Coupled Rotor/airframe Vibration Analysis PDF Download
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Author: Shmuel Fledel
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
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Book Description
Author: Shmuel Fledel
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
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Author:
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 212
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Book Description
Author: Tung-Kuang Hsu
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 332
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724761637
Category :
Languages : en
Pages : 30
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Book Description
User instructions for a graphics package for coupled rotor/airframe vibration analysis are presented. Responses to plot package messages which the user must make to activate plot package operations and options are described. Installation instructions required to set up the program on the CDC system are included. The plot package overlay structure and subroutines which have to be modified for the CDC system are also described. Operating instructions for CDC applications are included. Studwell, R. E. Unspecified Center NASA-CR-165897, NAS 1.26:165897 NAS1-16058
Author: TUNG-KUANG HSU
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
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Author: Robert Sopher
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 214
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This report describes a Coupled Rotor/Airframe Vibration Analysis which was developed as a design tool for predicting helicopter vibrations, and a research tool to quantify the effects of structural properties, aerodynamic interactions and vibration reduction devices on vehicle vibration levels. The analysis consists of a Base Program utilizing an impedance matching technique to represent the coupled rotor/airframe dynamics of the system supported by inputs from several External Programs supplying sophisticated rotor and airframe aerodynamic and structural dynamic representation. The Base Program has a stand-alone capability to provide assessment of the effects of changes in airframe dynamics and vibration reduction devices on vehicle vibration levels. The Base Program is too restricted in input support from any particular programs and can be executed interactively from any particular programs and can be executed interactively for many pertinent applications.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723548345
Category :
Languages : en
Pages : 228
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The formulation and features of the Rotor-Airframe Comprehensive Analysis Program (RACAP) is described. The analysis employs a frequency domain, transfer matrix approach for the blade structural model, a time domain wake or momentum theory aerodynamic model, and impedance matching for rotor-fuselage coupling. The analysis is applied to the AH-1G helicopter, and a correlation study is conducted on fuselage vibration predictions. The purpose of the study is to evaluate the state-of-the-art in helicopter fuselage vibration prediction technology. The fuselage vibration predicted using RACAP are fairly good in the vertical direction and somewhat deficient in the lateral/longitudinal directions. Some of these deficiencies are traced to the fuselage finite element model. Sangha, K. and Shamie, J. Unspecified Center NASA-CR-181974, NAS 1.26:181974 NAS1-17498; RTOP 505-63-51-01...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
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