’t flying boats still serving in the United States military today? That’s a good question. After all, both China and Russia are still using them and, starting in 2000, have introduced new versions, like the AVIC AG-600 and the Beriev Be-200. Yet the last flying boat in U.S. service was the HU-16 Albratros, which the Coast Guard retired in 1983.
Flying boats have the advantage of using the ocean as a runway, which, unlike other launching points, can’t be cratered by bombs. Any atoll, bay, or cove could be a forward base for these patrol aircraft. But they are also huge, which imposes range and performance penalties that other, land-based planes don’t face.
The end of the flying boat was largely due to the island-hopping campaign of World War II. The United States military built a lot of airbases throughout the course of that war, many of which had long runways. This allowed long-range, land-based planes, like the Consolidated PB4Y Liberator/Privateer to operate.
The PB4Y, a version of the B-24 adapted for maritime patrol, was able to haul 12,800 pounds of bombs at a range of 2,796 miles. The Martin P5M Marlin, by comparison, could only haul 8,640 pounds of weapons 2,051 miles. Although land-based planes outclassed flying boats in terms of cargo transport, they remained useful in search-and-rescue missions, but the helicopter soon pushed them out of that role, too.
Flying boats could remain useful, but the fact is global construction and advances in aviation technology have made them largely redundant in many military roles. These majestic vessels will hang around, but there are fewer and fewer taking flight each day.
Get ready for a new A-10 budget fight. Air Force Chief of Staff Gen. David Goldfein wants to fund new initiatives in connectivity, space, combat power projection, and logistics starting in 2021 – to the tune of $30 billion on top of what it is already using. One way to do that, says Todd Harrison, a defense budget analyst at the Center for Strategic and International Studies, is to retire $30 billion worth of legacy aircraft.
That is, get rid of the old stuff to make room for the new.
While getting rid of these aircraft isn’t the only way to make room for the new initiatives and save $30 billion, it is the fastest route to get there, and many of the retirements make sense. Some of the planes’ missions are obsolete, some of the airframes are currently being updated with newer models, and at least one can’t even fly its primary mission due to treaty obligations.
The B-1B is already scheduled for retirement in the 2030s, but retiring the program early could save up to .8 billion. At 32 years old, the Lancers are already struggling with a 50 percent mission-capable rate. It can’t even complete the missions for which it was designed as a nuclear deterrent. The Air Force’s fastest bomber, the one that carries the biggest bomb loads, can’t carry nuclear weapons under the terms of the 1994 START I agreement with Russia.
Also scheduled for retirement in the 2030s, the B-2 Spirit has a mission-capable rate of 61 percent and is scheduled to be replaced by the new B-21 Bomber in the late 2020s. Retiring the B-2 early could save as much as .9 billion.
A-10 Thunderbolt II
The Air Force’s 281 A-10s are mission capable 73 percent of the time and are its primary close-air support craft. The average A-10 is 38 years old, and even though the bulk of the A-10 fleet has just been scheduled to get new wings, canceling the re-winging and retiring the Warthog could save as much as .7 billion.
Retiring the 59 heavy tankers in the U.S. Air Force fleet would save the service billion if they do it before 2024 – when they’re scheduled for retirement anyway. This may create a tanker shortage because the new Boeing KC-46 Pegasus tanker isn’t quite ready for prime time.
RC-135V/W Rivet Joint
This signals intelligence and optical and electronic reconnaissance aircraft is more than 56 years old but still kicking around the Air Force waiting for a yet-undeveloped Advanced Battle Management System to replace its old tech. While retiring it before 2023 would save .5 billion, it would create a gap in electronic and signals intelligence capacity.
E-3 Sentry AWACS
These 39-year-old planes are mission-ready just 66 percent of the time and are undergoing modernization upgrades. If the Air Force scraps its modernization along with the rest of the airframe before 2023, it could save billion.
U-2 Dragon Lady
Getting rid of the 37-year-old U-2 would save some billion for the Air Force. The Air Force could then rely on the much more efficient RQ-4 Global Hawk drone for ISR.
Also waiting for the unknown advanced battle management system, the 16 Joint Surveillance Target Attack Radar aircraft in the Air Force are already scheduled for retirement. But actually retiring the aircraft would save the USAF .7 billion.
When investigating new ways of transmitting and communicating information, sometimes it helps to see the light.
This is the idea behind a new technology being investigated by the Research, Development and Engineering Command Soldier Center’s Expeditionary Maneuver Support Directorate, along with its industry partner, VLNComm of Charlottesville, Va.
“It’s a wireless system but instead of using radio frequencies it uses infrared light,” said Frank Murphy, an engineer on EMSD’s System Development and Engineering Team. “It is called LiFi, or light fidelity. It has many advantages.”
Murphy has been investigating ways to utilize the emerging commercially available technology in a tactical environment as the physical characteristics appear to solve many issues facing wired and wireless field command post network systems.
The technology will be used in expeditionary mission commands. EMSD has come up with a concept for using LiFi within any enclosed mission command platform. LiFi eliminates the problems associated with the time-consuming task of running data lines in tactical operation centers and command posts. Moreover, since the technology does not use radio waves, it cannot be detected outside the confines of the mission command platform.
“The technology uses light waves to transmit and receive data between the servers and the user’s computer,” said Melvin Jee, the leader of EMSD’s Command Post Platforms Branch. “As light cannot pass through walls, the enemy cannot detect the signal.”
The transceiver (pictured here) is simply put into a USB port and will then detect the signal and users will be hooked up to the IT network of their command post. Then a Soldier just needs a light shined overhead to have network access.
(Photo is courtesy of the RDECOM Soldier Center Expeditionary Maneuver Support Directorate)
Murphy’s investigation into the technology was inspired in part by Douglas Tamilio, the director of RDECOM Soldier Center, sharing an article about LiFi with RDECOM Soldier Center leadership. Murphy’s investigation was also inspired by the vision of Claudia Quigley, the director of EMSD, and the RDECOM Soldier Center’s ongoing partnership with the 82nd Airborne. The RDECOM Soldier Center and the 82nd Airborne have worked together extensively to find out ways to best meet the needs of warfighters.
Murphy explained that Quigley and other members of the directorate were working with the 82nd Airborne during a field exercise. During the exercise, Murphy noticed that the setup of IT cabling was proving to be a time-consuming and difficult task.
“They had a hard time setting up their IT network, which isn’t usually an NSRDEC area, but we felt that we could address the need,” said Murphy. “Tactical speed is absolutely essential for command post setup. LiFi is potentially faster, easier to install and doesn’t have the security and exposure issues of other technologies. LiFi is un-hackable and untraceable when used within the command post shelter.”
“It’s virtually impossible to find the wavelength the data is being transmitted on, so if LiFi is detected, it’s hard to intercept the data stream,” said Jee.
EMSD is working with industry partners. Murphy explained that the commercially available technology was modified to fit a tactical environment. The technology will affect how soldiers communicate and, thus, carry out a mission.
“A command post of any size is an information processing center,” said Murphy, “They take information from the field whether it comes in from a drone, soldier/squad reports, other personnel in the area, satellite information, information from wheeled vehicles, or from behind the front lines — all this information gets fed to the command post staff. They make a decision and then the information goes right back out. Lives depend on this communication.”
“LiFi is part of NSRDEC’s plan to provide a fully integrated platform with all of the necessary infrastructure in order for the warfighter to set up his command post,” said Jee. “Just as a house is fully integrated with power, lights, and network cabling — allowing the homeowners to just concentrate on the furnishings — NSRDEC plans to provide a fully functional house, allowing the warfighter and program managers to provide the “furniture.'”
“In a command post, everyone has a job to do and they have their information chain,” said Murphy.
“All these soldiers need network access. With this, you simply shine the light over their head. After you hook the transceiver into the USB port, the transceiver will detect the signal and you will be hooked up to the IT network of your command post. It’s as simple as that. We also hope to have it integrated into the wiring harness for the lighting so we can just roll up the tent and pack it away during a move.”
Murphy emphasized that the NSRDEC project is really a team effort and that several entities at the Natick Soldier Systems Center were important to the development of the technology. He also received “great guidance” from his branch chief, Melvin Jee, and from his team leader, Connie Miles-Patrick, System Development and Engineering Team, as well as the DREN team and people in the Natick Contracting Division.
He also credited the use of the Base Camp Integration Lab, or BCIL, which was created by and is expertly run by, Product Manager Force Sustainment Systems. A first-generation Li-Fi system prototype was recently set up at the BCIL and successfully demonstrated the capability to send and receive data using the BCIL’s IT network.
