Question Statement:
Two missiles A and B powered by solid rocket motors have identical specific
impulse, liftoff mass of 5600 kg each, and burn durations of
30At = s
and
70Bt = s, respectively. The propellant mass flow rates,
Am
and
Bm
, for
missiles A and B, respectively, are given by
120 kg/s, 0 30
70 kg/s, 0 70
A
B
t
t
m
m
=
=
Neglecting gravity and aerodynamic forces, the relationship between the final
velocities
AV and
BV of missiles A and B, respectively, is given by
Options:
- (A) 4.1 BAVV =
- (B) BAVV =
- (C) 0.5 BAVV =
- (D) 0.7 BAVV =