Aircraft Hydraulic Systems Dynamic Analysis
Abstract
This report describes the development and verification of four computer programs used to simulate hydraulic systems under dynamic conditions. The programs were developed by McDonnell Douglas Corp. under contract with the Air Force. The Hydraulic Systems Frequency Response (HSFR) program predicts the ripple in the flow from piston-type pumps and shows how it is transmitted and attenuated through the system. It predicts the resonant frequencies and the locations and amplitudes of the standing waves of the oscillatory flow and pressure. The Steady-State Flow Analysis (SSFAN) program defines the system flow and pressure distribution resulting from the simultaneous operation of actuator devices under any combinations of loads and rates. The Hydraulic Transient Analysis (HYTRAN) program simulates the dynamic response of a system to sudden changes in load flow demand. The typical input to the system is a valve motion from which pressure and flow disturbances propagate through the system, causing pump and component responses. The Hydraulic Transient Thermal Analysis (HYTTHA) program predicts the effects of system heat generation and dissipation of the temperatures and performance of a hydraulic system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1977
- Accession Number
- ADA050907
Entities
People
- G. E. Amies
- J. B. Greene
- N. J. Pierce
- R. J. Levek
Organizations
- McDonnell Aircraft Corporation