“The people at the BCIL were incredible,” said Murphy. “They gave us the perfect platform to showcase the tactical capabilities of this device. This project really showcases what Natick is all about. The Natick team dove in with both feet. Great things happen when people believe in each other and in an idea. We all want to help the soldier.”
Murphy believes that LiFi is truly the wave of the future.
“The demand for data inside the command post is only going to continue to increase,” said Murphy, “So data quantity and quality need to improve to meet this demand. This technology can be hooked up permanently in rigid wall mission command platforms, but it can be used anywhere. We will be bringing world-class communications, security, speed, and capability to the frontline soldier. Information in the field is a weapon. This technology will help the warfighter make better decisions and be more effective and lethal in the field. This changes everything in the IT network system. It’s a game changer.”
Military uniforms have been made from a variety of fabrics over the years: Cotton, wool, polyester blends… all have had their turn as what uniforms are made of. Now a new spin on one of the oldest fabrics could come into play.
That fabric, of course, is silk, which first entered the scene in China almost four millennia ago. Only this isn’t the silk that is used for the high-fashion dresses you see on the red carpet. That is from silkworms. According to a report from Marketplace.org, this silk is from spiders.
Okay, before you get carried away – no, this is not quite like the Spider-Man suits. The key, though is that the spider silk is strong. It has to be. Spider silk makes webs, which spiders usually use to catch food.
There’s just one problem. You need a lot of spiders to make silk, and spider’s just don’t get along with each other. We’re not talking things that can be worked out. Face it, when the critters you are counting on to produce material try to eat each other, productivity’s gonna be taking a nosedive. That doesn’t get the uniforms made.
So, the answer has been to genetically engineer silkworms to produce spider silk. This is not the only method in operation. Michigan State University researchers have figured out how to make a silk-like product from the deoxyribonucleic acid, or DNA, of spiders, and DNA sequencing is becoming much cheaper than it was in the past.
Either way, the material that is produced will have far more applications than the Kevlar used in the uniforms of present day. The spider silk could also be used to make protective underwear as well as improved body armor. That’s good news for the troops.
Secretary of Defense James Mattis officially started the U.S. Department of Defense’s review of the country’s nuclear arsenal Tuesday, according to the Pentagon.
President Donald Trump directed Mattis to conduct a review after taking office in January. The full-scope review comes as concerns over the aging nuclear arsenal are growing in both the White House and Congress.
“In National Security Presidential Memorandum 1, dated Jan. 27, the president directed the secretary of defense to conduct a Nuclear Posture Review to ensure the U.S. nuclear deterrent is safe, secure, effective, reliable and appropriately tailored to deter 21st-century threats and reassure our allies,” said Pentagon Chief Spokesperson Dana White in a statement.
Deputy Secretary of Defense Robert Work and Air Force Gen. Paul Selva, vice chairman of the Joint Chiefs of Staff, will lead the review in cooperation with “interagency partners,” according to White. A final report will be issued at the end of the year.
The review comes at a time when the U.S. is facing increased nuclear threats. North Korea continues to advance its nuclear program and has increased missile testing in the last two years. Russia is believed to have violated a decades-old nuclear agreement banning the deployment of intermediate-range ballistic nuclear missiles. The Russian military is engaged in a military modernization program that includes both its strategic and tactical nuclear weapons.
A significant portion of the current U.S. nuclear arsenal is based on designs from the 1960s and 1970s. The Heritage Foundation’s 2017 Index of Military Strength rated the U.S. nuclear arsenal “strong,” just one step down from “very strong,” but leaders within the military, the White House and Congress are concerned over the aging arsenal.
“The United States must greatly strengthen and expand its nuclear capability until such time as the world comes to its senses regarding nukes,” said Trump tweeted in December.
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For over 20 years, American warfighters have worn the Joint Services Lightweight Integrated Suit Technology (JSLIST) on the battlefield and during training for their CBRN protection. But its days are numbered. Brought into service in the 1990’s and now nearing the end of its shelf life, the JSLIST will be replaced by the Uniform Integrated Protective Ensemble, Increment 2 (UIPE II) in the very near future. What will UIPE II look like? That’s not certain at the moment, but there are some new technologies and advancements that are likely to have an impact:
Better materials – Anyone who has worn the JSLIST remembers the black powder residue that coated your skin and uniform after taking it off. That’s because it had layers of activated charcoal that consisted mostly of carbon. Nowadays, carbon beads are all the rage and can provide adequate protection at a lighter weight.
