Diffuser-ejector system for a very high vacuum environment

Patent · Tue Jun 19 04:00:00 EDT 1984

OSTI ID:6470311

Riggs, K E

A system for testing space engines at sea level under a very low pressure environment. The system includes a space simulation chamber connected to a diffuser, which has two variable area ratio ejectors connected to it in tandem. Each of the ejectors is driven by a jet engine, preferably a turbo jet. The system is capable of providing a low pressure environment of about three or four millimeters of mercury for testing of engines mounted in the space simulation chamber. The system also may be used for other purposes requiring very high vacuum, such as evaporation and dehydration of food products or drugs.

• Assignee: Adm. of the National Aeronautics and Space Adm.
• Patent Number(s): US 4454753
• OSTI ID: 6470311
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
ANALOG SYSTEMS
DESIGN
ELEMENTS
ENGINES
FUNCTIONAL MODELS
LEVELS
MERCURY
METALS
PERFORMANCE TESTING
PRESSURE DEPENDENCE
ROCKET ENGINES
SEA LEVEL
SIMULATION
SIMULATORS
SPACE
SPACE VEHICLES
TESTING
TURBOJET ENGINES
VACUUM STATES
VEHICLES