INVESTIGATION OF A 30,000-RPM TURBINE-SPEED HYDRAULIC PUMP.
Abstract
The general objective of the research program was to develop technology for high-temperature hydraulic pumps capable of being directly driven at bleed-air or auxiliary-power-unit turbine speeds. The specific goal was a pressure-compensated hydraulic pump rated at 4000 psi with a rated flow of 50 gpm at 30,000 rpm. The pump was to operate with a chlorinated silicone fluid with inlet temperatures to 600 F. A two-lobed vane pump having pivoting-tip vanes, a deformable cam ring, and rotor length approximately twice rotor diameter was the concept selected for development. Critical experiments were conducted to qualify the pivoting-tip vanes. Deformable cam rings were fabricated using several techniques. Special fabrication techniques were developed for the vanes and tips because of the small sizes involved. A 0.42 in./revolution pump was fabricated and operated at speeds to 30,000 rpm with a petroleum-base hydraulic fluid. The vane and tip, cam ring, and rotor concepts have been confirmed. The turbine-speed pump has many potential applications because of its high speed, light weight, and compactness. Continued developmental effort is needed to improve cam-ring fabrication techniques, further establish efficiency characteristics, and establish durability. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1968
- Accession Number
- AD0834312
Entities
People
- David L. Thomas
- John P. Wilcox
- Robert K. Mitchell
Organizations
- Battelle Memorial Institute