Questions tagged [rotary-wing]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
7
votes
3answers
9k views

Why don't helicopters prefer shorter rotors with more blades? [duplicate]

My understanding of helicopters is that, despite theoretically increasing efficiency, longer blades are worse in practice than short ones in every respect (except, perhaps, cost): Longer blades are ...
10
votes
3answers
20k views

How does the efficiency of a fixed wing compare to a rotary wing?

Is fixed wing more efficient than rotary wing? If yes, why is that?
8
votes
2answers
799 views

How much could human power add to the endurance of an electric gyrocopter?

If we take a single seater electric gyrocopter like this one, could a human-powered propeller like this add to the endurance of the aircraft? The gyrocopter only needs a 32km/h forward speed to stay ...
7
votes
2answers
2k views

Why are rotary wing aircraft less efficient than fixed wing aircraft?

This question showed that rotary wing is less efficient than fixed wing, but the answers don't really address why. Why are rotary wing aircraft less efficient than their fixed-wing counterparts? ...
7
votes
4answers
706 views

Is a fixed wing more efficient in reaching a certain altitude than rotary wing?

Given the limited amount of energy (battery or fuel) let's reach the maximum possible altitude! Rotary wing aircraft pushes the air directly downwards and propels itself straight up. Fixed wing, ...