Helicopter rotor rotational noise predictions based on measured high-frequency blade loads /

Effects of repetition rate and impulsiveness of simulated helicopter rotor noise on annoyance /

Powell, Clemans A.
McCurdy, David A.
Langley Research Center.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1982

"February 1982"--Cover."Langley Research Center."Includes bibliographical references.Mode of access:...

Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations /

Hoad, Danny R.
Langley Research Center.
Army Research and Technology Laboratories (U.S.). Structures Laboratory.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1979

Subject category 71."December 1979"--Cover."Langley Research Center.""Structures Laboratory, AVRADCO...

Determination of rotor harmonic blade loads from acoustic measurements /

Kasper, Peter K.
U.S. Army Air Mobility Research and Development Laboratory.
Langley Research Center.
Wyle Laboratories.

January 1975

"Prepared by Wyle Laboratories ... for Langley Rewsearch Center and U.S. Army Air Mobility R&D Labor...

Prediction of helicopter rotor discrete frequency noise : a computer program incorporating realistic blade motions and advanced acoustic formulation /

Brentner, Kenneth S.
Langley Research Center.

January 1986

Prepared at Langley Research Center."October 1986."Includes bibliographical references (p. 22-23).Mo...

Theory of noise generation from moving bodies with an application to helicopter rotors /

Farassat, F.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 46-47).Mode ...

Helicopter noise : blade slap /

Leverton, John W.
Langley Research Center.
University of Southampton.
United States. National Aeronautics and Space Administration.

Prepared by University of Southampton for Langley Research Center.Includes bibliographical reference...

A computer program to predict rotor rotational noise of a stationary rotor from blade loading coefficients /

Ramakrishnan, Ramani.
Hosier, Robert N., joint author.
Randall, Donald, joint author.
Langley Research Center.

January 1976

Cover title.Includes bibliographical references (p. 109).Mode of access: Internet

Helicopter main-rotor noise : determination of source contributions using scaled model data /

Brooks, Thomas F.
Marcolini, Michael A.
Jolly, J. Ralph.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.

January 1988

"August 1988"--Cover.Includes bibliographical references (p. 12).Mode of access: Internet

Evaluation of the annoyance due to helicopter rotor noise /

Sternfeld, Harry.
Doyle, Linda Bukowski, joint author.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Office.

January 1978

Issued June 1978.Prepared for Langley Research Center, Hampton, Va., under contract NAS1-14192.Inclu...

Prediction of rotating-blade vortex noise from noise of nonrotating blades /

Fink, Martin R.
Amiet, Roy K., joint author.
Schlinker, Robert H., joint author.
United States. National Aeronautics and Space Administration.
Langley Research Center.
United Technologies Research Center.

January 1976

Cover title.Includes bibliographical references (p. 46-48).Mode of access: Internet

Prediction of airframe noise /

Hardin, Jay C.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 51-56).Mode ...

Analysis of helicopter rotor blade torsional oscillations due to stall /

Crimi, Peter, 1935-
U.S. Army Air Mobility Research and Development Laboratory.
Langley Research Center.
Avco Corporation. Systems Division.

January 1975

"Prepared by AVCO Systems Division ... for Langley Research Center."Cover title.Includes bibliograph...

Research investigation of helicopter main rotor/tail rotor interaction noise /

Fitzgerald, J.
Kohlhepp, F.
Lewis Research Center.

January 1988

"May 1988"--Cover."Prepared for Lewis Research Center under Contract NAS1-17126."Includes bibliograp...

Flight measurements of the effects of blade out of track on the vibration levels on a tandem rotor helicopter /

United States. National Aeronautics and Space Administration.
Langley Research Center.

"May 1960."Cover title.Includes bibliographical references (p. 13).Mode of access: Internet

An analytical evaluation of airfoil sections for helicopter rotor applications /

Bingham, Gene J.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 12-13).Mode ...

Effects of repetition rate and impulsiveness of simulated helicopter rotor noise on annoyance /

Powell, Clemans A.
McCurdy, David A.
Langley Research Center.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1982

"February 1982"--Cover."Langley Research Center."Includes bibliographical references.Mode of access:...

Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations /

Hoad, Danny R.
Langley Research Center.
Army Research and Technology Laboratories (U.S.). Structures Laboratory.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1979

Subject category 71."December 1979"--Cover."Langley Research Center.""Structures Laboratory, AVRADCO...

