Accession Number : AD0463911


Title :   THE RADIOLYTIC DECOMPOSITION OF MONOMETHYLHYDRAZINE ROCKET FUEL


Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA


Personal Author(s) : Shelberg, W E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/463911.pdf


Report Date : 05 Apr 1965


Pagination or Media Count : 22


Abstract : Investigations were made of the possibility of suppressing the generation of noncondensable gases when monomethylhydrazine (MMH) rocket fuel is subjected to ionizing radiation. MMH produces more than twice its volume of gas (measured at 25 C and 1 atm.) consisting of hydrogen, nitrogen and methane when irradiated to nearly 10 to the 7th power rads with gamma rays. An attempt at gas suppression was made with chemical additives that could render freeradicals impotent by reacting with them. Two normally efficient olefinic additives (freeradical scavengers) failed to suppress gas evolution, thereby demonstrating that MMH does not decompose radiolytically via free-radical intermediates. Instead, it decomposes via a molecular or ionic process. The addition of carbon tetrachloride as a potential, gassuppressing additive actually increased gas evolution enormously, and this is explainable on the basis that it initiates a chemical chain reaction.


Descriptors :   *ADDITIVES , *STABILITY , RADIATION EFFECTS , ALKENES , CARBON TETRACHLORIDE , FREE RADICALS , LIQUID ROCKET FUELS


Subject Categories : Theoretical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE