F22 down
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F22 down
Pilot appears to have got out ok
F-22 Raptor Crashes At Tyndall AFB
This is an earlier incident
Tyndall F-22 mishap report cites pilot error - Air Force News | News from Afghanistan & Iraq - Air Force Times
Wonder what he will be flying next.
F-22 Raptor Crashes At Tyndall AFB
This is an earlier incident
A pilot in training failed to advance an F-22 to “military power” during takeoff and prematurely retracted the jet’s landing gear, causing a mishap May 31 at Tyndall Air Force Base, Fla., according to an accident report released Thursday.
Without enough thrust during the touch-and-go training, the F-22 “settled back to the runway” and skidded along the ground to a stop, causing $35 million in damage to the stealthy jet. The pilot, assigned to the 325th Fighter Wing’s 43rd Fighter Squadron, exited the plane with minor injuries.
The pilot had recently transferred from another airframe and was on his second training flight after 10 simulator training exercises and more than 100 hours of academic training, the Air Force said at the time of the incident.
The squadron at Tyndall was part of Air Education and Training Command at the time of the crash, but has recently transferred to the authority of Air Combat Command. Another F-22 squadron is transferring from Holloman Air Force Base, N.M., to Tyndall, but the move is on hold while Congress and the administration hash out an agreement on the fiscal 2013 budget.
While most accident investigation board reports are released in full within 24 hours of the announcement of findings, the report in this case is only available through a pending Freedom of Information Act request, AETC spokeswoman Dianne Moffett said Thursday.
Without enough thrust during the touch-and-go training, the F-22 “settled back to the runway” and skidded along the ground to a stop, causing $35 million in damage to the stealthy jet. The pilot, assigned to the 325th Fighter Wing’s 43rd Fighter Squadron, exited the plane with minor injuries.
The pilot had recently transferred from another airframe and was on his second training flight after 10 simulator training exercises and more than 100 hours of academic training, the Air Force said at the time of the incident.
The squadron at Tyndall was part of Air Education and Training Command at the time of the crash, but has recently transferred to the authority of Air Combat Command. Another F-22 squadron is transferring from Holloman Air Force Base, N.M., to Tyndall, but the move is on hold while Congress and the administration hash out an agreement on the fiscal 2013 budget.
While most accident investigation board reports are released in full within 24 hours of the announcement of findings, the report in this case is only available through a pending Freedom of Information Act request, AETC spokeswoman Dianne Moffett said Thursday.
Wonder what he will be flying next.
Last edited by NutLoose; 15th Nov 2012 at 22:47.
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Military power is full power, reheat included I believe.
This is an example of it.
There are two incidents if you read my post, the top one i.e. the latest, he ejected, sorry for the confusion.
.
This is an example of it.
There are two incidents if you read my post, the top one i.e. the latest, he ejected, sorry for the confusion.
.
Last edited by NutLoose; 16th Nov 2012 at 08:53.
MIL Power
To clarify military power is full power without reheat/afterburner.
So mil power would be the maximum throttle setting, minus reheat/afterburner.
So mil power would be the maximum throttle setting, minus reheat/afterburner.
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Sandie - Thanks, yes, got that far, but in this case there seems to be rather more to it. What stopped it at part power? Is there a detent? Or some magic button to press? And why call it "military power"
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pohm
tee-hee!
Nutloose
The Olympus failure at Patchway was rather more entertaining. Witnesses relate seeing the turbine climb out of its housing, across the floor, up the wall of the test cell, chewing chunks out of the toughened glass observation window, walk across the ceiling, down the opposite wall and back through the remains of the wrecked engine. Not sure which Olympus, possibly an early 593. Visitors to RRHT on Saturday mornings may get a chance to view that cell and see the scars.
tee-hee!
Nutloose
The Olympus failure at Patchway was rather more entertaining. Witnesses relate seeing the turbine climb out of its housing, across the floor, up the wall of the test cell, chewing chunks out of the toughened glass observation window, walk across the ceiling, down the opposite wall and back through the remains of the wrecked engine. Not sure which Olympus, possibly an early 593. Visitors to RRHT on Saturday mornings may get a chance to view that cell and see the scars.
Last edited by mike-wsm; 16th Nov 2012 at 13:42.
Ecce Homo! Loquitur...
Mil power is full cold power - what used to be called max continuous.
This is because in early jets afterburner/reheat was an on-off system and, due to the temperatures involved, could only be used for short bursts of around 30 seconds. In modern jets afterburner is more modulated with various stages from min to max burner.
Jets of the last generation used burner for take-off, the Jaguar for example. The latest generation have sufficient thrust they don't need to use it, saving wear and tear on the jet and the runway, and keeping it in case a problem.
In the case of FBW jets there are other issues concerned with handling when changing configuration. The loss of an F-22 prototype was due to the different handling when the gear was up or down, to the extent the pilot got into a phugoid and shut the throttle and rode into the runway as he was losing control.
So if a pilot selected gear up, and depending on throttle setting, the pitch limits, surface deflections etc, may have contributed to a condition where the jet may suddenly have started sinking with the pilot unable to arrest the descent.
This is because in early jets afterburner/reheat was an on-off system and, due to the temperatures involved, could only be used for short bursts of around 30 seconds. In modern jets afterburner is more modulated with various stages from min to max burner.
Jets of the last generation used burner for take-off, the Jaguar for example. The latest generation have sufficient thrust they don't need to use it, saving wear and tear on the jet and the runway, and keeping it in case a problem.
In the case of FBW jets there are other issues concerned with handling when changing configuration. The loss of an F-22 prototype was due to the different handling when the gear was up or down, to the extent the pilot got into a phugoid and shut the throttle and rode into the runway as he was losing control.
So if a pilot selected gear up, and depending on throttle setting, the pitch limits, surface deflections etc, may have contributed to a condition where the jet may suddenly have started sinking with the pilot unable to arrest the descent.
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A pilot in training failed to advance an F-22 to “military power” during takeoff
But I still can't get my head around failure to advance the throttles, sounds like there is a detent at a lower power setting which he failed to overcome. And what is the nomenclature for the various power settings? Yes, I hear loud and clear that max dry power is called "military power", but why?
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Pictures of the F22 Throttles
A photograph or two of the F22 throttles.
F22 Throttles for you.
If you look on the port side of the cockpit you are able to see the location of the throttles.
Another photo of the throttles
F22 Throttles for you. If you look on the port side of the cockpit you are able to see the location of the throttles.
Another photo of the throttles
Last edited by hval; 16th Nov 2012 at 14:26.
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Jets of the last generation used burner for take-off, the Jaguar for example
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Bevin, much better to do it front of a large audience, though I did think the chutes were a bit of overkill..
My guess is:
The F-22 has a power/weight ratio about 10% better than the F-15 or F-16, which was probably the pilot's previous aircraft.
He shoved the throttles forward to what felt like mil power on his previous jet, judged by the feeling of acceleration. This, however, would be less than mil on the F-22.
Everything else follows.
Somatogravic illusion may also be involved.
The F-22 has a power/weight ratio about 10% better than the F-15 or F-16, which was probably the pilot's previous aircraft.
He shoved the throttles forward to what felt like mil power on his previous jet, judged by the feeling of acceleration. This, however, would be less than mil on the F-22.
Everything else follows.
Somatogravic illusion may also be involved.
Last edited by Fox3WheresMyBanana; 16th Nov 2012 at 15:02.