Lamination of materials – A recent breakthrough in research proved that removing the air gap between layers of materials can lower the thermal burden on the soldier by a large margin. Picture this…future CBRN suits will most likely be layers of materials. So if you have an outer shell, a carbon bead layer, an aerosol barrier, and a comfort liner sewn together in one suit, the thin layers of air in between those materials will heat up. But laminating them together squeezes out all the air and ends up making the soldier cooler. And not just a little, but a lot. That’s huge.
Undergarments – Using the same concept as lamination, undergarments can keep the warfighter cooler than an overgarment by removing the air next to the skin. Research has shown that wearing an undergarment as close to the skin as possible reduces the heat stress. It will take some getting used to, but the UIPE increment 1 suit consists of an undergarment under the duty uniform and is being fielded now.
Conformal fit – Once again, getting rid of all that air brings the temperature down, so a closer fitting uniform with less material reduces the thermal burden on the warfighter while also reducing the potential for snagging on surfaces as he does his mission.
Better seams and closures – Contamination doesn’t get through a suit unless it has a path and those paths are almost always along seams and closures. Seams and closures are frequently the weakest points that allow particles to get through, but several advancements will counter that.
Omniphobic coatings – Have you ever seen that video of ketchup rolling off a dress shirt? Well, it’s out there and it works. Now think of how effective that concept can be for chemical agents. If 50% of the agent sheds off the uniform and falls to the ground before it has a chance to soak into the suit, that’s half the contamination that can reach the trooper. Omniphobic coatings are still in their early stages of development, but they could be game changers when matured.
Composite materials – Just because you can make a suit out of one material doesn’t mean you should. Future suits will have different materials in different areas, like stretchy woven fabrics in the torso (where body armor is) and knit materials that offer less stretch but more protection in the arms and legs.
Overall lower thermal burden – Here’s where the money is. Almost all of these factors contribute to the one big advantage everyone who’s ever worn MOPP 4 wants to hear – less heat stress – which equates to warfighters being able to stay in the suit and do their jobs longer with a lower chance of being a heat casualty. Break out the champagne.
Flame resistance – Because catching on fire sucks. Most uniforms these days have flame resistant coatings or fabrics, but therein lies the challenge. When you add up all the other technologies, the big question is how do you do it all? How do you coat a suit with omniphobics and flame resistance while also laminating composite materials, making it conformal fitting and lowering the thermal burden while also providing an adequate level of CBRN protection, which is the most important aspect of all? Really smart people are working on that.
A family of suits – Common sense tells us one size does not fit all. The DoD has a history of procuring one suit for everyone, like the JSLIST is now fielded to all warfighters. But slowly that has been changing. Everyone has a different job to do while wearing CBRN suits. Some warfighters need a low level of protection for a short period of time while others need more protection for longer periods. A family of suits instead of one is the answer.
MOPP 4 sucks. It’s just a basic tenet of warfighting. We embrace the suck and drive on, but with the progress CBRN suits have made recently, we won’t have to embrace quite as much suck as before.
The Pentagon’s funding of MIT’s “beerbots” is getting some attention lately. Congress, reasonably, has posed the question of, “Why is the Pentagon researching beer delivery robots, especially while hotels and bars are already deploying robot bartenders?”
Well, the answer is a little more logical than you might think. So, Alexa, crack open a cold one and let’s talk about beerbots.
Waiters that are part of MIT’s “beerbot” program go into an office to work with humans.
First off, we think it’s awesome that Congress accepted the possibility that the military was researching beer-delivery robots in order to distribute cold beers more cheaply (and was seemingly okay with it so long as it wasn’t redundant). That being said, the actual MIT program is focused on figuring out how to get robots to best coordinate their actions in uncertain environments, something that could prove vital for everything from future hospitals to underground fighting.
See, MIT was building a system of cooperative robots, robots which could communicate with each other and share sensor data and other observations to work more efficiently. When they designed a complex, real-world situation to test them in, one obvious angle was to have them serve drinks in an office. And, surprise, the drink that graduates students want is beer.
And so, the “beerbots” were born. There’s a “PR2” robot that picks up drinks and places them in coolers which are carried by the “turtle bots,” and the turtle bots act as waiters. The turtle bots move from room to room, taking orders and either filling the orders or marking that the room has no orders.
