Aeroelastic studies on a high-performance swept-wing airplane

摘要

Comprehensive aeroelastic analyses and wind tunnel tests have been conducted on a model of a typical high-performance airplane withudswept surfaces. The investigation covered the effect of dynamic pressure upon steady state longitudinal control and stability characteristics as well as aileron effectiveness.ududThe analysis was based upon a superposition method which yields a convergent series which may be applied to any structure on which the load is a function of the deflection. It has been shown that after a fewudterms this series degenerates to an elementary geometric progression which maybe summed to infinity. This conclusion is applicable even to cases where the aeroelastic effects are large and the structure is actually approachinguda condition of instability.ududWind tunnel tests were carried out both at the MassachusettsudInstitute of Technology and the California Institute of Technology.udMeasured data were compared with the results of the theoretical analysis.