<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
question can the spine of jet be repaired or is it a write off. Mudd as a pilot does the airforce monitor your 'abuse if you will' of aircraft. The reason I ask is in the private sector employers now are monitoring drivers use and abuse of commercial vehicles.
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Don't know if it's a write off yet. Also, I don't know what you mean by "spine" but I'll guess you mean the whole center of the airplane. That is pretty much right, but add on the roots of the wings, fins and horizontals too. This was a fully instrumented test aircraft, a one of a kind. Although it is the second oldest in the remaining flying inventory, it is actually the third flying model built (tail no 91-4003). It's our loads measurement and envelope expansion jet. I do not think pilot error of any kind is in play here.
The basic F-22 does remember a lot of flight history parameters and these can easily downloaded, post flight, if you have need. The flight test jet telemeters all those parameters, and more, to the ground station in real time. The primary purpose of this capability in the operational jets is to get useage data, not to check on the pilots.
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>The fact of that test Aircraft is that it was operationaly "Stessed" in flight. This the 2nd flyable test aircraft. Much has been evolved in the program. This aircraft more than likely failed from the repeated Stress of the test program. That is what the aircraft is there for.
Test aircraft are pushed beyond paper Thesis.
Anything can be attributed. these planes are built to be broke on purpose. the only way to properly evaluate an aircraft is to push it and keep the pressure on it, So we better understand andfix its capability, its lifespan, and failures.<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Mudd may have a misunderstanding that I can clear up. We are not allowed to attempt to break the airplane in flight. The flight test airplane is only allowed to attempt maneuvers that the strength has already been proven on the ground. We prove that strength with a combination of analytically predicted loads, stress analysis and actual test, sometimes to failure. What happened here was totally unintentional, and will need to be understood.
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Nobody ever really factors in the Negative G loading..<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
We do, and this incident made us very wobbly.
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Assymetric loads are impossible to compute Rate vs Shear<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
We make a good effort at computing them, but not for this maneuver. Holy sh*% !
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Everything is repairable. It's always a Cost analysis on the step to take. To many factors to look at.<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Yup. If it costs to much to do all the work required to restore confidence in the aircraft, it will become a gate guard.
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>This aircraft will never see operational Usage. In fact the actually operational Product may not even be identical to the intial testbirds.<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
That's right, it will never be operational and it has many details that are not the same as the current production models. Yes, it is not the same as the two airframes made before it. However, it is very close in structural configuration to the one we ground tested, and to the current production types.
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>It is best to combat test and fail the aircraft now in a controled combat evaluation test enviroment, than to have it fail cause it was not tested hard enough when True Combat happens and many lives depend on the aircraft and pilot being able to prosecute their mission.<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
If what you mean is to uncover all the glitches we can in flight test, I agree. Realisticaly though, we have less than 5000 hrs total flight time in a relatively controlled environment. Even in 7 years of testing, we have only systematically spot checked the flight envelope. Once operational, the users will rack up hours fast and we'll have ten times the amount of flight hrs real fast. They are bound to find confounding problems that weren't uncovered in test. The users will operate them differently, still within the approved envelope mind you, but different. And the internal equipment will also give new problems. Anyway, I expect it.
THE RAMPTOR ENGINEERING TEAM <img src=icon_smile_big.gif border=0 align=middle>
"Who cares if it works? Does it look good on the ramp?"
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