Morale patches are patches troops wear on their uniforms designed to be a funny inside joke, applicable only to their unit or military career field. They are usually worn during deployments, but the wear of morale patches is at the discretion of the unit’s commander.
The patches often (not always) make fun of a depressing, boring or otherwise specific part of the job.
These patches have been around since the military began to wear patches. They are collected and traded by people, both military and civilians, who come across them. Some are more popular than others, but they are usually a lot of fun.
The “Morale Stops Here” patch is pretty popular and is actually repeated by units the world over. It’s really funny the first time you see it.
This is an old one, a throwback to the Air Force’s Strategic Air Command days. “To forgive is not SAC policy” is widely attributed to famed SAC commander Curtis LeMay.
For the benefit of the uninitiated, CSAR stands for Combat Search And Rescue.
Having the Kool-Aid Man as your unofficial mascot is funny enough, but making his hand the lightning-shooting gauntlet in the old SAC emblem is clever.
The JSTARS (or Joint Surveillance and Target Attack Radar System) have a descriptive patch here – as they operate out of trailers at Al-Udeid Air Base, Qatar (in the military, being deployed here is also known as “doing the Deid”).
This is a U.S. Navy patch from Vietnam. The “yacht” is a junk – a historically widespread type of ship used in China and around Southeast Asia. The Tonkin Gulf is where the Vietnam War (or more specifically, the U.S. involvement in it) really ignited.
More from Vietnam. By the end of the 1960’s, the rift between those who served in Vietnam and the perception of the war back home hit its peak.
As the Cold War intensified and the threat of nuclear war seemed more and more unavoidable, the young enlisted and officers whose role in the annihilation of Earth’s population probably felt more than a little stressed.
The tradition continued, well into Desert Storm. If you have morale patches that make others laugh or are highly prized, please post in the comments.
It leads the United States’ war against ISIS and with 75 aircraft on its deck has the ability to carry out numerous combat sorties a day. On July 3, Prime Minister Benjamin Netanyahu visited the USS George H. W. Bush docked opposite the Haifa Port and became the first sitting head of state to visit America’s largest and most lethal floating war machine.
The docking of the ship on July 1 marked the first time an aircraft carrier visited Israel in 17 years.
“The visit of the USS George H.W. Bush speaks to the enduring commitment to our shared interests and a commitment to fight against our common enemies,” Commanding Officer Capt. Will Pennington told reporters during a visit to the ship. According to a statement by the US European Command, the ship’s visit is meant “to enhance US-Israel relations as the two nations reaffirm their continued commitment to the collective security of the European and Middle East Regions.”
According to Pennington, the crew is constantly engaged in cooperation with Israel, including sharing intelligence.
“There is a tremendous network of shared intelligence. As you are aware the airspace in the region is very, very, busy with lots of different actors so the need to deconflict that and make sure that everyone understands their missions is very important,” he said.
Visiting the ship with US Ambassador to Israel David Friedman, Netanyahu recalled his visit to another aircraft carrier 20 years ago.
“So much has changed since the first time I visited… our ties have gotten stronger and deeper,” he said. “It is a floating island of America. It is a symbol of freedom and strength and victory.”
The USS George H.W. Bush was in the region to participate in the fight against ISIS, carrying out its last operational mission on June 30. With 20-25 sorties per day, aircraft aboard the ship have carried out 1,600 sorties over both Syria and Iraq, striking targets in Mosul and in the vicinity of Raqqa on missions that can last seven to nine hours.
The targets which are directed by the coalition ground commander, are sometimes known prior to take-off and pilots have sometimes also received targets while in the air.
According to Carrier Air Wing 8 Captain James A. McCall, one of the real-time targets was the Syrian jet that was downed on June 18 in southern Raqqa province by one of the jets stationed on the aircraft carrier.
“The jet came within visual distance” McCall said, stating that US jets “warned the Syrian aircraft that they were approaching coalition friendlies. They (the Syrian regime jet) ignored the warning and even dropped bombs on the friendlies,” he said referring to the Syrian Democratic Force who are supported by the coalition.
Towards the end of its seven-month deployment, the USS George H.W. Bush arrived in Haifa after a 40 day voyage from Dubai.
While the ship will not be taking part in any joint exercises with the Israeli Navy, Israel provided security as it pulled into the Haifa Bay allowing the ship’s strike group to continue to other missions and port calls.
