DEVICE FOR GROUND TESTING OF PNEUMATIC SYSTEM OF ELECTRIC ROCKET ENGINE INSTALLATION Russian patent published in 1997 - IPC

FIELD: electric rocket engines. SUBSTANCE: device has at least two electric rocket engines with closed-circuit electron drift, test accessories with recording instruments, and auxiliary dummy plugs installed on each engine in a spaced relation to discharge chamber with gas-distributing anode; each dummy plug is provided with annular insert and flow sensor; annular insert is attached through air-tight joint to inner surface of dummy plug and annular soft-rubber packings are secured to other end. Annular insert is provided with through hole communicating on dummy plug end with flow sensor; insert is placed in engine discharge chamber with radial clearance. Insert end with packing is press-fitted to free end surface of gas-distributing anode so that annular header formed between insert and anode ends communicates via through hole with flow sensor which is connected to recording instrument of test accessories common for each engine. EFFECT: improved design. 1 dwg