INCH-POUND
MIL-H-5440H
25 May 1993
SUPERSEDING
MIL-H-5440G
28 NOV 1975
MILITARY SPECIFICATION
HYDRAULIC SYSTEMS, AIRCRAFT, DESIGN AND INSTALLATION
REQUIREMENTS FOR
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 scope. This specification covers the design and installation
requirements for Types I and II aircraft hydraulic systems.
1.2 Classification. Aircraft hydraulic systems shall be of the following
types and classes, as specified:
1.2.1 Types.
Type I
Maximum fluid operating temperature +160Y°F (+71°C).
Type II
Maximum fluid operating temperature +275°F (+135°C).
1.2.2 Classes.
The class of operating pressure shall consist of the
following:
a.
Class 1500.
1500 psi nominal operating pressure
b.
class 3000.
3000 psi nominal operating pressure
c.
class 4000.
4000 psi nominal operating pressure
d.
class 5000.
5000 psi nominal operating pressure
e.
Class 8000.
8000 psi nominal operating pressure
Beneficial comments (recommendations, additions, deletions) and any perti-
nent data which may be of use in improving this document should be addressed
to: Commanding Officer, Naval Air Warfare Center Aircraft Division Lake-
hurst, Systems Requirements Department, Code SR3, Lakehurst, NJ 08733-5100,
by using the self-addressed Standardization Document improvement Proposal
(DD Form 1426) appearinq at the end of this document or by letter.
AMSC N/A
FSC 1650
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
Downloaded from http://www.everyspec.com
