Preparation and purification of N.sub.2 O.sub.4 containing rocke

Details Preparation and purification of N.sub.2 O.sub.4 containing rocke Preparation and purification of N.sub.2 O.sub.4 containing rocke

1981-10-26

1984-11-27

Miller, Edward A.

Explosive and thermic compositions or charges

Containing nitrogen oxide or acid thereof

60214, 210737, C06B 4704

Patent

active

044849613

ABSTRACT:
There is disclosed a process and apparatus whereby typically furnished commercially nitrogen tetroxide propellants for rocket engines may be upgraded to decrease flow decay problems and to increase the shelf life of the product; thereby providing for longer duration trouble-free rocket engine performance. The raw MON material is initially converted if necessary to the "Red" type; dissolved iron salts and other dirt particulates are removed by cooling and filtering, and thenceforth throughout the process the material is filtered at each transfer operation. Specific apparatus arrangements are provided for facilitating the process and the end product is of increased purity; whereby upon being furnished to an engine for test or vehicle launching purposes the program may proceed as scheduled and the vehicle may be maintained in space for a longer period of time.

REFERENCES:
patent: 2355817 (1944-08-01), Morrow
patent: 3507717 (1970-04-01), Dubb et al.
patent: 3534554 (1970-10-01), Allan et al.
patent: 3536543 (1970-10-01), Hess
patent: 4144092 (1979-03-01), Krepler
Wright, "Nitric Acid/Nitrogen Tetroxide Oxidizers", vol. II of USAF Propellant Handbooks, AFRPL-TR-76, pp. 1-7, 2.3-1, 2.3-1.5, 3-(26-28), 3-(32-33), 3-(40-41), 3-45, (Feb. 1977).
Addison, "Flow Decay" (Final Scientific Report), AFRPL-72-84, pp. (Summary), 101-104, 109, 115-117, 120-124, 126, 132, 133, 135, 136, 139, (6-1962).
Sinor et al., "N.sub.2 O.sub.4 /IRFNA Conference, Abstracts and Slides", pp. iii-iv, 7-14, and 41-45, CPIA Publ. No. 171, (Jul. 1968).

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