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8000 psi Hydraulic Systems: Experience and Test Results
- Aerospace Standard
Published November 15, 2012 by SAE International in United States
Downloadable datasets availableAnnotation ability available
Shortly after World War II, as aircraft became more sophisticated and power-assist, flight-control functions became a requirement, hydraulic system operating pressures rose from the 1000 psi level to the 3000 psi level found on most aircraft today. Since then, 4000 psi systems have been developed for the U.S. Air Force XB-70 and B-1 bombers and a number of European aircraft including the tornado multirole combat aircraft and the Concorde supersonic transport. The V-22 Osprey incorporates a 5000 psi hydraulic system. The power levels of military aircraft hydraulic systems have continued to rise. This is primarily due to higher aerodynamic loading, combined with the increased hydraulic functions and operations of each new aircraft. At the same time, aircraft structures and wings have been getting smaller and thinner as mission requirements expand. Thus, internal physical space available for plumbing and components continues to decrease.
This document has been determined to contain basic and stable technology which is not dynamic in nature.
|Aerospace Standard||Recommendations for Installation of Seals in Standard Glands|
|Aerospace Standard||Accumulator, Hydraulic, Welded Bellows, Factory Pre-Charged|
Data Sets - Support Documents
|TABLE 1||MIL-H-83282 and MIL-H-5606 Comparison|
|TABLE 2||Recommended Rod Seal Configuration|
|TABLE 3||Seal Test Summary - At 900 h of Operation LHS Simulator - Navy|
|TABLE 4||Seal Test Summary - Air Force|
|TABLE 5||Pressure Level Selection|
|TABLE 6||Stabilator Actuator Fluid Velocity|
|TABLE 7||Design Margins|
|TABLE 8||Proof and Burst Design Factors|
|TABLE 9||8000 psi System Safety Factors|
|TABLE 10||Current Systems Safety Factors|
|TABLE 11||Tubing Design Margins|
|TABLE 12||Stress Comparisons|
|TABLE 13||Titanium Tubing Sizes|
A-6A2 Military Aircraft Committee
The Military Aircraft Panel is responsible for the development of standards and recommended practices related to the integration of fluid power and actuation technologies into military air vehicles. The panel provides a forum for government engineers, prime contractors, suppliers, and fleet support representatives to exchange technical information and discuss regulatory updates, recent technology developments, lessons learned, and issues related to system development and in service operation.
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