An approximate model for the performance and acoustic predictions of counterrotating propeller configurations
Subtitle: by Brett William Denner.
Contributors: United States. National Aeronautics and Space Administration.
Series: NASA-CR -- 180667.; NASA contractor report -- NASA CR-180667.
Publisher: Texas A&M University
Published: 1990
Place of publication: [College Station, Tex.?]
Language: eng
Format: Microform
Subjects: Propellers, Aerial.
Notes: Distributed to depository libraries in microfiche.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1990. 1 microfiche.