The Instantaneous Efficiency of Cantilever Geared Rotary Actuators in Flight Control Systems 2015-01-2413
The instantaneous efficiency of an epicyclic geared rotary actuator is an important factor in sizing flight control systems where compound epicyclic gear trains are typically used. The efficiency variation can be smooth or fluctuating depending on the combination and timing of the teeth of ring gears, planet gears and sun gears.
In a previous paper [1], the instantaneous efficiency characteristics of actuators with symmetric planets were investigated. The actuator's reacting forces on the planets are symmetric and the overall length of the planet gears will not affect the efficiency.
In this paper, a cantilever actuator with asymmetric planet gears is studied. The length and location of the reaction forces on the planet gears are key factors in the efficiency calculation. Theoretical derivation is presented and test results are compared.
Citation: Wang, A., Davies, J., Gitnes, S., and El-Bayoumy, L., "The Instantaneous Efficiency of Cantilever Geared Rotary Actuators in Flight Control Systems," SAE Technical Paper 2015-01-2413, 2015, https://doi.org/10.4271/2015-01-2413. Download Citation
Author(s):
Anngwo Wang, Jonathan Davies, Seth Gitnes, Lotfi El-Bayoumy
Affiliated:
MOOG Inc. Aircraft Group
Pages: 12
Event:
SAE 2015 AeroTech Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Flight control systems
Gears
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