SAE AIR 4002A:2012-11-15

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.

Author	SAE
Editor	SAE
Document type	Standard
Format	File
Confirmation date	2004-03-01
ICS	49.080 : Aerospace fluid systems and components
Number of pages	87
Replace	SAE AIR 4002:2004-03-18
Set	AEROPAKS10U-10
Year	2012
Document history	SAE AIR 4002:2004-03-18
Country	USA
Keyword	SAE 4002;SAE AIR4002A;SAE AIR4002A;SAE AIR 4002