“We are very tightly linked with our colleagues and partners and allies from the IDF and have been for very many years,” Pennington said.
Speaking at a ceremony aboard the carrier, Admiral Michelle J. Howard, commander of the US Naval Forces Europe-Africa, stated that the visit marks “a special moment” between Israel and the United States which “has had long standing military to military engagements with Israel.”
“In this visit to Israel, the ship’s might is a metaphor for the strength of the bonds between our countries. I’d like to thank the Israeli people for hosting us and for taking care of our Sailors,” she added.
Intelligence Minister Israel Katz, who visited the ship on Sunday stated that it was “a timely show of American power projection and deterrence capability.”
“Its support for the countries fighting Islamic extremism and terror and Iran is very important, especially now when Iran is working to create facts on the ground in Syria, including a port on the Mediterranean, and Hezbollah continues to build its arsenal with more advanced and precise missiles.”
The Tupolev Tu-22 Blinder might just have been one of the least pilot-friendly aircraft ever built by the Soviet Union in the 1960s, and that’s saying something, considering that MiG fighters were notorious for their cramped quarters and poor pilot visibility. The very first supersonic bomber to enter service with the Soviet Air Force, around 311 models were produced with a number going to Iraq and Libya as part of large export deals brokered by the USSR in the 1970s. Not only did the Blinder look like something out of a space-age comic book, it seemingly functioned like one as well. I mean, at least with how its aircrew entered the aircraft. Its performance characteristics were anything but next-generation, far from what the Soviets had hoped to accomplish with such an aircraft.
The Tu-22 flew with a pilot, a navigator and a weapons officer as its full complement. Each crewmember sat in front of the other, and had to be “lifted” into the aircraft using a motorized chair. Unluckily for them, they were also firmly strapped to downward-firing K-22 ejection seats, which could not be used at altitudes below 820 feet. The runway handling dynamics of the aircraft were atrocious, leading to numerous mishaps without the Blinder even leaving the ground. But, at least it looked cool, right?
The Battle of the Coral Sea was a game-changer in terms of naval battles. Not only did it mark the first time the Allies turned the Japanese back during World War II, it was the first time ships fought without sighting each other. That means the primary weapons weren’t guns, as they had been for centuries — they were planes.
At that point in World War II, the air groups on fleet carriers usually consisted of three types of planes: fighters, dive-bombers, and torpedo planes. We’ll look at the aircraft that did most of the fighting.
Grumman F4F-3 Wildcats from USS Yorktown (CV 5) prior to World War II.
The Grumman F4F Wildcat walked a long road in becoming one of the most successful naval fighters of all time. At first, the US Navy didn’t even want the plane, opting instead to field the Brewster F2A Buffalo. By the time the war started, however, the Wildcat won out. The F4F-3 that fought at the Coral Sea packed four .50-caliber machine guns. 20 F4F-3 s were on USS Yorktown (CV 5), and 22 were on USS Lexington (CV 2).
A Mitsubishi A6M Zero takes off from the Zuikaku.
Mitsubishi A6M Zero – “Zeke”
This was Japan’s best fighter in World War II. In China, it racked up a huge kill count and went on to dominate against British, Dutch, and even American fighters over the first six months of World War II. It packed a pair of 7.7mm machine guns and two 20mm cannons. The Japanese fleet carriers Shokaku and Zuikaku each had 21 Zekes on board, and the light carrier Shoho added 12 more.
A Douglas SBD Dauntless assigned to VS-2 on USS Lexington in flight. “Lady Lex” had 36 of these planes at the Coral Sea.
Douglas SBD Dauntless
This plane became America’s most lethal ship-killer in World War II —and it did so using 1,000-pound bombs. The plane also packed two .50-caliber machine guns in the nose and a twin .30-caliber machine gun mount used by the radioman. That combination proved lethal to a number of Zekes. USS Yorktown had 38 on board, USS Lexington had 36.
An Aichi D3A Val during the attack on Pearl Harbor. The Japanese had 41 of these planes on Shokaku and Zuikaku.
Aichi D3A – “Val”
Japan’s primary dive bomber was only capable of carrying a 550-pound bomb, which left it unable to land a killing blow. Even after suffering repeated strikes, a target could still float, lingering. Still, it was capable of doing damage. Shokaku had 20 Vals on board, Zuikaku had 21 at the start of the battle.
