EVALUATION OF THE ELECTRICALLY CHARGED NOZZLE CONCEPT.
Abstract
A problem which exists in the rocket industry today is the erosion of nozzle materials and the counter problem of the buildup of combustion products in nozzles. The theory exists that a possible means of alleviating this problem is the application of an electric charge to the nozzle. Such an applied charge could repel the charged particles in the exhaust stream and prevent their sticking and eroding the nozzle. Test firings have been made at the 100-lb thrust level using both actual charged nozzles and probes inserted in the nozzle. Three propellant combinations have been tested: chlorine trifluoride/hydrazine, chlorine trifluoride/sodium borohydride-hydrazine (1), and nitrogen tetroxide/aluminum emulsion. The test data show that the application of electric charges to nozzles does have an effect on nozzle erosion or buildup with the propellants tested. The data further indicate that the applied electric charges may affect the delivered specific impulse. These results are presented in detail. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1966
- Accession Number
- AD0487729
Entities
People
- Jerry M. Hobbs
Organizations
- Air Force Research Laboratory