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 Low altitude and mach speed		  Forum Locked
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Bob.fr

France
16 Posts
Posted - 07/01/2004 :  08:31:50  Show Profile

Playing with scenario combat lancer I saw I could fly NOE with the F-111A at 1699 Kmph.

I noticed the drag effect of low flying on fuel usage but this speed value seems too much to me (I'm still after my data sheets to verify).

My understanding was that very low flying max speed was most of the time subsonic or generally no more than around mach 1.

Am I wrong or what ?

momorgan

USA
71 Posts
Posted - 07/18/2004 :  17:16:27  Show Profile  Visit momorgan's Homepage
No you're right, Bob. The very dense air at low altitude makes it very hard to go supersonic because of the mach wave and compressibility. As a result aircraft flying supersonic at low altitude have to use afterburner to get through the Mach Wall and keep their mach speed up. The F-111 can fly about 1.2 to 1.3 Mach (around 1000 nm/hr) on the deck in AB and had huge fuel tanks to keep stoking those burners.
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Bob.fr

France
16 Posts
Posted - 07/09/2004 :  09:18:31  Show Profile

I am only qualified to pilot paraglider for myself and the flying domain of such "machine" is .... so tight compared to F-111 ! I'm relying on experts to reply.
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Lee Elmendorf


61 Posts
Posted - 07/09/2004 :  06:48:03  Show Profile
I have a private pilots license but I only fly jets in the coach section.

Maybe Mo can answer. He may be on vacation or just busy right now.
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Bob.fr

France
16 Posts
Posted - 07/09/2004 :  04:46:32  Show Profile

No one after that point ?
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