Electrical Ignition of HAN-Based Liquid Propellants
Abstract
The feasibility of arcless ignition in a 2 cm3 igniter element was demonstrated in a vented chamber and in a 30-mm regenerative liquid propellant gun. The igniter consists of a center electrode separated from a more or less conically shaped vented outer electrode by a hollow cylindrical insulator. Simple steady-state potential field calculations were used to optimize the electrode and cavity geometries. The energy transfer to the igniter is determined mainly by polarity, electrode surface area and charge voltage. Stronger confinement of the liquid propellant igniter charge will accelerate the ignition process. Scanning electron microscopy (SEM) and x-ray microanalysis show that ignition is affected by the chemical and physical characteristics of the electrode surface. Preliminary tests with multi-channel IR-spectrometry for recording the transient ignition reactions were also performed. Keywords: Guns; Liquid monopropellants; Electrical ignition; Combustion; HAN; Regenerative.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1990
- Accession Number
- ADA226314
Entities
People
- G. Klingenberg
- H. J. Frieske
- H. Rockstroh