F-22 Pilot Jeffrey Haney, crashed on November 16, 2010
Weird cough is already very long pursues highly maneuverable aircraft pilots ultramodern F-22 after each flight. This is puzzling at first, and later used to. Evenly, with increasing numbers of cars and flight intensity, we add to this dizziness and partial loss of orientation in space. Were noted several cases where even during the run-up to the runway the aircraft at one point changed direction and rested on trees or buildings airfield. In 3 cases, pilots at one point lost orientation came to himself only in unsafe proximity to land and were able to eject at the last moment.
Last such incident occurred November 15, 2012 near the base «Tindall» in Florida. But one pilot not lucky. In 2010, Alaska his plane at supersonic speed crashed into the ground. It was ascertained that he had lost consciousness due to hypoxia, but simply due to asphyxiation. The representative of the Air Force blamed the pilot himself. Here is his comment: «He (the pilot) is very focused on what he can not breathe, instead of to control the plane.» It turns out that the pilot does not necessarily breathe! While the overall result — lost four aircraft cost $ 140 million each and one pilot. Plane-killer — so at the moment the pilots called the aircraft the F-22.
The scandal around the F-22 broke after April 2012 two elite pilot refused to fly it until such time as there is no established cause of their disgusting and not being eliminated lack of oxygen in the life support system. It was then floated information that such difficulties existed before. It turned out that on the F-16 and F-18, where a similar system was installed livelihood, there were more than 60 cases, when the pilots in flight were close to unconsciousness. So what did it for subsistence, which lured to discover the kind of attention and indeed whether it is a prerequisite to malfunction pilots?
In the 80s of the last century the U.S. Air Force began to experience great discomfort when the transfer of large air with their own areas in the U.S. and Western Europe to the Middle East over the Atlantic and Southeast Asia across the Pacific. The problem lay in the fact that life-support systems pilots contained the cylinders with compressed oxygen supplies that was missing for so long time flights. It was then that the South American spices and suggested using bezballonnuyu air regeneration system. Its principle is based on the acts of zeolites — synthetic molecular filters. They adsorb blocked from flowing through the compressed air, nitrogen, water, carbon dioxide and harmful impurities. With all of this compressed air is supplied from the surrounding atmosphere through the suction inlet of the compressor. So Makar, pilot breathing supplied respiratory gas mixture enriched with oxygen. And the problem of fly great distances solved. A simple and tasteful. For the true all-time U.S. Air Force planes are equipped with such systems.
But it was not so simple. Three years South American experts at fighting for the realization hit cause breathing any toxins. In 2011, Defense Minister rebuked for 11 months to raise into the air all aircraft F-22 to determine the lack of background and eliminate it. But later flights were allowed with ceiling less than 7.5 kilometers to the pilot in case of indisposition could catch a drop height of up to 4.5 km harmless. In August 2012 two squadrons of F-22 aircraft were transferred from the United States in Southeast Asia. Pilots were ordered to fly no more than 4.5 km from the removed oxygen masks and oxygen generating system off. Today all 187 pilots of F-22 are, in their words, in the position of the most highly experimental monkeys.
U.S. Air Force in 2012 had spent $ 20 million on auto spare duplication air regeneration system in a desperate attempt to find out what exactly causes disorientation and feeling bad pilots. The Air Force also believes that something hitherto unknown passes through the suction inlet of the compressor and an oxygen mask on in the pilot. With all of this growing number of American professionals are inclined to think, that once again return to the «good old reliable oxygen cylinder.»
But detective intrigue wilts. At one point is that the cough and dizziness very often manifests itself in the ground staff when the aircraft is preparing to fly the aircraft and engines running. But at this time the air regeneration system still does not work. The conclusion — the life support system of the pilot is not a prerequisite being disgusting aircrew. And there is no reason to renounce it. Effervescent! Purely American.
With such a hasty conclusion can not be accept. Particularly bad symptoms detected in ground staff, give grounds to read about the threat of the use of air regeneration system as a power supply system livelihoods pilot highly maneuverable aircraft. Specifically, highly maneuverable. Processed gas engine aircraft are prerequisites which seek out so long South American spices.
How recycled gases can enter the suction intake? With a sharp change of course and when performing some aerobatics plane fly Kuta cloud of exhaust gases. More striking example — performance figures «bell». Plane actually hanging motionless in this cloud 2-3 seconds. Before take-off at the start, if the wind is blowing in the tail of the aircraft, you can follow the same pattern.
But why molecular filters air regeneration system does not inhibit these unsecured connections? The principle of these filters act (or molecular sieves) such as in a kitchen colander. Large molecules they hold, and small freely passed through their holes. But the diameter of the molecules of nitrogen oxides similar cross section is completely oxygen molecules. Because a mask to breath oxygen-fed toxic mix. So Makar, pilots, not even taking off, start playing «Russian roulette.» Why South American spetsy not viewed all possible situations before making a decision about the substitution of oxygen cylinders on molecular filters, we can only guess. And the first thing that comes to mind is a very low level of competence.
RS One can only hope that the Russian experts at carefully analyze all of the strategic consequences of a mistake the U.S. Air Force and perceive the right decision regarding the choice of power supply life-support systems of the pilot maneuvering the aircraft. In the end, the safety of pilots and their efficiency should be a priority. Naturally, when using oxygen cylinders aircraft such as the Su-27 or T-50 will be hard to cross the ocean. And we need it?
Vladimir Abramov, in 1983-1997 gg. — A leading designer, chief of the special «SPE» Star «