Structural optimization of high speed prop rotors including aeroelastic stability constraints
✍ Scribed by A. Chattopadhyay; T.R. McCarthy; J.F. Madden III
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 894 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0895-7177
No coin nor oath required. For personal study only.
✦ Synopsis
An optimization procedure is developed to address the problem of seroelastic stability of high speed prop-rotor aircraft. A composite box beam is used as a perturbational stiffness model and the objective function to be minimized is the perturbational weight. An optimization algorithm, which used the method of feasible directions, is coupled with a hybrid approximate analysis to reduce the computational expense of exact analyses for every function evaluation. The results, compared to a reference rotor which is unstable in both hover and high speed cruise, show significant improvements in the aeroelastic stability without large weight penalties.