September 14, 2018 | International, Aerospace
AMY MCCULLOUGH
The Air Force plans to redesign the oxygen system in its T-6 Texan II and adjust oxygen control levels in flight, after an exhaustive study determined that varying levels of oxygen concentrations were to blame for the hypoxia-like symptoms reported by pilots.
The service grounded its primary trainer fleet earlier this year while it inspected the Onboard Oxygen Generation System (OBOGS) on all T-6 aircraft, and it stood up an independent review team to determination potential causes.
“So far, technical efforts to date and analysis of data collected have determined that pilots have been exposed to significantly changing levels of oxygen concentration,” said Lt. Gen. Steven Kwast, AETC commander. “The varying levels of oxygen concentration, even though in excess of what the body typically needs, has caused physiological stress that most pilots, on most days, actually adapt to without noticing.” However, the physiological stress of the changing oxygen levels can cause some pilots to experience symptom similar to hypoxia (lack of oxygen), hypocapnea (lack of carbon dioxide), and other related conditions, said Kwast in a press release issued late Thursday.
It is expected to take two to four years to redesign the OBOGS system and fully stabilize oxygen levels in the T-6, a joint effort between Air Education and Training Command and Air Force Materiel Command. The two major commands also are working with industry “to adjust the OBOGS software algorithm to stabilize oxygen concentrations,” according to the release.
“While this should reduce physiological events, the Air Force will pursue a broader redesign,” states the release.
The Air Force and the Navy also have worked together to come up with new maintenance procedures to ensure the OBOGS system operates more efficiently. And, AETC will provide additional training for pilots to help them identify such symptoms and then learn how best to react if they ever encounter them in flight.
“Since our T-6 operational pause, we have made every effort to communicate with every instructor and every student exactly what we've found,” Maj. Gen. Patrick Doherty, 19th Air Force commander, said. “Transparency remains of utmost importance to use as we all work together to ensure that our pilots are safe and know the way ahead.”
August 2, 2023 | International, Land, Security, Other Defence
The expansion and the upgrade of our production infrastructure enables the provision of rapid production of a range of high quality solutions to the Israel Ministry of Defense
December 17, 2020 | International, Aerospace
Posted on December 16, 2020 by Seapower Staff DAVENPORT, Iowa — Cobham Mission Systems' underwing mounted refueling buddy store was carried for the first time during a successful test flight of Boeing's MQ-25 test asset, known as T1, Cobham said in a Dec. 16 release. The test helped to validate the unmanned aircraft's aerodynamics when carrying existing refueling equipment. The flight marks a significant milestone in the development of MQ-25, the first operational, carrier-based unmanned aerial refueler for the U.S. Navy. The Navy's F/A-18 fleet currently operates the same Cobham 31-301 buddy store, when fulfilling this key aerial refueling role. “This marks a significant milestone for the development of unmanned aerial refueling and we are proud that Boeing's MQ-25 test aircraft carried Cobham's underwing mounted equipment on this test flight,” said Jason Apelquist, senior vice president for business development and strategy for Cobham Mission Systems. “It is encouraging to see how proven solutions are being leveraged to further new mission capability. We look forward to supporting next-generation technology and continue to work with our customers as a key partner to deliver the aerial refueling solution of the future.” The 2.5-hour flight was conducted by Boeing test pilots operating from a ground control station at MidAmerica St. Louis Airport in Mascoutah, Illinois, on December 9, 2020. Future flights will continue to test the aerodynamics of the aircraft and the 31-301 Series Buddy Store at various points of the flight envelope. Insights from the tests will inform the eventual progression to the extension and retraction of the hose and drogue used in refueling. https://seapowermagazine.org/cobhams-aerial-refueling-buddy-store-mounted-during-mq-25-test-flight
September 6, 2023 | International, Naval
The Marine Corps will elevate its safety division to fall under the command of a general officer, to ensure more uniform safety compliance across the force