Getting back to Crumpp's very first posting to start this thread
Quote:
Originally Posted by Crumpp
Amoung the Western Front warring powers during World War II, only two nations had measurable and definable stability and control standards. The two nation were the United States and Germany.
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We also have Crumpp stating:
Quote:
Originally Posted by Crumpp
Here is the USAAF and USN standards adopted in 1944.
Quote:
During October 1944, the National Advisory Committee conducted a series of conferences with the”Army, Navy, and representatives of the aircraft industry for the purpose of discussing the flight-test procedures used in measuring the stability and control characteristics of airplanes. The conferences were initiated by the Army Air Forces, Air Technical Service Command, to acquaint the flight organizations of the industry with the flight
test methods employed by the NACA and to standardize the techniques insofar as possible as they are employed by the various manufacturers and agencies engaged in determining the flying qualities of airplanes
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Ergo:
Not one of the aircraft fielded by the Americans during WW2 was designed to Crumpp's set of "standards" - until things were standardised some time after a series of conferences held in October 1944 the American aviation industry was operating to a similar system to that of the British. This whole waste of time argument has been a huge red herring by Crumpp
because it is completely irrelevant to anything to do with the design of the Spitfire.
Quote:
Originally Posted by Crumpp
Let's not be obtuse. I never said there was no research in stability and control.
I said they stagnated into an attitude that flying qualities was an academic exercise and that the pilot's opinion was what was practical.
Big difference from what you are claiming.
The NACA took a different route. They developed techniques as well as equipment to measure and quantify behaviors. Part of that system was training test pilots and developing manuevers to define behaviors within flying qualities. In fact, it was Cooper's experience as a test pilot at the NACA that led to the development of the Cooper-Harper Rating scale.
http://www.google.com/url?sa=t&rct=j...zIxnwH4SfCszng |
And When did Cooper become a Test Pilot for NACA? 1945! NACA was as dependent on test pilot's opinions as any other nation throughout most of WW2 and probably beyond.
The fact that the Spitfire did not meet some of NACA's criteria, formalised in 1941, should be of no surprise to anyone - I would suggest very few aircraft designed during the late 30s would have met NACA's criteria in full.
This thread has been a complete waste of time.