A Douglas TBD Devastator drops a Mk 13 aerial torpedo just prior to World War II. The two American carriers at the Coral Sea had 25 of these planes.
Douglas TBD Devastator
The Douglas TBD Devastator is best known as the plane that was decimated at Midway. It could carry a single Mk 13 torpedo, but also was able to be used as a level bomber. It had a single .30-caliber machine gun in the nose, and was built for a single .30-caliber machine gun to be used by a rear gunner, who doubled as the radioman. USS Lexington had 12 planes on board, USS Yorktown had 13.
A Nakajima B5N “Kate” on Shokaku during the Battle of the Coral Sea. The Japanese carriers brought 51 of these planes to the Coral Sea.
(Imperial Japanese Navy)
Nakajima B5N – “Kate”
This was the plane that a Japanese carrier used as its ship killer. It carried a crew of three and could carry a torpedo or be used as a level bomber. Unlike the Devastator, the Kate’s mark in history can be listed in the ships it sank: USS Arizona (with a level bomb), USS Oklahoma (with torpedoes), and USS Lexington (torpedoes) were three of the most notable prior to the Battle of Midway. It had a single 7.7mm machine gun used by the radioman and some additional guns in the wings. Shokaku and Zuikaku each had 21 of these planes on board, and Shoho added nine more.
As New York faces its highest death rates so far from the coronavirus, the New York National Guard has stepped in to help collect dead bodies around New York City.
Around 150 National Guard soldiers are assisting New York City’s medical examiner in collecting bodies.
“National Guard personnel are working with members of the Medical Examiner’s Office to assist in the dignified removal of human remains when required,” the National Guard said in a statement.
“There are approximately 150 New York National Guard Soldiers and Airmen assisting with this mission,” it said. “The National Guard Soldiers are joined by 49 Soldiers assigned to the active Army’s 54th Quartermaster Company, now providing staff assistance to the NYC Office of the Chief Medical Examiner.”
New York state is experiencing its highest death rates so far from the coronavirus. Gov. Andrew Cuomo said on Thursday that the day prior, at least 799 people died in the state from the coronavirus.
NEW must read story from @pbmelendez and @MichaelDalynyc
w/ a striking photo, taken earlier this week, of the National Guard loading bodies into an Enterprise rental vanhttps://www.thedailybeast.com/nycs-coronavirus-death-toll-expected-to-surge-as-officials-include-deaths-at-home?ref=home …
Facial recognition is being widely embraced as a security tool — law enforcement and corporations alike are rolling it out to keep tabs on who’s accessing airports, stores, and smartphones.
As it turns out, the technology is fallible. Researchers with the artificial-intelligence firm Kneron announced that they were able to fool some facial-recognition systems using a printed mask depicting a different person’s face.
The researchers, who tested systems across three continents, said they fooled payment tablets run by the Chinese companies Alipay and WeChat, as well as a system at a border checkpoint in China. In Amsterdam, a printed mask fooled facial recognition at a passport-control gate at Schiphol Airport, they said.
The researchers said their findings suggested that a person who prints a lifelike mask resembling someone else could bypass security checkpoints to fly or shop on their behalf.
“Technology providers should be held accountable if they do not safeguard users to the highest standards,” Kneron CEO Albert Liu said in a statement. “There are so many companies involved that it highlights an industry-wide issue with substandard facial recognition tech.”
Some facial-recognition software proved impervious to the printed-mask test, however. The researchers said Apple’s Face ID and Huawei’s system passed; both use more sophisticated technology known as structured light imaging. Kneron said its own facial recognition software also passes the test.
Researchers said that tests at security checkpoints were carried out with the permission of security guards supervising them — suggesting that as long as humans are present to notice the mask, facial-recognition checkpoints aren’t entirely unsecured.
In the month after its mask study went viral, Kneron announced that it raised million from investors including Alibaba, Qualcomm, and Horizons Ventures.
“We are excited to continue our journey with partners like Horizons Ventures who share our passion and dedication towards our mission to enable AI on any device [and] democratize AI,” Liu told Business Insider after the fundraising was announced.
Here’s the pitch deck Kneron used to raise million.
The F-15 Eagle – an air-superiority fighter that has dominated the dogfight arena sine it was introduced into service, then later emerged as a superb multi-role fighter.
The Su-27 Flanker– Russia’s attempt to match the Eagle.