And here’s the key part: The robots share their data with each other. The PR2 doesn’t know what orders are placed until the turtles get close, and the turtles rely on each other to map out routes and obstacles and to share drink orders to figure out the most efficient path to fill them.
Soldiers with the 1st Battalion, 6th Infantry Regiment, take part in an Army Asymmetric Warfare Group program designed to improve military tactics, techniques, and procedures while fighting underground.
(U.S. Army photo by Lt. Col. Sonise Lumbaca)
This is actually a complex logic problem for the bots when they also have to deal with humans moving from room to room and constantly creating and changing obstacles in the office.
And this is basically the starter level for robots that could help humans on battlefields of the future. Take subterranean warfare, an area so important that the U.S. is considering naming it as a new warfighting domain, for example. Robots helping humans underground will be physically limited in how they can communicate with one another as concrete or subterranean rocks block electromagnetic signals and lasers. So, robots will need to aid the humans there by carrying loads or ferrying supplies, and then communicate directly with one another to determine what’s going on in each section of the underground network.
Paratroopers with 1st Battalion, 508th Parachute Infantry Regiment, fire during a squad live-fire exercise at Fort A.P. Hill, Virginia, March 14, 2018.
(U.S. Army photo by Spc. John Lytle)
Or, take a battle above ground. The Marines think they may be denied conventional radio communications in a war with China or Russia. Any robots helping them will only be able to communicate within a short range or by using lasers. Lasers, obviously, become short range communications when there are a lot of obstructions, like dense foliage or hills, in the way.
So, these robots will also need to complete moment-by-moment tasks while also coordinating their actions whenever they can communicate. All of this requires that the robots keep a constantly updating list of what tasks need completed, what humans haven’t been checked on in a while, and what areas are safe or unsafe for the robots to operate in.
MIT’s PR2 robot loads beers into the cooler of a “turtle” waiter bot as part of a program to improve robots’ ability to coordinate their actions in challenging environments.
Or, as MIT graduate student Ariel Anders said, “These limitations mean that the robots don’t know what the other robots are doing or what the other orders are. It forced us to work on more complex planning algorithms that allow the robots to engage in higher-level reasoning about their location, status, and behavior.”
“These uncertainties were reflected in the team’s delivery task: among other things, the supply robot could serve only one waiter robot at a time, and the robots were unable to communicate with one another unless they were in close proximity. Communication difficulties such as this are a particular risk in disaster-relief or battlefield scenarios.”
So, yeah, at MIT, a beerbot is never just about beer. And the actual tech underlying these social-media-friendly beerbots is actually necessary for the less sexy but more vital missions, like disaster relief. And, potentially, it could even save the lives of troops under fire or wounded service members in the next few years or decades.
Let the military have its beerbots. And, if they sometimes use them for beer instead of medical supplies, well, they would’ve found a way to get drunk anyways.
The littoral combat ship was intended to replace the Oliver Hazard Perry-class guided missile frigates. However, despite a promising 2010 deployment in the Southern Command area of operations by USS Freedom (LCS 1), the littoral combat ship (LCS) has struggled, mostly due to breakdowns.
That said, one major problem with the littoral combat ship was the fact that it is arguably underarmed. Both the Freedom-class and Independence-class littoral combat ships have an armament suite that consists of a 57mm gun, a number of .50-caliber machine guns, a launcher for the RIM-116 Rolling Airframe Missile, and a pair of MH-60 helicopters. While both ships have test-fired Harpoon and NSM anti-ship missiles, they haven’t been equipped with them.
USS Coronado (LCS 4) fires a RGM-84 Harpoon anti-ship missile in the Philippine Sea.
(U.S. Navy photo by Mass Communication Specialist 2nd Class Kaleb R. Staples)
Among the systems added to the guided-missile frigate version of the Independence-class would be a Mk41 vertical-launch system that would allow it to fire a wide variety of missiles, including the RIM-174 Standard SM-6 Extended Range Active Missile, the RIM-66 Standard SM-2, the BGM-109 Tomahawk, the RUM-139 Vertical-Launch ASROC, and the RIM-162 Evolved Sea Sparrow Missile. Anti-ship missiles like the Harpoon and NSM could also be installed on the new frigate, along with anti-submarine torpedoes.
The littoral combat ship PCU Omaha (LCS 12) in the Gulf of Mexico. The vessel has a light armament suite more suited for a Coast Guard cutter.
