- Author
- Bragg, K.
- Title
- Parker Reactive Explosion Suppression System (PRESS) Proof-Of-Concept Demonstration. Final Report. March 1989-September 1990.
- Coporate
- Flight Dynamics Directorate, Wright-Patterson AFB, OH
- Sponsor
- JTCG/AS Central Office, Washington, DC
- Report
- WRDC-TR-90-3064, May 1992, 196 p.
- Contract
- F33615-89-C-3400 JTCG/AS-90-T-001
- Keywords
- explosion suppression | fuel systems | ullage | fire protection
- Identifiers
- water dry bay
- Abstract
- This report documents the work performed by the parker Hannifin Corporation for the Flight Dynamics Lab and the JTCG/AS to optimize and perform proof-of-concept tests of the Parker Reactive Explosion Suppression System (PRESS). This innovative system is designed to be installed in aircraft fuel tanks and react to and suppress fuel tank explosions. It consists of an optical detector, transmission lines and a suppression tube(s) containing a water/brine solution. This system is designed to respond within a few milliseconds to engage the flame front and reduce pressures below damage causing levels. After detection, the transmission lines transmit a signal to the suppression tube, which initiates an explosing bridgewire circuit. This, in turn, initiates a detonating cord and propellant internal tube, creating a high pressure expulsion force to expel the adjacent bladder filled with water. The water exits through orifice holes, is transmitted through radial channels in the external nozzles and released as 5-micron-thick sheets. These sheets break up into 10-micron droplets which absorb thermal energy released by the explosion. This process occurs in its entirety within a few milliseconds. The proof-of-concept tests have shown the system to successfully reduce the over pressure created by a 23-mm HEI simulator detonated within an explosive propane air mixture in an experimental tank.