View Full Version : Mach Crit B747
YHZ Pilot
11th December 2007, 15:49
Hi Everyone,
Does anyone know where a shock wave first appears on the 747?
shimmydamper
11th December 2007, 16:00
I believe on the hump
hawk37
11th December 2007, 17:21
It may well be on the fuselage as shimmy states, but if your asking about the wing, normally appears first at the thickest point of the wing.
YHZ Pilot
12th December 2007, 10:47
The first place the shock wave appears on the entire a/c. Doesn't necessarly have to be on the wing.
777fly
13th December 2007, 00:19
As any 744 pilot knows, M crit is achieved, at normal cruise speed, at a point on the upper fuselage approx 2 metres aft of the Captain's seat. This is exactly above the flight crew rest area and is recognised as a constant tearing noise. Only the truely jet-lagged can sleep soundly at this position.
YHZ Pilot
13th December 2007, 10:39
Thanks for the replies!