Which is the deadliest plane? To decide that, we will look at combat records, their avionics systems, their armament, as well as their performance specs to see who’d come out on top.
1. Combat Records
There’s no better way to judge a plane then how it has done in combat. Forget the specs you see on a sheet of paper, forget what it looks like. Just judge it by its record.
An F-15 Eagle departs during the mission employment phase exercise at Nellis Air Force Base, Nev., Dec. 7, 2012. (U.S. Air Force photo/Senior Airman Brett Clashman)
The F-15 has seen a lot of action. Perhaps the most important number is: “zero.” That is how many F-15s have been lost in air-to-air combat. This is an incredible feat for a plane that has been in service for 40 years and seen action in wars. In fact, the F-15 has shot down over 100 enemy planes with no losses.
The Su-27 family has seen much less action. Su-27s flown by the Ethiopian Air Force that saw combat in the 1998-2000 war with Eritrea scored at least two and as many as 10 air-to-air kills. The Flanker has also seen action over Syria, Chechnya, and Georgia, scoring one confirmed kill over Chechnya in 1994.
Advantage: F-15 Eagle
In the modern age of aerial combat, the plane’s electronics matter. Radar serves as eyes and ears, while electronic countermeasures (ECM) try to keep the other side deaf and blind.
The F-15 uses the AN/APG-63(V)3, an active electronically scanned array, or AESA, radar. This highly advanced system gives the Eagle a pair of very sharp “eyes” that locate targets up to 100 miles away and direct its radar-guided AIM-120 Advanced Medium Range Air-to-Air Missiles. The Eagle also has the AN/ALQ-135 ECM system, which is very useful against opposing radars, whether on missiles or aircraft.
The avionics suite inside an Su-27 Flanker. (Photo from Wikimedia)
The Su-27’s avionics center around the N001 Mech radar, capable of tracking bomber-sized targets at 86 miles. For a target the size of the F-15, though, the range is only 62 miles. That is a difference of 38 miles – almost two-thirds of the Mech’s range. The Flanker doesn’t have internal jammers. Instead, there is the option to use two Sorbtsiya pods.
Advantage: F-15 Eagle
The F-15 can carry up to eight air-to-air missiles. The usual load is four AIM-120 AMRAAMs and four AIM-9X Sidewinders. It also carries a M61 20mm Gatling gun with 900 rounds of ammunition. The AIM-120D now in service has a range of 99 miles, while the AIM-9X can reach out to 22 miles. The AMRAAM is a “fire and forget” missile.
The Su-27 carries six R-27 (AA-10 “Alamo” missiles), which have a range of up to 80 miles. These missiles use semi-active guidance, meaning the Flanker has to “paint” its target to guide the missile. That means flying straight and level – not the best idea in aerial combat.
The Flanker also carries up to four R-73 missiles (AA-11 “Archer”), which has a range of up to 19 miles, and has a GSh-30 30mm cannon.
Advantage: F-15 Eagle
The F-15 has a top speed of Mach 2.5, a combat radius of 1,222 miles, and can maneuver in a dogfight, pulling up to 9 Gs.
With three 600-gallon drop tanks and two 750-gallon conformal fuel tanks (Fuel And Sensor Tactical, or “FAST” packs), the F-15’s range is 3,450 miles. In short, this plane has long “legs” and it can be refueled in flight by tankers.
The Su-27 has a top speed of Mach 2.35, a range of 2,193 miles, and is capable of some amazing aerobatic feats, notably the Pugachev Cobra. Like the F-15, it can pull 9 Gs in a maneuver. The Flanker can carry drop tanks and be refueled while flying.
So, who wins? While the F-15 Eagle is an older design, its advantages — particularly avionics — put the Su-27 at a huge disadvantage. Russia has other planes in the Flanker family (the Su-35), but they are few and far between.
So, how might the engagement between four United States Air Force F-15s and four Su-27s from BadGuyLand go?
Well, the F-15s would probably detect the Su-27s first. Once in AMRAAM range, the Eagle pilots will open fire, most likely using two missiles per target. The Flankers would be obliterated.
If it got to close range, though, the engagement is likely to be a lot less one-sided. Here, the AA-11 and AIM-9 are equal, and both planes can pull 9 Gs.
