James H. Dittmar

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The effect of front-to-rear propeller spacing on the interaction noise of a model counterrotation propeller at cruise conditions

by James H. Dittmar First published in 1987 — 3 editions

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An estimate of the noise shielding on the fuselage resulting from installing a short duct around an advanced propeller

by James H. Dittmar First published in 1988 — 2 editions

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The effect of front-to-rear propeller spacing on the interaction noise at cruise conditions of a model counterrotation propeller having a reduced diameter aft propeller

by James H. Dittmar First published in 1988 — 2 editions

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An estimate of the enroute noise of an advanced turboprop airplane

by James H. Dittmar First published in 1986 — 1 edition

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An evaluation of some alternative approaches for reducing fan tone noise

by James H. Dittmar First published in 1992 — 1 edition

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Comparison of propeller cruise noise data taken in the NASA Lewis 8- by 6-foot wind tunnel with other tunnel and flight data

by James H. Dittmar First published in 1989 — 1 edition

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A concept for a counterrotating fan with reduced tone noise

by James H. Dittmar First published in 1992 — 1 edition

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Cruise noise of counterrotation propeller at angle of attack in wind tunnel

by James H. Dittmar First published in 1987 — 1 edition

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Cruise noise of the 2/9th scale model of the large-scale advanced propfan (LAP) propeller, SR-7A

by James H. Dittmar First published in 1987 — 1 edition

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Detailed noise measurements on the SR-7A propeller: tone behavior with helical tip Mach number

by James H. Dittmar First published in 1991 — 1 edition

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The effect of swirl recovery vanes on the cruise noise of an advanced propeller

by James H. Dittmar First published in 1990 — 1 edition

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A fan concept to meet the 2017 noise goals

by James H. Dittmar First published in 1998 — 1 edition

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Laboratory experiments on active suppression of advanced tuboprop noise

by James H. Dittmar First published in 1985 — 1 edition

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Laboratory experiments on active suppression of advanced turboprop noise.

by James H. Dittmar First published in 1985 — 1 edition

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Potential reduction of en route noise from an advanced turboprop aircraft

by James H. Dittmar First published in 1990 — 1 edition

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$Cover of: Predicted and measured boundary layer refraction for advanced turboprop propeller noise$

Predicted and measured boundary layer refraction for advanced turboprop propeller noise

by James H. Dittmar First published in 1990 — 1 edition

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Preliminary measurement of the noise from the 2/9 scale model of the large-scale advanced propfan (LAP) propeller, SR-7A

by James H. Dittmar First published in 1985 — 1 edition

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Reduced perceived noise low tip speed fans as result of abandoning cutoff stator vane numbers

by James H. Dittmar First published in 1998 — 1 edition

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Some acoustic results from the Pratt and Whitney Advanced Ducted Propulsor: Fan 1

by James H. Dittmar First published in 1999 — 1 edition

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Some design philosophy for reducing the community noise of advanced counter-rotation propellers

by James H. Dittmar First published in 1985 — 1 edition

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OLID: OL4411273A

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Created August 31, 2008
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James H. Dittmar

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