(U.S. Navy photo courtesy of Austal USA)
The Navy is planning to select one of the five designs as the basis for a 20-ship class in 2020. The ships will have the responsibility of escorting convoys and carrying out a host of other missions that the littoral combat ships lack the firepower to handle.
In what sounds like a page straight from the script of a Tim Burton film, the Pentagon has issued a solicitation to industry seeking biodegradable ammo that could also plant seeds.
No, this is not a Duffleblog post.
The solicitation, posted on the Small Business Innovation Research web site, states that the plan is to eventually replace “low velocity 40mm grenades; 60mm, 81mm, and 120mm mortars; shoulder launched munitions; 120mm tank rounds; and 155mm artillery rounds” with biodegradable versions with the intention of “eliminating environmental hazards.”
“Components of current training rounds require hundreds of years or more to biodegrade [and] civilians (e.g., farmers or construction crews) encountering these rounds and components do not know if they are training or tactical rounds,” the solicitation states. “Proving grounds and battle grounds have no clear way of finding and eliminating these training projectiles, cartridge cases and sabot petals, especially those that are buried several feet in the ground. Some of these rounds might have the potential corrode and pollute the soil and nearby water.”
The Pentagon is asking for biodegradable rounds that can also plant “bioengineered seeds that can be embedded into the biodegradable composites and that will not germinate until they have been in the ground for several months.”
The intent is to use the seeds to “grow environmentally friendly plants that remove soil contaminants and consume the biodegradable components developed under this project.” Furthermore, these plants supposedly will be stuff that animals can eat safely.
It is unclear how this RD effort improves combat readiness.
Past efforts to use “green” technology have proven very expensive. According to a July 2016 report from the Daily Caller, the Navy’s “Green Fleet” used biofuel that cost $13.46 per gallon on USS Mason – and the biofuel in question was only about 5.5 percent of the total fuel taken on board. Regular fuel cost $1.60 per gallon.
This is not to say some “green” programs have been duds. The Defense Media Network reported in 2013 that the Army’s M855A1 5.56mm NATO round for the M4 carbine, M16 rifle, and M249 squad automatic weapon had turned out to be comparable to a conventional 7.62mm NATO round, like those used in the M14 rifle or M240 machine gun.
Still, the best that can be said for the “green technology” push is that the results have been very spotty.
Two violent explosions in galaxies billions of light-years away recently produced the brightest light in the universe. Scientists caught it in action for the first time.
The explosions were gamma-ray bursts: short eruptions of the most energetic form of light in the universe.
Telescopes caught the first burst in July 2018. The second burst, captured in January 2019, produced light containing about 100 billion times as much energy as the light that’s visible to our human eyes.
Gamma-ray bursts appear without warning and only last a few seconds, so astronomers had to move quickly. Just 50 seconds after satellites spotted the January explosion, telescopes on Earth swiveled to catch a flood of thousands of particles of light.
“These are by far the highest-energy photons ever discovered from a gamma-ray burst,” Elisa Bernardini, a gamma-ray scientist, said in a press release.
Over 300 scientists around the world studied the results; their work was published Nov. 20, 2019, in the journal Nature.
The Hubble Space Telescope imaged the fading afterglow of the gamma-ray burst GRB 190114C (center of the green circle) and its home galaxy.
50 seconds to capture the brightest, most mysterious light in the universe
Gamma-ray bursts happen almost every day, without warning, and they only last a few seconds. Yet the high-energy explosions remain something of a mystery to scientists. Astronomers think they come from colliding neutron stars or from supernovae — events in which stars run out of fuel, give in to their own gravity, and collapse into black holes.
“Gamma-ray bursts are the most powerful explosions known in the universe and typically release more energy in just a few seconds than our sun during its entire lifetime,” gamma-ray scientist David Berge said in the release. “They can shine through almost the entire visible universe.”
After the brief, intense eruptions of gamma rays, hours or days of afterglow follow.
Telescopes have observed low-energy rays that come from the initial explosion and the afterglow.
“Much of what we’ve learned about GRBs [gamma-ray bursts] over the past couple of decades has come from observing their afterglows at lower energies,” NASA scientist Elizabeth Hays said in a release.
But scientists had never caught the ultra-high-energy light until these two recent observations.
