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An estimate of the enroute noise of an advanced turboprop airplane [microform] / James H. Dittmar.
Microform
Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, [1986]
1986
0 resources
Preliminary measurement of the noise from the 2/9 scale model of the large-scale advanced propfan (LAP) propeller, SR-7A [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1985]
1985
0 resources
Further comparison of wind tunnel and airplane acoustic data for advanced design high speed propeller models [microform] / James H. Dittmar.
Microform
[Washington, D.C.] : National Aeronautics and Space Administration, [1985]
1985
0 resources
Prediction of far field noise from wind energy farms / Kevin P. Shepherd and Harvey H. Hubbard.
Microform
Hampton, Va. : Bionetics Corporation : National Aeronautics and Space Administration, Langley Research Center, [1986]
1986
0 resources