Study/Test Program to Evaluate the Effects of High Temperature Hydraulic Fluid on T-38 Control Surface Servovalves,
Abstract
The test program included the following objectives: Conduct temperature survey on an instrumented T-38 aircraft, including a malfunction pump condition. Determine pilot corrective procedure; Simulate aircraft thermal environment on Northrop Hydraulic System Test Stand; Establish repeatable test techniques; Test servovalves having lap leakages of 3, 15, and 40 cc/min - approximately four valves; Correlate valve spool force and control stick force to lap leakage variation; Rework tight valves and retest to verify lap leakage criteria.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1971
- Accession Number
- AD0734259
Entities
People
- L. J. Mitts
- R. A. Bartens