FLUIDIC RELIABILITY.
Abstract
The objective of this contract was to develop quantitative information concerning the reliability and maintainability of hydraulic fluidic components and systems. This was accomplished by testing a feasibility-model hydraulic single-axis stability augmentation system (SAS) under conditions simulating actual flights of a UH-1B helicopter and, along with 15 of each type of component making up the SAS, life testing under environmental conditions of 0.5-g and 2.0-g vibration, temperature from -30F to +200F, and cycling of the component input signals. Also tested were 15 bistable amplifiers. The components were divided into environmental and nonenvironmental groups, with the environmental group divided into groups subject to 50-micron oil and 10-micron oil. This made up the 15 components, five in each of the three groups. The feasibility SAS and the components making up the SAS completed the testing with no failures. While the bistable amplifiers did not meet the failure limits, they still had enough gain to switch another like amplifier. The results of this program show that fluidic components and systems are very reliable. Since fluidic components appear to fail only in a wearout mode, more components should be tested for longer periods of time to determine their life and how they fail.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1968
- Accession Number
- AD0674222
Entities
People
- Darroll Bengston
- Eugene Peterson
- Harvey Ogren
Organizations
- Honeywell International, Inc.