Question

9. What was one solution to reducing the motor weight in aircraft?

*
3 points
a. Using rotary engines
b. Using water as a coolant
c. Using multiengine planes
d. Using motorcycle engines

Answer 1

a. Using rotary engines

Rotary engines offered a high power-to-weight ratio and effective air cooling (no heavy radiator), so they were used to reduce motor weight in early aircraft.