Hydraulic Circuit Breaker for Aircraft Hydraulic Systems
Abstract
Automatic failure isolation in aircraft hydraulic systems, to reduce the probability of a single hit causing the loss of the complete system, can be accomplished by a number of methods. Reservoir level sensing (RLS), senses a loss of fluid from the total system, and initiates a search for the failed subsystem. Flow sensing and comparison senses a loss of fluid from the subsystem, and shuts off the supply. Subsystem isolation allows transfer of power but prevents fluid transfer between the system and subsystem. Miscellaneous methods enable a loss of fluid to be sensed and shut off. In addition, there are several combinations of concepts that are attractive. The first phase of the program has been carried out. The object of this part of the program was to collect and tabulate all the available data related to the subject from government and industry sources. The tabulated data was then used to compare the various techniques with the requirements for F-4 and F-15 type aircraft in the second phase of the study. A decision has been made as to which techniques merit further investigation. The best concept from each of the three basic categories (RLS, Flow Comparison, Isolation) was selected. Working prototypes for experimental verification of analytical predictions are being procured and will be evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1969
- Accession Number
- AD0859537
Entities
People
- Charles T. Thurston
- Gerald E. Amies
- Neil J. Pierce
- Robert S. Andrews
Organizations
- McDonnell Aircraft Corporation