Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 104
Book Description
Near-field Noise Prediction for Aircraft in Cruising Flight: Methods Manual
Author: A Computer Program for the Prediction of Near Field Noise of Aircraft in Cruising Flight: User's Guide
Author: Scientific and Technical Aerospace Reports
Author: Prediction Methods for Near Field Noise Environments of VTOL Aircraft
Author: Louis C. SutherlandPublisher:
ISBN:
Category :
Languages : en
Pages : 244
Book Description
This report establishes a consistent set of prediction methods which may be used to estimate near field noise levels for jet powered and rotor/propeller powered VTOL aircraft operating in close proximity to the ground. The methods provided utilize available theory augmented extensively by experimental data which was available or was obtained during the program. The noise prediction methods presented will allow an analysis of near field environments of VTOL aircraft using a simplified procedure suitable for manual calculations. The experimental effort carried out in the program consisted of noise measurements in the near field of a model propeller and a subsonic jet in a free and vertical configuration. Ground reflection correction factors for a simple source are tabulated along with the computer program listing. The methods described in this report are intended for use by aircraft designers for the prediction of the near field noise environment of VTOL aircraft as required in MIL A 8893 Airplane Strength and Rigidity, Sonic Fatigue Resistance.
NASA Technical Memorandum
Author: The Shock and Vibration Digest
Author: Noise Predictions of a High Bypass Turbofan Engine Using the Lockheed Near-Field Noise Prediction Program
Author: A Study of the Prediction of Cruise Noise and Laminar Flow Control Noise Criteria for Subsonic Air Transports
Author: Data Development for ASTM E24.06.02 Round Robin Program on Instability Prediction
Author: Aircraft Noise Prediction Program
Author: W. E. ZorumskiPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 204
Book Description
Aircraft noise prediction theoretical methods are given. The prediction of data which affect noise generation and propagation is addressed. These data include the aircraft flight dynamics, the source noise parameters, and the propagation effects.