A Novel Technique to Stimulate the Flow in a Solid Propellant Rocket.
Abstract
An experimental study has been carried out to investigate the occurrence of acoustically generated turbulence and the possible role of this turbulence in the velocity coupling phenomenon that is believed to occur in some acoustically unstable solid propellant rocket motors. A new technique has been developed to carry out this investigation. The burning propellant is simulated by subliming dry ice. This simulation allows relatively long run times and ease of instrumentation as compared to using actual propellants. The technique also reduces the possibility of turbulence being generated by the injection process in a cold flow simulation. Subliming dry ice also has a positive pressure exponent, similar to, but weaker than, an actual propellant. In the experiment a small section of dry ice is contained in a closed tube approximately two meters long which is equipped with a mechanically driven piston at one end. This piston is used to produce strong pressure and velocity waves which propagate over dry ice.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1991
- Accession Number
- ADA240792
Entities
People
- K. Chen
- Nageswara S.V. Rao
- R. W. Shorthill
- W. K. Van Moorhem
- Yiping Ma
Organizations
- University of Utah