Agaricus bisporus, a while back JF posted something that is worth reading (as always) about Concorde.
[quote]So far as Vzrc goes, the perhaps the following data may be of interest. It is for the aircraft at MTOW (185,070 kg) at LHR, on an ISA day with zero wind:
V1: 164 kts
Vzrc-3e-Gear Down: c190 kts (so not routinely calculated)
VR: 193 kts
V2: 215 kts
Vzrc-2e-Gear Up: 260 kts (Calculated for every departure)
Vzrc-2e-Gear Down: 316 kts (Above the sea level Vmo of 300 kts!)
My final comment: Just look at the jump in Vzrc when you go from three engines to two engines. About 70 kts. If the gear is stuck down that becomes an awesome 126 kts.<hr></blockquote>
My mate Nigel says that they fly the climb out at 250 kts, not V2, so not too far away from a two engined climb out capability, so long as the gear is up, but if the gear is down, then no chance!
If that !!!! Modrey really thinks that a B747-400 will climb away at MTOW after losing TWO engines and with the gear still down, then I hope I never fly on any airline he has anything to do with.
IT WILL NOT.
How he knows exactly what damage the Concorde sustained, and when, is also open to debate, along with his crassly stupid statement that any other four engined type would have survived to a safe landing.
Sounds like a new hire who knows the square root of f$ck all about large jet operations!