Model Validation of Wake-Vortex/Aircraft Encounters

Pete, Kimberly R.; Vicroy, Dan D.; Smith, Sonya T.

Wake-vortex effects on an 10% scale model of the B737-100 aircraft are calculated using both strip theory and vortex-lattice methods. The results are then compared to data taken in the 30ft x 60ft wind tunnel at NASA Langley Research Center (LaRC). The accuracy of the models for a reduced geometry, such with the horizontal stabilizer and the vertical tail removed, is also investigated. Using a 10% error in the circulation strength and comparing the model's results with the experiment illustrates the sensitivity of the models to the vortex circulation strength. It was determined that both strip theory and the vortex lattice method give accurate results when all the geometrical information is used. When the horizontal stabilizer and vertical tail were removed there were difficulties modeling the sideforce coefficient and pitching moment. With the removal of only the vertical tail unacceptable errors occurred when modeling the sideforce coefficient and yawing moment. Lift could not be accurately modeled with either the full geometry or the reduced geometry.

Document ID

20010063700

Acquisition Source

Langley Research Center

Document Type

Preprint (Draft being sent to journal)

Authors

Date Acquired

September 7, 2013

Publication Date

January 1, 2000

Subject Category

Report/Patent Number

Meeting Information

Meeting: AIAA Atmospheric Flight Mechanics Conference

Location: Denver, CO

Country: United States

Start Date: August 14, 2000

End Date: August 17, 2000

Sponsors: American Inst. of Aeronautics and Astronautics

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Public

Public Use Permitted.

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