Aircraft Hydraulic System Dynamic Analysis. Volume 4. Frequency Response (HSFR) Computer Program Technical Description

reportActive / Technical Report | Accession Number: ADA038884 | Open PDF

Abstract:

The hydraulic system frequency response HSFR computer program was developed to simulate the dynamic response of a hydraulic system to the acoustic noise generated by the pump. A detailed technical description of the program is presented. For a selected system pressure, temperature, flow, and pump speed range, the program calculates the pulsation pressure and energy levels generated by the pump. It predicts the amplitude and location of the resulting acoustical standing waves, and how these waves are transmitted and attenuated throughout the hydraulic system. The program may be used for acoustical analysis in the pressure side or both the pressure and return sides of the hydraulic system. Estimated line lengths and sizes from preliminary design work give a good estimate of hydraulic system natural frequencies and pressure amplitudes. The program outputs plots of the peak flow, pressure, and impedance amplitudes of any selected harmonic of the pulsation noise versus pump speed for selected locations in the system. In addition, the program outputs plots of total acoustic energy density and intensity power versus pump speed.

Author(s):
Amies, Gerry ; Greene, Bob
Author Organization(s):
MCDONNELL DOUGLAS CORP ST LOUIS MO
Descriptive Note:
Interim technical rept.
Supplementary Note:
See also Volume 5, ADA038611.
Pagination:
0204

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFAPL-TR-76-43-VOL-4
Contract/Grant Number(s):
F33615-74-C-2016
Task Number(s):
30
Project Number(s):
3145
Monitor Series:
TR-76-43-VOL-4, AFAPL
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_1_Force Support; JCA_1.3_Human Capital Management; JCA_1.3.2_Personnel Management; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_5.2.3_Share Knowledge and Situational Awareness; JCA_5.2_Understand; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_1.2_Force Preparation
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*COMPUTER PROGRAMS, *FREQUENCY RESPONSE, *HYDRAULIC EQUIPMENT, *HYDRAULIC PRESSURE PUMPS, AIRCRAFT EQUIPMENT, FLUID FLOW, FOURIER ANALYSIS, INPUT, MATHEMATICAL MODELS, NOISE(SOUND), OUTPUT, SUBROUTINES, SYSTEMS ANALYSIS
Field(s)/Group(s):
Aircraft, Computer Programming and Software, Hydraulic and Pneumatic Equipment
Keyword(s):
HSFR(HYDRAULIC SYSTEM FREQUENCY RESPONSE), PUMP RIPPLE, PE62203F, WUAFAPL31453018
Report Date:
1977 Feb 01