The skill and training of the pilots will be decisive. In this case, we will assume that BadGuyLand’s dictator, Sleazebag Swinemolestor, hasn’t quite trained his pilots well, and some were selected for their political liability. In this mix-up, the Eagles shoot down three Flankers for the loss of one fighter – the first F-15 lost in air-to-air combat.
Either way, though, it is a safe bet that the F-15 still comes out on top.
The Pentagon’s research arm is now demonstrating an entirely new level of aircraft autonomy which blends the problem-solving ability of the human mind with computerized robotic functions.
The Defense Advance Research Project Agency, or DARPA, program is called Aircrew Labor in Cockpit Automation System, or ALIAS.
A key concept behind ALIAS involves a recognition that while human cognition is uniquely suited to problem-solving and things like rapid reactions to fast-changing circumstances, there are many procedural tasks which can be better performed by computers, developers explained.
ALIAS uses a software backbone designed with open interfaces along with a pilot-operated touchpad and speech recognition software. Pilots can use a touch screen or voice command to direct the aircraft to perform functions autonomously.
For instance, various check-list procedures and safety protocols such as engine status, altitude gauges, lights, switches and levers, can be more rapidly, safely and efficiently performed autonomously by computers.
“This involves the routine tasks that humans need to do but at times find mundane and boring. The ALIAS system is designed to be able to take out those dull mission requirements such as check lists and monitoring while providing a system status to the pilot. The pilot can concentrate on the broader mission at hand,” Mark Cherry, President and CEO of Aurora Flight Sciences, told Defense Systems in an interview.
The aircraft is able to perform a wide range of functions, such as activating emergency procedures, pitching, rolling, monitoring engine check lights, flying autonomously to pre-determined locations or “waypoints,” maneuvering and possibly employing sensors – without every move needing human intervention.
Developers explain that ALIAS, which has already been demonstrated by DARPA industry partners Lockheed Martin and Aurora Flight Sciences, can be integrated into a wide range of aircraft such as B-52s or large civilian planes.
Initial configurations of ALIAS include small aircraft such as a Cessna 208 Caravan, Diamond DA42 and Bell UH-1 helicopters, Cherry explained. The ALIAS system is able learn and operate on both single engine and dual-engine aircraft.
Both Lockheed and Aurora Flight Sciences have demonstrated ALIAS; DARPA now plans to conduct a Phase III down-select where one of the vendors will be chosen to continue development of the project.
As algorithms progress to expand into greater “artificial intelligence” functions, computers with increasingly networked and rapid processors are able to organize, gather, distill and present information by themselves. This allows for greater human-machine interface, reducing what is referred to as the “cognitive burden” upon pilots.
There are some existing sensors, navigational systems and so-called “fly-by-wire” technologies which enable an aircraft to perform certain functions by itself. ALIAS, however, takes autonomy and human-machine interface to an entirely new level by substantially advancing levels of independent computer activity.
In fact, human-machine interface is a key element of the Army-led Future Vertical Lift next-generation helicopter program planning to field a much more capable, advanced aircraft sometime in the 2030s.
It is certainly conceivable that a technology such as ALIAS could prove quite pertinent to these efforts; a Joint Multi-Role Technology Demonstration Army ST program is already underway as a developmental step toward engineering this future helicopter. The intention of the FVL requirement, much like ALIAS, is to lessen the cognitive burden upon pilots, allowing them to focus upon and prioritize high-priority missions.
The human brain therefore functions in the role of command and control, directing the automated system to then perform tasks on its own, Cherry said.
“Help reduce pilot workload and increase safety in future platforms,” Cherry said.
Aircraft throttle, actuation systems and yokes are all among airplane functions able to be automated by ALIAS.
“It uses beyond line of sight communication which is highly autonomous but still flies like a predator or a reaper,” John Langford, CEO of Aurora Flight Sciences, told Defense Systems in an interview.
Due to its technological promise and success thus far, ALIAS was given an innovation award recently at the GCN Dig IT awards.
A VA Million Veteran Program study identified locations in the human genome related to the risk of re-experiencing traumatic memories, the most distinctive symptom of posttraumatic stress disorder.
Researchers from the VA Connecticut Healthcare System, Yale University School of Medicine, the VA San Diego Healthcare System, and the University of California San Diego collaborated with colleagues on the study of more than 165,000 veterans.
The results appeared in the journal Nature Neuroscience.
