Rocket Propulsion Elements, 9th Edition

CHAPTER 21ROCKET TESTING

21.1 TYPES OF TESTS

Before any rocket propulsion systems are put into operational use, they are subjected to several different types of tests, many of which are outlined below in the approximate sequence in which they are normally performed.

1. Manufacturing inspection and fabrication tests on individual parts (dimensional inspection, pressure tests, X‐raying, leak checks, electric continuity tests, electromechanical checks, etc.). These tests are usually done at the factory.
2. Component tests (functional and operational on igniters, nozzles, insulation, valves, controls, injectors, structures, tanks, motor cases, thrust chambers, turbopumps, thrust‐vector control, etc.). May need special equipment/facilities.
3. Static rocket propulsion system tests (with complete propulsion system) on a test stand: (a) complete propulsion system tests (under rated conditions, off‐design conditions, with intentional variations in environment or calibration); (b) with liquid propellants a partial or simulated rocket operation (for proper function, calibration, ignition, operation—often without establishing full thrust or operating for the full duration); for reusable or restartable rocket propulsion systems this can include several starts, long‐duration endurance tests, and postoperational inspections and reconditioning; (c) some tests on chemical propulsion systems and nearly all tests on electrical propulsion systems are performed in large vacuum facilities that simulate the ...