Accession Number : ADA190687

Title :   Process for Assessing the Stability of HAN (Hydroxylamine)-Based Liquid Propellants.

Descriptive Note : Interim rept. no. 2 for period ending 9 Jun 87,

Corporate Author : FRAUNHOFER-INST FUER TREIB- UND EXPLOSIVSTOFFE PFINZTAL-BERGHAUSEN (GERMANY F R)

Personal Author(s) : Hansen, R ; Backof, E ; Greiff, H J de

PDF Url : ADA190687

Report Date : 29 Jul 1987

Pagination or Media Count : 36

Abstract : The second Interim Report deals with the quantitative chemical analysis of monergol liquid propellants based on HAN. This included the components HAN (hydroxylamine), IPAN (Isopropylammonium nitrate), TEAN (triethanolammonium nitrate), AN (ammonium nitrate) and free nitric acids. As method, volumetric analysis (titration) with potentiometric (electrochemical) indication was selected. For our measurements we used the 'Titroprozessor 636' (a microprocessor system) from Messrs. Metrohm AG (CH 9100 Herisau, Switzerland. We used water as solvent for the samples (i.e. no organic solvents). The propellant components were to be determined by immediate (simultaneous) titration in a sample. HAN and AN had to be converted to derivates (acetoxim and hexamethylene tetramine) as the case arose. Relative error was 0.1 - 0.2% for HAN and 1 - 1.5% for IPAN and TEAN. Nitric acid and AN were only present in small quantities (approx. 1%). The relative error may here reach 25%. Titrations organic solvents were to be carried out and assessed later. Keywords: Liquid propellants, Monergols, Chemical stability, Long term stability, Chemical analysis.

Descriptors :   *LIQUID PROPELLANTS, AMINES, AMMONIUM NITRATE, CHEMICAL ANALYSIS, HYDROXYL RADICALS, ISOMERS, NITRIC ACID, ORGANIC SOLVENTS, PROPELLANTS, PROPYL RADICALS, QUANTITATIVE ANALYSIS, VOLUMETRIC ANALYSIS, STABILITY, TITRATION, COMPUTER AIDED DIAGNOSIS

Subject Categories : Ammunition and Explosives
      Liquid Rocket Propellants
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE