Abstract
The optimum loading for rotors has previously been found for hover, climb and wind turbine conditions; but, up to now, no one has determined the optimum rotor loading in descent. This could be an important design consideration for rotary-wing parachutes and low-speed descents. In this paper, the optimal loading for a powered rotor in descent is found from momentum theory based on a variational principle. This loading is compared with the optimal loading for a rotor in hover or climb and with the Betz rotor loading (which is optimum for a lightly-loaded rotor). Wake contraction for each of the various loadings is also presented.
| Original language | English |
|---|---|
| Pages (from-to) | 580-584 |
| Number of pages | 5 |
| Journal | Chinese Journal of Aeronautics |
| Volume | 29 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 1 2016 |
Keywords
- Descent
- Helicopter
- Inflow
- Loading
- Optimum
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