Variable flow gas generator
Award last edited on: 9/10/2002

Sponsored Program
Awarding Agency
DOD : Navy
Total Award Amount
Award Phase
Solicitation Topic Code
Principal Investigator
Michael Jacobson

Company Information

Ramcor Inc

800 Follin Lane
Vienna, VA 22180
   (619) 446-3502
Location: Single
Congr. District: 11
County: Fairfax

Phase I

Contract Number: N60530-88-C-0160
Start Date: 2/10/1988    Completed: 00/00/00
Phase I year
Phase I Amount
A variable flow gas generator is desired to meet present and future requirements for primary missile power supplies variable flow solid propellant gas generators can offer significant improvements in packaging volume when compared with constant flow devices the principle advantage is that the flow rate can be adjusted to match the average gas flow, rather than the peak flow. There are three techniques by which the flow rate cam be modified: accumulator effect, mass addition and flow restriction. The accumulator effect is the result of expansion of pressurized gases in the gas generator volume. The mass addition is based on injection mass, either solid, liquid or gas, into the burning volume. Restricted flow is based on the fact that gas generators will burn at a faster rate at the elevated pressure induced by restricting the exhaust flow. An important part of the task is an analysis of the flow requirements. This would include effective modeling of the various flow control techniques as well as the stability of the flow control mechanisms. Preliminary studies indicate that an approximate 70% reduction in gas generator volume can be achieved by using a demand flow system.

Phase II

Contract Number: N60530-88-C-0160
Start Date: 2/10/1988    Completed: 00/00/00
Phase II year
Phase II Amount
Modern Navy tactical missiles require an ever increasing electrical power level in smaller more light weight packages. This is particularly the case for missiles that use active rf guidance and electrical fin control actuators. Gas generator driven turbo alternators show promise of meeting these advanced power supply requirements with significantly improved performance relative to thermal batteries. In order to meet these performance goals, both the turbine and gas generator must have high performance. Studies and research conducted in Phase I of this effort shows that it is possible to use conventional gas generators and control techniques to provide variable flow rate. This technology can be used to match the gas generator flow to the power demand of the system to limit waste of the gas generator output. This Phase II effort is proposed to continue the investigation of controlled variable flow gas generators and to conduct the sub system integration and testing of a variable power supply subsystem. The state of technology in several critical areas will be totally assessed with respect to controlling the gas generator flow. The required interface will be resolved so that the components can be assembled and tested.