24 avril 2020 | International, Aérospatial

The Pentagon has cut the number of serious F-35 technical flaws in half

By:

WASHINGTON — The U.S. Defense Department is slowly but surely whittling down the number of F-35 technical problems, with the fighter jet program's most serious issues decreasing from 13 to seven over the past year.

In June 2019, Defense News published an investigation delving into the details of 13 previously unreported category 1 deficiencies — the designation given to major flaws that impact safety or mission effectiveness.

Following the report, five of those 13 category 1 problems have been “closed,” meaning they were eliminated or sufficiently corrected. Five were downgraded to a lower level of deficiency after actions were taken to help mitigate negative effects, and three issues remain open and unsolved, according to the F-35 program executive office.

Four additional CAT 1 problems have also since been added to the list, raising the total CAT 1 deficiencies to seven. The program office declined to provide additional details about those issues for classification reasons, but stated that software updates should allow all of them to be closed by the end of 2020.

“The F-35 Lightning II Joint Program Office is keenly aware of these existing F-35-related category 1 deficiencies and is focused on developing and implementing solutions for these issues as quickly as possible,” the program office said in response to questions from Defense News. “F-35 operator safety is the F-35 JPO's highest priority.”

In a statement to Defense News, F-35 manufacturer Lockheed Martin confirmed the number of open category 1 deficiencies. However, the company declined to provide further information about the path to fix current issues or how earlier issues had been ameliorated.

“We are actively addressing the deficiencies and expect all to be downgraded or closed this year,” the company said.

While the overall reduction in deficiencies is a promising trend, it is also important to track how problems are solved and how quickly fixes are pushed to the rest of the fleet, said Dan Grazier, an analyst with the independent watchdog group Project on Government Oversight.

“I'm not surprised that they are continuing to find issues. This is why we are supposed to be testing weapon systems before we buy a whole bunch of them. I am a little surprised that we are finding CAT 1 deficiencies at this point during operational testing,” Grazier said.

“I think that speaks to the level of complexity with this program that it's taken us this long to get to this point, and even after all the testing that has been done and the time and money that has gone into this that we're still finding category 1 issues," he added. "It shows that the program wasn't born in the right place. It was way too ambitious from the very beginning.”

Aside from four classified problems, there remain three open category 1 deficiencies in need of a fix. There are myriad reasons for that, the program office stated.

“Reasons for delayed issue closure vary according to the complexity of the solution and the availability of test assets needed to verify the solution,” the JPO said. “The U.S. services fund the F-35 program to address a prioritized set of DRs [deficiency reports], while at the same time, develop new capabilities. It is likely that some low-priority DRs will never be resolved because of their minor impact on F-35 fleet operations does not justify the cost of resolution."

The F-35 program office provided some details on the path forward for resolving these technical flaws, but noted that many details regarding those plans remain classified:

Spikes in the F-35 cockpit's cabin pressure have been known to cause barotrauma, or extreme ear and sinus pain.

This problem was documented when two Air Force pilots, flying older versions of the F-35A conventional-takeoff-and-landing model, experienced ear and sinus pain that they described as “excruciating, causing loss of in-flight situational awareness, with effects lasting for months,” according to documents obtained by Defense News. The physiological event is known by the medical term barotrauma.

The F-35 Joint Program Office believes barotrauma in the jet is caused when sensors on the outer mold line of the aircraft detect “rapidly changing static pressures” that, in turn, drive very quick changes of the cockpit pressure regulator valve.

Lockheed Martin has tested a fix that proved to be successful in a laboratory setting, Lockheed program head Greg Ulmer said last year.

But flight testing of that improvement has not occurred, slowing the pace of a solution. The F-35 program office now says flight testing of a new cockpit pressure regulation system is planned for mid-2020. If all goes well, the deficiency should be completely eliminated in 2021.

On nights with little starlight, the night vision camera sometimes displays green striations that make it difficult for all F-35 variants to see the horizon or to land on ships.

On nights where there is little ambient light, horizontal green lines sometimes appear on the night vision camera feed, obscuring the horizon and making landing on a ship more dangerous.