Determination of rotor harmonic blade loads from acoustic measurements /

Kasper, Peter K.
U.S. Army Air Mobility Research and Development Laboratory.
Langley Research Center.
Wyle Laboratories.

January 1975

"Prepared by Wyle Laboratories ... for Langley Rewsearch Center and U.S. Army Air Mobility R&D Labor...

Prediction of helicopter rotor discrete frequency noise : a computer program incorporating realistic blade motions and advanced acoustic formulation /

Brentner, Kenneth S.
Langley Research Center.

January 1986

Prepared at Langley Research Center."October 1986."Includes bibliographical references (p. 22-23).Mo...

Theory of noise generation from moving bodies with an application to helicopter rotors /

Farassat, F.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 46-47).Mode ...

Helicopter noise : blade slap /

Leverton, John W.
Langley Research Center.
University of Southampton.
United States. National Aeronautics and Space Administration.

Prepared by University of Southampton for Langley Research Center.Includes bibliographical reference...

A computer program to predict rotor rotational noise of a stationary rotor from blade loading coefficients /

Ramakrishnan, Ramani.
Hosier, Robert N., joint author.
Randall, Donald, joint author.
Langley Research Center.

January 1976

Cover title.Includes bibliographical references (p. 109).Mode of access: Internet

Helicopter main-rotor noise : determination of source contributions using scaled model data /

Brooks, Thomas F.
Marcolini, Michael A.
Jolly, J. Ralph.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.

January 1988

"August 1988"--Cover.Includes bibliographical references (p. 12).Mode of access: Internet

Evaluation of the annoyance due to helicopter rotor noise /

Sternfeld, Harry.
Doyle, Linda Bukowski, joint author.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Office.

January 1978

Issued June 1978.Prepared for Langley Research Center, Hampton, Va., under contract NAS1-14192.Inclu...

Prediction of rotating-blade vortex noise from noise of nonrotating blades /

Fink, Martin R.
Amiet, Roy K., joint author.
Schlinker, Robert H., joint author.
United States. National Aeronautics and Space Administration.
Langley Research Center.
United Technologies Research Center.

January 1976

Cover title.Includes bibliographical references (p. 46-48).Mode of access: Internet

Prediction of airframe noise /

Hardin, Jay C.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 51-56).Mode ...

Analysis of helicopter rotor blade torsional oscillations due to stall /

Crimi, Peter, 1935-
U.S. Army Air Mobility Research and Development Laboratory.
Langley Research Center.
Avco Corporation. Systems Division.

January 1975

"Prepared by AVCO Systems Division ... for Langley Research Center."Cover title.Includes bibliograph...

Research investigation of helicopter main rotor/tail rotor interaction noise /

Fitzgerald, J.
Kohlhepp, F.
Lewis Research Center.

January 1988

"May 1988"--Cover."Prepared for Lewis Research Center under Contract NAS1-17126."Includes bibliograp...

Flight measurements of the effects of blade out of track on the vibration levels on a tandem rotor helicopter /

United States. National Aeronautics and Space Administration.
Langley Research Center.

"May 1960."Cover title.Includes bibliographical references (p. 13).Mode of access: Internet

An analytical evaluation of airfoil sections for helicopter rotor applications /

Bingham, Gene J.
Langley Research Center.

January 1975

Prepared at Langley Research Center.Cover title.Includes bibliographical references (p. 12-13).Mode ...

Effects of repetition rate and impulsiveness of simulated helicopter rotor noise on annoyance /

Powell, Clemans A.
McCurdy, David A.
Langley Research Center.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1982

"February 1982"--Cover."Langley Research Center."Includes bibliographical references.Mode of access:...

Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations /

Hoad, Danny R.
Langley Research Center.
Army Research and Technology Laboratories (U.S.). Structures Laboratory.
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.

January 1979

Subject category 71."December 1979"--Cover."Langley Research Center.""Structures Laboratory, AVRADCO...

Determination of rotor harmonic blade loads from acoustic measurements /

Kasper, Peter K.
U.S. Army Air Mobility Research and Development Laboratory.
Langley Research Center.
Wyle Laboratories.

January 1975

"Prepared by Wyle Laboratories ... for Langley Rewsearch Center and U.S. Army Air Mobility R&D Labor...

Helicopter rotor rotational noise predictions based on measured high-frequency blade loads /

Abstract

Extracted data

Helicopter rotor rotational noise predictions based on measured high-frequency blade loads /

Abstract

Extracted data

Related items

Related items