The role of airfoil geometry in minimizing the effect of insect contamination of laminar flow sectionsA method has been developed to predict the contamination of an airfoil by insects and the resultant performance penalty. Insect aerodynamics have been modeled and the impingement of insects on an airfoil are solved by calculating their trajectories. Upon impact, insect rupture and the resulting height of the debris is determined based on experimental data. A boundary layer analysis is performed to determine which insects cause boundary layer transition and the resultant drag penalty. A contaminated airfoil figure of merit is presented to be used to compare airfoil susceptibility. Results show that the insect contamination effects depend on accretion conditions, airfoil angle of attack and Reynolds number. The importance of the stagnation region to designing airfoils for minimum drag penalties is discussed.
Document ID
19840061412
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maresh, J. L. (Ohio State Univ. Columbus, OH, United States)
Bragg, M. B. (Ohio State University Columbus, OH, United States)