The problem is different than the notorious “green glow” issue, caused when the F-35 helmet-mounted display's LED lights produce a greenish luminescence that inhibits a pilot's ability to land on an aircraft carrier on nights with very little light.

At one point, both Lockheed and the government's program office believed both problems could be solved by the F-35 Generation III helmet that the U.S. military began fielding last year.

Although the program office no longer considers the “green glow” problem a deficiency, it appears that the new helmet did not completely solve the night vision camera issue. The program office told Defense News that it intends to develop software improvements and test them in flight later this year, but the deficiency will not be considered “closed” until at least 2021.

The sea search mode of the F-35's radar only illuminates a small slice of the sea's surface.

Unlike the other problems, which are the result of the contractor not meeting technical specifications or the jet not working as planned, this deficiency is on the books even though the jet's Northrop Grumman-made AN/APG-81 active electronically scanned array radar fulfills its requirements.

Currently, the radar can only illuminate what is directly in front of it when in sea search mode. That performance is not good enough for the Navy, which wants to be able to search a wider area than is currently possible.

Although this problem can be fixed with software modifications and an upgrade to the radar's processing power, it will continue to be on the books for some time. According to the program office, “[the] U.S. services agreed to plan for an improved radar mode, which will require the Technology Refresh-1 avionics update, for software release in [calendar year] 2024.”

‘A line in the sand'

Although Defense Department and military leaders have criticized the F-35 program for high operations and sustainment costs, the operational community has rallied around the performance of the jet, praising its advanced computing capability that allows the aircraft to mesh together data from different sensors and provide a more complete picture of enemy threats.

Brig. Gen. David Abba, who leads the Air Force's F-35 integration office, said in March that he was comfortable with the path forward to correct open deficiencies, downplaying the impact of those issues on daily operations.

“Is it important to hold folks' feet to the fire and make sure that we're delivering on the capabilities that we need? Yes,” he said. But, he added, it's also difficult to balance the need to meet a stated technical requirement against the reality of a fielded technology that may already be performing well in daily operations.

“That's the crux of the acquisition and the delivery problem that we have,” Abba said. “When we say ‘I need this to work exactly like this,' I'm drawing a line in the sand. If I'm a half degree on one side of that line versus the other, is it really that different? That's where the art comes in.”

“We've got to kind of get over ourselves a little bit and acknowledge that we never field perfect weapon systems,” he continued. “I don't want to diminish the fact that it's critical that we get after open DRs, but every weapon system in the United States Air Force — and frankly around the planet — has open deficiencies. What matters is the severity of those deficiencies and ensuring that we have a robust process between government and industry to triage those and deal with them appropriately.”

Aaron Mehta and David B. Larter contributed to this report.

https://www.defensenews.com/smr/hidden-troubles-f35/2020/04/24/the-pentagon-has-cut-the-number-of-serious-f-35-technical-flaws-in-half/

Sur le même sujet

  • SPECTO Aerospace wins NATO contract

    3 juin 2020 | International, Aérospatial

    SPECTO Aerospace wins NATO contract

    June 2, 2020 - The NATO Support and Procurement Agency (NSPA) awards SPECTO Aerospace a three years contract for the provision of rotor blade repair services to support NATO nations' AH-64 helicopter fleets. SPECTO, located at the Royal Netherlands Air Force (RNLAF) base in Woensdrecht The Netherlands, is specialized in the maintenance and repair of civil and military helicopter rotor blades. The military Part 145 approval for the RNLAF includes the NH-90, AS-532, CH-47 and AH-64 helicopter types. Furthermore Boeing authorized SPECTO for rotor blade maintenance of the Chinook and Apache helicopters. The workshop of SPECTO at the RNLAF base is fully equipped for the overhaul of rotor blades, including painting, static balancing and release to service (EASA/FAA Form1 / Def Form 1). About NATO Support and Procurement Agency (NSPA): The NATO Support and Procurement Agency (NSPA) brings together in a single organization, acquisition, logistic, medical and infrastructural capabilities, operational and systems support and services to the NATO nations, NATO Military Authorities and partner nations. As NATO's primary enabler, the Agency's mission is to provide effective and cost-efficient multinational solutions to its stakeholders. About SPECTO: SPECTO Aerospace specializes in composite and sheet metal repair services for primary and secondary Fixed & Rotary wing aircraft components. The company has two state-of-the-art maintenance facilities, focusing on Rotor Blades for helicopters at Woensdrecht Air Base and Radomes, Flight Control Surfaces, Nacelle- and Structure parts for fixed wing aircraft at Amsterdam Lelystad Airport. SPECTO is an EASA/FAA/TCCA/MAA-Part 145 repair station and certified according to AS9100, AS9110 and ISO9001. View source version on SPECTO Aerospace: https://www.spectoaerospace.com/specto-aerospace-wins-nato-contract/l72c3

