The propulsive efficiency is given by
A. work done by engine / propulsive power
B. propulsive power / work done by engine
C. energy input rate / propulsive power
D. propulsive power / energy input rate
Answer:D
The propulsive efficiency is given by
A. work done by engine / propulsive power B. propulsive power / work done by engine C. energy input rate / propulsive power D. propulsive power / energy input rate
Explanation: This metric indicates how effectively the energy released during combustion is converted to propellant fuel.