On Jan. 14, 2019, two NASA satellites detected an explosions in a galaxy over 4 billion light-years away. Within 22 seconds, these space telescopes — the Neil Gehrels Swift Observatory and the Fermi Gamma-ray Space Telescope — beamed the coordinates of the burst to astronomers all over Earth.
Within 27 seconds of receiving the coordinates, astronomers in the Canary Islands turned two Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes toward that exact point in the sky.
On January 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) observatory in the Canary Islands captured the highest-energy light ever recorded from a gamma-ray burst. This illustration of that event also shows NASA’s Fermi and Swift spacecraft (top left and right, respectively).
The photons flooded those telescopes for the next 20 minutes, leading to new revelations about some of the most elusive properties of gamma-ray bursts.
“It turns out we were missing approximately half of their energy budget until now,” Konstancja Satalecka, a scientist who coordinates MAGIC’s searches for gamma-ray bursts, said in the release. “Our measurements show that the energy released in very-high-energy gamma-rays is comparable to the amount radiated at all lower energies taken together. That is remarkable.”
The large central H.E.S.S. telescope array in Namibia detected the light from a gamma-ray burst on July 20, 2018.
(MPIK / Christian Föhr)
Ultra-high-energy light came in the afterglow, not the explosion itself
The photons detected from a gamma-ray burst six months earlier, in July 2018, weren’t as energetic or as numerous as those from the January explosion.
But the earlier detection was still notable because the flow of high-energy light came 10 hours after the initial explosion. The light lasted for another two hours — deep into the afterglow phase.
In their paper, the researchers suggested that electrons may have scattered the photons, increasing the photons’ energy. Another paper about the January observations suggested the same thing.
Scientists had long suspected that this scattering was one way gamma-ray bursts could produce so much ultra-high-energy light in the afterglow phase. The observations of these two bursts confirmed that for the first time.
Scientists expect to learn more as they turn telescopes toward more gamma-ray bursts like these in the future.
“Thanks to these new ground-based detections, we’re seeing the gamma rays from gamma-ray bursts in a whole new way,” Hays said.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
There’s no hiding from a SPICE enabled bomb, it will find you in the dark and chase you on the battlefield. The kit is highly precise in that it combines GPS and EO technology. The GPS side enables the bomb to engage camouflaged or hidden targets in all weather conditions by inputting coordinates. On the other hand, the EO side provides the flexibility of remote control guidance to engage relocatable targets.
With 12 control surfaces on three groups (fore, mid-body and tail), the kit provides a glide range of about 60 kilometers (approx. 37 miles), turning any bomb into a true fire-and-forget weapon. With this much distance between the target, the striking aircraft is safe from short and medium range defense systems.
Attack helicopters are a vital part of any modern military. They carry enough weapons to knock out a company of enemy tanks – or more – and also can do in infantry, support vehicles, and even other helicopters. The AH-64 Apache is one of the best in the world, but other countries have them, too.
One is Communist China, which developed the Z-19 light attack/observation helicopter. But these light choppers, while they carry anti-tank missiles, are designed to be scouts. They locate the enemy force and try to get a sense of what is protecting it. But to be a good scout requires one type of design. To carry heavy firepower, a different design is needed.
The Z-10 packs a power punch against tanks, helicopters, and other targets.
(Photo by Peng Chen)
Well, the ChiComs decided to go for a heavy attack chopper, after trying to make a copy of the French AS.365 Dauphin work (it didn’t). So, they began trying to design one, which would become the Z-10, but ultimately had to turn to the Russian firm Kamov to get it right.
The resulting helicopter is not quite at the level of the Apache. Still, it has a top speed of 186 miles per hour, a maximum range of 510 miles, and a crew of two. While the Apache has one primary anti-tank missile, the Z-10 has three: the HJ-8, the HJ-9, and the HJ-10. The Z-10 is also capable of using rockets and can also fire PL-7 air-to-air missiles.
Two views of the Z-10 attack helicopter.
(Graphic by Stingray, the Helicopter Guy)
Like the Apache, it has an internal gun. However, this chopper also offers a choice between a 23mm cannon (similar to that used on the MiG-23 Flogger and other Soviet jets), a 30mm cannon, a 14.5mm Gatling gun, or even a 40mm automatic grenade launcher.
The ChiComs have 106 of these choppers in service and another 12 on order, according to FlightGlobal.com. Pakistan is also buying this helicopter. Learn more about Communist China’s main tank-killing chopper in the video below.
