Displaying 19 of 19 results for author "Dittmar, James H"
Reduced perceived noise low tip speed fans as result of abandoning cutoff stator vane numbers [microform] / James Dittmar.
Microform
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; Springfield, VA : National Technical Information Service, distributor, [1998]
1998
0 resources
A fan concept to meet the 2017 noise goals [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1998]
1998
0 resources
A fan concept to meet the 2017 noise goals [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; Springfield, VA : National Technical Information Service, distributor, [1998]
1998
0 resources
Some acoustic results from the Pratt and Whitney Advanced Ducted Propulsor [microform] : Fan 1 / James H. Dittmar and David M. Elliott, Lawrence A. Bock.
Microform
[Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1999]
1999
0 resources
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
Some design philosophy for reducing the community noise of advanced counter-rotation propellers [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1985]
1985
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
An experimental investigation of reducing advanced turboprop cabin noise by wing shielding [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1986]
1986
0 resources
Laboratory experiments on active suppression of advanced tuboprop noise [microform] / James H. Dittmar.
Microform
[Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1985]
1985
0 resources
Noise reduction for model counterrotation propeller at cruise by reducing aft-propeller diameter [microform] / James H. Dittmar and David B. Stang.
Microform
Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, [1987]
1987
1 resource
Available online
A possible explanation for the present difference between linear noise theory and experimental data for supersonic helical tip speed propellers [microform] / James H. Dittmar.
Microform
[Washington, D.C. : National Aeronautics and Space Administration, 1983]
1983
0 resources
Noise of the SR-6 propeller model at 2⁰ and 4⁰ angles of attack [microform] / James H. Dittmar, George L. Stefko, and Robert J. Jeracki.
Microform
[Washington, D.C. : National Aeronautics and Space Administration, 1983]
1983
0 resources
Fan noise reduction achieved by removing tip flow irregularities behind the rotor--forward arc test configuration [microform] / James H. Dittmar, Richard P. Woodward, and Michael J. MacKinnon.
Microform
[Washington, D.C. : National Aeronautics and Space Administration, 1984]
1984
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
Cruise noise of the SR-2 propeller model in a wind tunnel / James H. Dittmar.
Web Resource
[Washington, D.C.] : National Aeronautics and Space Administration, [1989]
1989
1 resource
Available online
Cruise noise of the SR-2 propeller model in a wind tunnel [microform] / James H. Dittmar.
Microform
[Washington, D.C.] : National Aeronautics and Space Administration, [1989]
1989
1 resource
Available online
The alternative low noise fan / James H. Dittmar [and four others].
Web Resource
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, September 2000.
2000-9
1 resource
Available online
The alternative low noise fan / James H. Dittmar [and four others].
Web Resource
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, October 2000.
2000-10
1 resource
Available online
A fan concept to meet the 2017 noise goals / James H. Dittmar.
Web Resource
Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, November 1998.
1998-11
1 resource