Re: Air France Concorde crashes after departing Paris CDG

Date:         31 Mar 2001 16:43:02 
From: (Filip De Vos)
Organization: University of Ghent, Belgium
References:   1 2 3 4
Followups:    1 2 3
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matt weber ( wrote:

: Flyable only in a very narrow sense of the word.  Concorde is a strange
: airliner in that minimum drag at MGTOW on most aircraft is pretty close to
: V2, on Concorde it is at 415kt.  The full thrust of 2 engines on Concorde is
: roughly equal to drag at 275kt.  Below 275kt, drag exceeds thrust,
: consequently flight at speeds below 275kt on 2 engines is a black hole in

Part of that drag is the rudder, deflected to compensate for the
assymetric thrust. So my question is, is it possible to make a climbing
turn at a lower speed than 275kt? (turning towards the dead engines)

: the flight envelope. If you get into it, unless you can somehow get the
: speed above 275kt, or get another engine going, the outcome will be fatal.
: You cannot remain in the air for very long..   At low altitude, it is in
: fact a death trap.

"Who needs credibility around  |    Filip De Vos
 here?" -- T. L. Elifritz      |