  • Contract Awards by US Department of Defense - February 01, 2021

    2 février 2021 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

    Contract Awards by US Department of Defense - February 01, 2021

    NAVY Raytheon Technologies Corp., Pratt and Whitney, Pratt and Whitney Military Engines, East Hartford, Connecticut, is awarded a $290,704,534 cost-plus-incentive-fee, fixed-price incentive (firm target) contract. This contract provides material and support equipment for depot maintenance facilities, program administrative labor for non-recurring sustainment activities, mockup engines and modules for test cells, as well as supplies, services, and planning for depot activations in support of the F-35 Lightning II Program Lot 13 propulsion system for the Navy, Marine Corps, Air Force, non-Department of Defense (DOD) participants and Foreign Military Sales (FMS) customers. Work will be performed in Oklahoma City, Oklahoma (30%); East Hartford, Connecticut (22%); Cherry Point, North Carolina (10%); Indianapolis, Indiana (6.75%); Windsor, Connecticut (3.25%); Yuma, Arizona (1.25%); Norfolk, United Kingdom (1%); Leeuwarden, Netherlands (1%); various locations within the continental U.S. (3.75%); and various locations outside the continental U.S. (21%), and is expected to be completed in January 2024. Fiscal 2020 aircraft procurement (Navy) funds in the amount of $89,468,714; fiscal 2020 aircraft procurement (Air Force) funds in the amount of $84,152,318; non-DOD participant funds in the amount of $45,225,342; and FMS funds in the amount of $15,886,074, will be obligated at the time of award, none of which will expire at the end of the current fiscal year. This contract was not competitively procured pursuant to 10 U.S. Code 2304(c)(1). The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity (N00019-21-C-0006). Crowley Government Services Inc., Jacksonville, Florida (N62387-15-C-2505) is awarded a $25,484,291 modification under a previously awarded firm-fixed-price contract to exercise a six month option period (P00128) for the operation and maintenance of five Navy ocean surveillance ships USNS Victorious (T-AGOS 19); USNS Able (T-AGOS 20); USNS Effective (T-AGOS 21); USNS Loyal (T-AGOS 22); and USNS Impeccable (T-AGOS 23), and missile range instrumentation ships USNS Invincible (T-AGM 24); and USNS Howard Lorenzen (T-AGM 25). This modification provides for the exercises of a six-month option period to the bridge contract that was awarded on July 22, 2020. Work will be performed at sea, world-wide beginning Feb. 1, 2021, and is expected to be completed by July 31, 2021. Working capital funds (Navy) in the amount of $25,484,291 are obligated for fiscal 2021 and will not expire at the end of the fiscal year. This bridge was not competitively procured and was prepared in accordance with Federal Acquisition Regulation 6.302-1 and 10 U.S. Code § 2304(c)(1). The Military Sealift Command, Norfolk, Virginia, is the contracting activity. Lockheed Martin, Mission Systems and Training, Baltimore, Maryland, is awarded a $14,184,813 cost-plus award-fee order N62786-21-F-0004, against previously awarded basic ordering agreement N00024-19-G-2313 to provide engineering and management services for LCS-21 post shakedown availability. Work will be performed in Mayport, Florida (37%); Moorestown, New Jersey (29%); Virginia Beach, Virginia (18%); Washington, D.C. (15%); and Baltimore, Maryland (1%), and is expected to be completed by July 2022. Fiscal 2015 shipbuilding and conversion (Navy) $5,339,694 funding will be obligated at time of award and will not expire at the end of the current fiscal year. The Supervisor of Shipbuilding, Conversion, and Repair, Bath, Maine, is the contracting activity. ARMY Ellume USA LLC, Valencia, California, was awarded a $250,000,000 firm-fixed-price contract to procure reliable home use testing without prescription requirements to meet the demand to respond to the ongoing COVID-19 pandemic. Bids were solicited via the internet with one received. Work will be performed in Valencia, California, with an estimated