EXPERIMENTAL RESEARCH OF SHOCK WAVE PERTURBATIONS TO OBTAIN VEHICLE VELOCITY. PHASE II.
Abstract
Experimental research in the generation, propagation and detection of ion density waves in a high velocity plasma is described. This work has been directed toward velocity measurement of the high speed plasma; in particular, the high-speed, shock excited plasma obtained upon hypersonic reentry into the earth's atmosphere. Ion density waves have been introduced into the plasmas by means of high intensity pulsed magnetic fields and have been observed by mechanical, microwave, electrostatic and optical probes. The properties governing the magnetic generations of the above described waves have been studied by varying the magnetic geometry pulse duration, rise time, and field intensity. Experimental work reveals that the plasma interaction magnitude varies as the fourth power of the magnetic field intensity rather than the assumed second power, and displays a threshold at approximately 350 gauss. Comparison of the various detector probes indicates the electrostatic probe, which works on a capacitive principle, to be the apparent best choice for applications to aerodynamic hardware. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0428844
Entities
People
- J. R. Rochester