PTSD is usually considered to have three main clusters of symptoms: re-experiencing, avoidance, and hyperarousal. Avoidance and hyperarousal are common to other anxiety conditions as well, but re-experiencing is largely unique to PTSD. Re-experiencing refers to intrusive thoughts, nightmares, and flashbacks.
The researchers compared the genomes of 146,660 white veterans and 19,983 black veterans who had volunteered for MVP.
The study revealed eight separate regions in the genome associated with re-experiencing symptoms among the white veterans. It did not show any significant regions for black veterans, considered separately as a group, because there were far fewer black study participants available, making it harder to draw conclusions.
(Department of Veterans Affairs)
Results were replicated using a sample from the UK Biobank.
The results showed genetic overlap between PTSD and other conditions. For example, two genes previously linked to schizophrenia and bipolar disorder were implicated. This could mean that the hallucinations experienced in schizophrenia may share common biochemical pathways with the nightmares and flashbacks of people with PTSD.
The study also revealed genetic links to hypertension. It is possible that hypertension drugs that affect these same genes could be effective for treating PTSD.
Taken together, the results “provide new insights into the biology of PTSD,” say the researchers. The findings have implications for understanding PTSD risk factors, as well as identifying new drug targets.
This article originally appeared on VAntage Point. Follow @DeptVetAffairs on Twitter.
Twenty-six bones, 33 joints, and over 100 ligaments. That’s not your body we’re talking about — that’s just your feet. It’s an awful lot of moving parts to pack into a foot-long space. Throw on 180 or so pounds on top of that, and then consider that if you exercise, every running step you take multiplies the impact of your weight threefold, and you can see the kind of pressure your delicate foot structure is under day in and day out.
The perks of strengthening your feet are multifaceted. First, strong feet give your legs a durable base to push off from when you’re running, cycling, squatting, or doing whatever it is you like to do to stay fit. Second, strong feet are more resistant to foot pain, one of the most common sources of bodily aches right up there with back pain. Tight arches, sore heels, plantar fasciitis — all of these complaints are met with a physical therapist’s advice to build foot strength. By pre-emptively exercising your digits, you might avoid the pain altogether.
Make sense? Great. Here are 7 exercises to get you started. The whole series takes about 20 minutes and you should do it several times a week.
1. Towel scrunch
Sit in a chair with bare feet. Place a towel on the floor, about two feet in front on the chair. Using the toes on your right foot, extend your digits across the towel, then contract them, scrunching your toes together and pulling the fabric close to your chair. Release the towel and extend your toes against, grabbing more fabric and you scrunch them together. Continue reaching and scrunching until you have created a balled-up towel in front of your chair. Do three times.
Sit in a chair, feet flat on the floor in front of you. Place one hand on either knee. Press down with your arms while simultaneously lifting your heels off the floor, resisting the pressure and rising onto your toes. Release. Do 3 sets of 10 reps.
3. Pick-up game
Take the pieces to your favorite board game like Monopoly (chess and checkers work, too), and scatter them on the floor. Sit in a chair in the middle of the mess. Using only your toes, grab, lift, and carry each piece to a nearby bucket where they will be stored. Continue until floor is clean. Bring the kids in on this one — it’s a family favorite.
Tie an exercise band around the leg of a couch or bed. Sit on the floor, about two feet from the bed, and tie the other end of the band around your midfoot so that there is pressure on the band. Begin to flex and point your foot, keeping resistance on the band the whole time. Do 20 reps on one foot, then switch sides and repeat. Do three full sets.
5. Calf raises
The same exercise that tones your calves also builds strength and stability in your ankles. You can do these exercises with both feet at once, or one at a time. Stand facing a wall, about a foot away. Placing hands on the wall for balance as needed, rise up onto your toes and back down, making sure you roll up to the very top each time. Do 3 sets of 12 reps.
Stand in the middle of a room, feet shoulder-width apart. Shift your weight to the right side and lift your left foot off the floor 6 inches. Close your eyes. Attempt to count to 30 (30 seconds) while balancing with eyes closed. Repeat on opposite side.
7. Alphabet game
Stand next to a wall, feet shoulder-width apart. Shift weight to the right side and lift your left foot in front of you, knee bent. Trying to maintain your balance (use the wall for support if necessary), begin to trace the letters of the alphabet in the air with your left foot. Work from A to Z, then switch sides and repeat.
This article originally appeared on Fatherly. Follow @FatherlyHQ on Twitter.