completion date of Feb. 1, 2022. Fiscal 2021 special funds in the amount of $250,000,000 were obligated at the time of the award. U.S. Army Contracting Command, Aberdeen Proving Ground, Maryland, is the contracting activity (W911NF-21-9-0003). NIKA Technologies,* Rockville, Maryland (W912DY-21-D-0017); Health Facilities Solutions, San Antonio, Texas (W912DY-21-D-0021); Polu Kai Tidewater,* Falls Church, Virginia (W912DY-21-D-0020); Vali Cooper International, Covington, Louisiana (W912DY-21-D-0018); VW International Inc., Alexandria, Virginia (W912DY-20-D-0019); and The Outfit Inc., New Braunfels, Texas (W912DY-21-D-0016), will compete for each order of the $50,000,000 firm-fixed-price contract to provide medical project support services, facility support services, quantity verification and analysis services, project development support services and commissioning support services. Bids were solicited via the internet with 15 received. Work locations and funding will be determined with each order, with an estimated completion date of Jan. 31, 2026. U.S. Army Corps of Engineers, Huntsville, Alabama, is the contracting activity. AIR FORCE Rolls-Royce Corp., Indianapolis, Indiana, has been awarded a $96,932,957 delivery order (FA8504-21-F-0022) to contract FA8504-17-D-0002 for C-130J propulsion long-term sustainment. This order provides funding for Option IV. Work will be performed at Robins Air Force Base, Georgia, and is expected to be completed Jan. 31, 2022. Fiscal 2021 Special Operations Command operation and maintenance funds in the amount of $7,109,327; fiscal 2021 Air National Guard operation and maintenance funds in the amount of $22,126,544; fiscal 2021 Air Force Reserve operations and maintenance funds in the amount of $12,187,542; fiscal 2021 Air Force operation and maintenance funds in the amount of $54,486,354; and fiscal 2021 Special Operations Command research, development, test and evaluation funds in the amount of $1,023,191 are being obligated at the time of award. Total cumulative face value of the contract is $66,684,503. Air Force Life Cycle Management Center, Robins AFB, Georgia, is the contracting activity. Innovative Scientific Solutions Inc., Dayton, Ohio, has been awarded a not-to-exceed $44,195,532 indefinite-delivery/indefinite-quantity contract for Technology for Sustained Supersonic Combustion (TSSC). This is for the Technical Area 2 portion of TSSC. The mission of this TSSC effort focuses on development and evaluation of advanced aero propulsion systems and components, airframe structures, internal/external aerodynamics including integration into air vehicles, weapons and launch components with an emphasis on decreasing weigh and evaluating the effect of engine scale to determine operability, durability and performance. Work will be performed at Wright-Patterson Air Force Base, Ohio, and is expected to be completed February 2028. This award is the result of a competitive acquisition and four offers were received. The first task order will be incrementally funded with fiscal 2020 research, development, test and evaluation funds in the amount of $20,000 at time of award. Air Force Research Laboratory, Wright-Patterson AFB, Ohio, is the contracting activity (FA8650-21-D-2401). Cyber Systems and Services Solutions, Bellevue, Nebraska, has been awarded a $17,765,741 firm-fixed-price and cost-plus-fixed-fee modification (P0010) to contract FA8773-18-D-0002 to exercise Option Three for defensive cyber realization, integration and operational support services. Work will be performed at Joint Base San Antonio (JBSA)-Lackland, Texas, and is expected to be completed Feb. 28, 2022. This modification is the result of a competitive acquisition and seven offers were received. Fiscal 2021 operation and maintenance funds in the amount of $8,764,731 are being obligated at the time of award. The 38th Contracting Squadron, JBSA-Lackland, Texas, is the contracting activity. University of Toledo, Toledo, Ohio, has been awarded a $12,500,000 cost-reimbursement contract for “Photovoltaic Sheets for High-Specific-Power Space-Based Energy