Helicopter
device · 1939 · Electric age
An aircraft with a main rotor (Sikorsky).
What it is made of
- Main rotor — has part. A main rotor.
- Swashplate — has part. A swashplate.
- Gas turbine — has part. A turboshaft engine.
Principles and materials it uses
Where it is used
- Air ambulance — is used in. Helicopters.
History: what it evolved from and what it influenced
- Autogyro — evolved from. Experience with autogyros helped create the helicopter.
- Tiltrotor — evolved into. A helicopter that turns into an aeroplane.
What it is a kind of
- Aircraft — is a kind of. An aircraft.