Fleet Readiness Center East is celebrating an achievement, and likely first, in using 3D printing and polymers as a supply solution to repair components for the H-53E.
Research and Engineering Group engineers used a polymer additive manufacturing process — fused deposition modeling — to produce replacement blade inspection method vents (BIM vents) for the aircraft’s main rotor blades.
“I believe this is the first time a polymer AM process has been used to build a flight critical repair component in (Naval Air Systems Command),” said Douglas Greenwood, AM Lead for the Advanced Technology Integrated Product Team. “We don’t usually, if ever, see ‘polymer AM’ and ‘flight critical’ in the same sentence.”
According to Joshua Peedin, senior engineer for H-53 Rotor Systems, artisans in Blade Shop 94304 identified integral damage in the parts during the repair process in 2016. It was a discovery of cracks in the foam beneath the root fairing that pointed to the damage in the vents.
The BIM vents work as part of the indication system to alert pilots to pressure loss in the blades. The BIM vents are critical application items, which means they have a critical function for a major component; not critical in terms of safety of flight.
Peedin said that unavailable parts led him in the direction of the solution. “I contacted our logisticians and (the OEM) to see if we could buy any replacements,” he said. “Neither had any available, so I checked the technical drawings to see if we could manufacture our own replacements.” He said making composite molded replacements were considered, but the composite material was too rigid to meet the required specifications.
Aircraft Mechanical Parts Repairer Todd Bridgers applies a gel viscosity instant adhesive to a blade inspection method (BIM) vent — produced at Fleet Readiness Center East — before applying it to an H-53 blade.
Peedin said Materials Engineers Rob Thompson and Andrea Boxell, from the Polymers and Composites Branch, pointed out FRC East’s capability of 3D printing the part using a material that is chemically similar to the original material — a high-performance, thermoplastic polyetherimide. He also got the help of FRC East Digital Data Center members Justin Reynolds and Todd Spurgeon, AM subject matter experts, to redesign the BIM vents to ensure design compatibility with FRC East’s 3D printers.
“We had many meetings throughout the process to ensure everyone was in agreement to move forward,” said Peedin.
The prototype repair parts were tested under pressure and heat to ensure the repair could withstand in-service conditions and future blade repairs. The local engineers developed, documented, reviewed, and approved the repair procedure through AIR-4.3 Air Vehicle Engineering. The repair was first successfully demonstrated on a scrap main rotor blade asset. The most recent BIM vent repair was the second performed on a production main rotor blade asset using the AM parts.
Greenwood said the accomplishment is also noteworthy, as it demonstrates the flexibility of AM processes. He said FRC East primarily uses the AM printers to make sheet metal form blocks, prototype parts, visual aids, support equipment and many other kinds of parts to support FRC East production.
“All of those parts are built using materials different from the BIM vent parts and none of them are intended for use in flight,” said Greenwood. “Nevertheless, we are using the same printers with a different material to make the BIM vent repair parts.”
Greenwood added, the BIM vent parts mark a new milestone for FRC East. “This is an even bigger achievement for FRC East,” he said. “Using our printers to make polymer AM repair parts on H-53E main rotor blades that will enter the supply system and be used by the fleet.”
The accomplishment offers benefits in the way of cost avoidance, production, and aircraft readiness.
Peedin said the estimated cost to make the type of repair to blades through fused disposition modeling is about ,000 per blade. The pre-existing alternative to the fused deposition modeling repair was to pay the OEM to overhaul the main rotor blade for about 0,000 per blade; a 5,000 savings per blade.
Peedin said, FRC East is now able to keep a steady flow of main rotor blade repair work in the blade shop. “This will lead to a reduction of backordered repairs and ultimately contribute to improvements in the H-53 readiness posture,” he said.
It’s no secret that this year is super strange for parents. Still reeling from months in quarantine, working from home and homeschooling, parents everywhere are now staring down the barrel of summer vacations with far fewer options than they had in previous years. Parents are navigating uncharted territory, and there’s no doubt it’s putting their parenting skills, their patience, their sanity to the test. But here’s the thing, you’re not alone, parents. We’re all in this together. All you can do is take it one day at a time, power through and find a way to cope. Someday this will all be a distant memory. In the meantime, they say laughter is good medicine, so here are a few parenting memes that will make you feel seen and perhaps LOL just a little. Enjoy!