Harvesting (PVS-EH)”. This contract is to provide, develop and demonstrate the concept of PV “sheets” (PVS), consisting of modular, interconnect able, high-efficiency PV power sources fabricated on low-weight flexible substrates using scalable processing. Under this program, the contractor will further the effort to study and develop advanced materials, interfaces and electrical contacts for high efficiency and high specific power tandem thin film photovoltaic technologies to achieve lightweight solar sheet technologies that enable specific powers to exceed 1000 W/kg onboard spacecraft self- sensing, attribution and autonomy. Work will be performed in Toledo, Ohio, and is expected to be completed February 2026. Fiscal 2020 research, development, test and evaluation funds in the amount of $3,000,000 are being obligated at the time of award. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico, is the contracting activity (FA9453-21-C-0056). Northrop Grumman Systems Corp., Herndon, Virginia, has been awarded a $7,763,422 firm-fixed-price task order under the ground subsystems sustainment contract (FA8214-15-D-0001) for the Minuteman III Launch Control Center Block Upgrade production for the exercise of Option Year One of Malmstrom Wing I. Work will be performed in Ogden, Utah, and is expected to be completed Aug. 15, 2022. Fiscal 2021 missile procurement funds in the full amount are being obligated at the time of award. Total value of the task order after exercise of the previously mentioned option is $26,428,083. Air Force Nuclear Weapons Center, Hill Air Force Base, Utah, is the contracting activity (FA8204-20-F-0071). CORRECTION: The contract modification (P00014) awarded to Gulfstream Aerospace Corp., Savannah, Georgia, Jan. 27, 2021, had an incorrect obligation amount. The operation and maintenance funds being obligated at the time of award should be $50,418,022, not $44,482,293 (FA8106-18-D-0002). DEFENSE LOGISTICS AGENCY Stryker Corp., Portage, Michigan, has been awarded a maximum $89,644,767 fixed-price with economic-price-adjustment, indefinite-delivery/indefinite-quantity contract for cranial and maxillofacial procedural packages and ancillary items. This was a sole-source acquisition using justification 10 U.S .Code 2304 (c)(1), as stated in Federal Acquisition Regulation 6.302-1. This is a one-year contract with four one-year option periods. Location of performance is Michigan, with a Jan. 31, 2022, ordering period end date. Using military services are Army, Navy and Air Force. Type of appropriation is fiscal 2021 through 2022 defense working capital funds. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania (SPE2DE-21-D-0011). Exxel Outdoors LLC,* Broomfield, Colorado, has been awarded a maximum $55,760,612 firm-fixed-priced, indefinite-delivery/definite-quantity contract for three-season sleep systems and components. This was a competitive acquisition with three responses received. This is a one-year base contract with four one-year option periods. Location of performance is Colorado, with a Jan. 28, 2022, ordering period end date. Using military services are Army, Navy, Air Force and Marine Corps. Type of appropriation is fiscal 2021 through 2022 defense working capital funds. The contracting activity is the Defense Logistics Agency, Troop Support, Philadelphia, Pennsylvania (SPE1C1-21-D-1439). SNC Manufacturing LLC,** Orocovis, Puerto Rico, has been awarded a maximum $41,007,805 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for trousers. This was a competitive acquisition with eight responses received. This is a one-year contract with four one-year option periods. Location of performance is Puerto Rico, with a Jan. 31, 2022, ordering period end date. Using military service is Army. Type of appropriation is fiscal 2021 through 2022 defense working capital funds. The contracting activity is the Defense Logistics Agency, Troop Support, Philadelphia, Pennsylvania (SPE1C1-21-D-1413). *Small business **Small disadvantaged business https://www.defense.gov/Newsroom/Contracts/Contract/Article/2489417/source/GovDelivery/

