Ultrasonic method of gun gas detection
Abstract
Gun gas, which is the product of combustion of the propellant used in ammunition rounds, contains significant amounts of carbon monoxide and hydrogen. The gas is, therefore, potentially explosive. Aircraft gun installations utilize, therefore, gun gas detection systems to prevent a hazardous buildup of the gas. The currently employed detection systems have certain disadvantages. A sensing system has, therefore, been developed which is free from these disadvantages. The new system functions by detecting changes in the propagation velocity of sound, which can be related to the percent by volume of gun gas present if the molecular weight of gun gas is known and if it differs significantly from that of ambient air. Tests have demonstrated the capability of the developed gas sensing system to perform reliably in an airborne environment, providing reasonable qualitative performance.
- Publication:
-
Society of Flight Test Engineers
- Pub Date:
- August 1977
- Bibcode:
- 1977sfte.symp.....G
- Keywords:
-
- Acoustic Velocity;
- Aircraft Hazards;
- Flammable Gases;
- Gas Detectors;
- Molecular Weight;
- Ultrasonics;
- Acoustic Velocity;
- Ammunition;
- Carbon Monoxide;
- Guns (Ordnance);
- Hydrogen;
- Instrumentation and Photography