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RECOMMENDED PRACTICE FOR THE DESIGN OF TUBING INSTALLATIONS FOR AEROSPACE FLUID POWER SYSTEMS
- Aerospace Standard
- ARP994
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This document is a compendium of recommended practices for the design of tubing systems for the transmission of liquid and gasses influid power systems for aerospace vehicles such as aircraft, missiles and boosters, and is considered applicable to the design of future space vehicles and other applications using aircraft technology. Primary emphasis is given to recommended practices for line sizing, tube routing, supports and clamping, stress considerations and permissible defects, and provisions for flexure through the use of flexible hoses, coiled tubes, swivel joints, and expansion glands. Fluid power systems are differentiated from the normal aircraft fuel and oil systems and the various fluid systems used for environmental control and air conditioning systems; however, the practices cited herein will in many cases be applicable to these other systems.
A section (3) regarding tubing materials and fitting types currently in use is included for reference, but particular recommendations are purposely avoided since their selection is dependent upon the specific requirements of each particular vehicle system and many other factors.
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Topic
Data Sets - Support Documents
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| TABLE 3-1 | MAJOR PHYSICAL PROPERTIES OF AEROSPACE FLUID POWER SYSTEM TUBING | |
| TABLE 3-2 | ||
| TABLE 3-3 | INSTALLATION TORQUE FOR BOSS FITTINGS | |
| TABLE 3-4 | COMPARISON OF AND10050 and MS33649 FITTING BOSS DEPTHS | |
| TABLE 4-1 | Maximum Laminar Flow for Nominal Tube Sizes MIL-H-5606B or Phosphate Ester at 100 F | |
| Unnamed Dataset 13 | ||
| Unnamed Dataset 14 | ||
| TABLE 5-1 | Maximum Long Term Operating Temperatures - Hydraulic System Materials | |
| Unnamed Dataset 16 | ||
| Unnamed Dataset 17 | ||
| Unnamed Dataset 18 | ||
| TABLE 7-1 | HYDRAULIC LINES SUPPORT SPACINGS | |
| Unnamed Dataset 20 | ||
| TABLE 8-1 | ||
| TABLE 9-1 | SUMMARY OF UNSUPPORTED TUBE LENGTHS AT A NATURAL FREQUENCY OF 200 CPS | |
| TABLE 10-1 | MINIMUM DENT RADII | |
| TABLE 10-2 | PUMP SUPPLY LINE DENT LIMITS | |
| Unnamed Dataset 25 | ||
| TABLE 13-1 | ||
| TABLE 13-2 | IDENTIFICATION SYSTEM COLORS |
Issuing Committee
A6C5 is responsible for the development of standards, processes, and practices for Commercial and Military air vehicle components related to SAE A6 Aerospace Actuation, Control, and Fluid Power Systems. The Panel provides a forum for component users and producers to exchange technical information, regulatory updates, recent technology developments, issues related to system development and in service operation and lessons learned.
Reference
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