  • This unit’s going airborne with the Army’s newest sniper rifle

    3 juillet 2019 | International, Terrestre

    This unit’s going airborne with the Army’s newest sniper rifle

    By: Todd South Soldiers with the 82nd Airborne recently conducted tests of the Army's newest offering for a compact sniper rifle — and they liked it. Earlier this month snipers with the 82nd at Fort Bragg, North Carolina, put the Compact Semi-Automatic Sniper System through airborne infiltration test trials. One of the Operational Test Command's Airborne and Special Operations Test Directorate NCOs, Sgt. 1st Class Ross Martin, said in a release that the compact nature of the rifle is appealing to airborne forces who have to maneuver their equipment in cramped planes for jumps. Typically, the longer-barrel standard rifles can be cumbersome. “Current sniper systems are equipped with 20-inch barrels, sound suppression systems and full-length stocks that provide accuracy and a stable firing platform required of any precision rifle,” said David Parris, a CSASS trainer with U.S. Army Tank-automotive and Armaments Command's Soldier Weapons Support. As the Army shifts focus to dense urban environments the equipment, such as the sniper rifle, follow suit. “The CSASS is smaller, lighter, and more ergonomic, as the majority of the changes were requested by the soldiers themselves,” said Victor Yarosh told Army Times in 2018. Yarosh works on the Army's Soldier Weapons program. “The rifle is easier to shoot and has less recoil, all while shooting the same round as the M110. [Additionally,] the CSASS has increased accuracy, which equates to higher hit percentages at longer ranges,” Yarosh said. The newest CSASS not only has a shorter barrel, but also an adjustable stock for easier transport and comfort. “The CSASS is much shorter and lighter than our current system, which will make long dismounted movements and reaction to contact more efficient,” said Spc. Nicholas Farmer, a sniper in C Troop, 1st Battalion, 73rd Cavalry Regiment. Most M4s max out at near 300 meters, but the CSASS allows shooters to reach out to 600 meters. The new rifle can fire the M80A1 Enhanced Performance Round and the XM1158 Advanced Armor Piercing Round. It has a different buttstock and barrel twist than previous CSASS models, comes in just under 10 pounds and uses a Sig Sauer Tango 6 variable 1x6 power scope. Spc. William Holland, a sniper with 2nd BN, 508th Parachute Infantry Regiment, said that the rifle is “lightweight and compact, [which] makes for a more manageable load during post drop operations.” Being airborne, the soldiers rely on maintaining their weapon's optic zero, given the jostling and sometimes hard impact nature of their jobs. To measure how well the CSASS maintains that zero, the test team used a mobile weapons bore sight collimator to ensure the “pre-mission” zero was not degraded by parachute infiltration shock. Once this data was collected, snipers conducted a known distance live fire after static line and military free fall operations. Military Times reported in January that Special Operations Command snipers will soon use the Sig Sauer TANGO6T 1-6x24 Riflescope for their CSASS. Sig Sauer also won the optic competition for the Army's Squad Designated Marksman Rifle with their TANGO6 scope. The SDMR program has been part of a larger shift for the Army to put sniper-like capabilities inside of the squad, giving the base unit of the formation more range and lethality with its M110 Compact Semi-Automatic Sniper System, or CSASS. Tactically, Army leaders see the sniper as a force enhancer because they can conduct a number of missions. “They provide a surveillance mission where they use their high-powered scope to observe activity downrange,” Yarosh said. “A sniper can pin down an enemy force through sniper concealment and engagement to provide the right shots at the right time. They can also prevent an enemy force from moving out of cover, which allows our maneuver forces to exploit the enemy by moving into a better position and engage.” https://www.armytimes.com/news/your-army/2019/07/02/this-units-going-airborne-with-the-armys-newest-sniper-rifle/

Toutes les nouvelles