eyeinthesky,
Just thinking about your question....
V1 is an IAS at which you correctly state is a stop/go speed (loosely put). However, in a Hot and High airfield the ground speed associated with a V1 would be higher than the IAS. So the V1 could be limited to perhaps V MBE. In essence, the V1 is limited at the lower end by Vmcg and at the upper limit by Vmbe, Vtire and Vr. If you reduce V1 you reduce the stop distance required and increase the go distance. In addition to this if you have a lower V1 then in cases where you're hot and high it might have ben selected low as it would be deemed safer to GO and to STOP - at that high G/S eg Vmbe and Vtire etc etc.
A V1 speed could be low for a number of reasons, eg field limited (short runway) or as per CDL ie no reverse thrust available therefore stopping action reduced.
In the pictured example I would guess the stopping action of this a/c would be the brakes, spoilers and reverse thrust. I am guessing reverse thrust would be most effected by being at a hot and high airfield. The brakes would be probably the most effective retardation device, however, as stated before the G/S would be high to they'd work bloody hard!
L Met
Last edited by londonmet; 24th June 2007 at 21:55.