Throughout history, snipers have had two basic roles: deliver long range precision direct fire and collect battlefield information. Their heritage can be traced to the Revolutionary War.
Many of America’s soldiers fighting for their independence in the late 1700s were militia, marksmen by necessity, farmers, and settlers who hunted to feed their family. At the time, their weapons were still relatively primitive, little more than basic hunting rifles, but these hunters were skilled and, according to the American Shooting Journal, while fighting the British, long-range kills were common. Without any formal guidance, these volunteers were doing exactly the same mission as snipers do today.
Snipers continued to play an integral part in battlefield operations during World War I, when trench warfare provided good hiding places for sharpshooters, World War II’s lengthy field deployments, and the Vietnam War, when sniper fire eliminated more than 1,200 enemy combatants.
Since 1945, we have recognized the sniper as an increasingly important part of modern infantry warfare. Sniper rifles and their optics have evolved into costly but effective high-tech weaponry. Although technology, as far as snipers are concerned, can never replace experience and skill.
Annual International Sniper Competition, October 2018.
(U.S. Army photos by Markeith Horace)
Infantrymen U.S. Army Staff Sgt. Micah Fulmer and Spc. Tristan Ivkov, 1st Battalion, 157th Infantry (Mountain), Colorado Army National Guard, showed off their sniper skills, taking second place at the 2018 International Sniper Competition at Fort Benning, Georgia, in October 2018.
The International Sniper Competition is also open to law enforcement agencies, and the 2018 competition featured some of the best snipers from around the globe, including the U.S. military, international militaries, and the Federal Bureau of Investigation.
The best teams face a gauntlet of rigorous physical, mental and endurance events that test the range of sniper skills, including long range marksmanship, observation, reconnaissance, and reporting abilities as well as stealth and concealment.
It is a combat-focused competition that tests a sniper team’s ability to communicate and make decisions while stressed and fatigued, to challenge comfort zones of precision marksmanship capability and training methodology, and to share information and lessons learned regarding sniper operations, tactics, techniques, and equipment.
Army Staff Sgt. Mathew Fox waits to engage a target in the live-fire stalk event during the 2012 International Sniper Competition at the U.S. Army Sniper School on Fort Benning.
(U.S. Army photo)
Ivkov suffered a knee injury prior to the National Guard match. Despite the injury, his team took first place, securing their spot in the international competition. However, concerned about how the injury may impact the team’s ability at the next level, he felt as if they shouldn’t have even been there.
“We went in with quite the train up,” Ivkov said. “Coming in with a second place medal was even a little higher than we figured on.”
The team attended an eight-week training course just before the competition took place.
In order to keep things fair, “We used schoolhouse-issued weapons so everyone was running the same gear,” Ivkov said. “The competition lasted 96 hours…we probably slept 10.”
Their targets ranged from “M9 (Pistol) targets at 5 feet to .50 caliber at a little over a mile away,” Fulmer said. “The actual shooting is just a fraction of the knowledge and discipline you have to have to be a sniper.”
The team must gauge atmospheric and wind conditions, factors that can change a bullet’s course. At some of the longer ranges, even Earth’s rotation must be taken into account. They must also move undetected through varied terrain to get into the right shooting position.
Sgt. Nicholas Irving, of 3rd Battalion, 75th Ranger Regiment, takes aim during the “Defensive Shoot” event at Wagner Range on Fort Benning, Ga., during the Ninth annual U.S. Army International Sniper Competition.
(U.S. Army photo)
Hitting the target also takes “a little bit of luck,” Fulmer said.
Fulmer served four years in the U.S. Marine Corps before joining the Colorado National Guard. Working as mentor and spotter for Ivkov, he earned the honor of top spotter at the international competition.
U.S. Army Staff Sgts. Brandon Kelley and Jonathan Roque, a team from the 75th Ranger Regiment, took first place, for the second consecutive year. Swedish Armed Forces Lance Cpls. Erik Azcarate and David Jacobsson, from the 17th Wing Air Force Rangers, finished third.
The key for any sniper is to remain “calm, cool and collected,” Fulmer said. “We’re not going to let up now; this is just the beginning.”
With ever-changing combat environments and the necessity to stay ahead of the adversary, the U.S. Army, as recently as November 2018, awarded contracts for the fielding of the M107 .50-caliber, long-range sniper rifle. These rifles will assist soldiers such as Ivkov and Fulmer continue to take the fight to the enemy.