Thrust-to-Weight Ratio
Thrust and weight balance
The existing force-balance view relates thrust, weight, hover capability, and ideal vertical acceleration.
Thrust must beat weight for vertical climb
TWR compares engine thrust with the vehicle weight at Earth gravity. A value above 1 can hover in this simplified force balance; values below 1 need aerodynamic lift or external support.
Moderate thrust - capable of vertical takeoff
Thrust-to-weight ratio
1.020
Moderate thrust - capable of vertical takeoff
Vertical flight
Capable
Ideal Earth-gravity force balance
Thrust
100,000 N
10.00 N/kg
Vehicle mass
10,000 kg
98,067 N weight
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