1. Summary of gaseous nuclear rocket fluid mechanics research
2. Travers, A.: Experimental Investigation of Peripheral-Wall Injection Techniques in a Water Vortex Tube. United Aircraft Research Laboratories Report 0-910091-7, prepared under Contract NASw-847, September 1965. To be issued asNASA CRreport.
3. Travers, A.: Experimental Investigation of Flow Patterns i n Radial-Outflow Vortexes Using a Rotating-Peripheral-Wall Water Vortex Tube. United Aircraft Research laboratories Report F-910091-10, prepared under Contract NASw-847, May 1967. Also issued asNASA CR-991, February 1968.