MICROWAVE TECHNIQUES APPLICABLE TO SHOCK TUBE MEASUREMENTS.
Abstract
Several microwave techniques for the measurement of aerodynamic and electromagnetic properties of the flow fields in shock tubes are presented. In particular, microwave techniques applicable to the measurement of shock velocity, running time and electron density are discussed. By using the driven section of the shock tube as a wave guide which is excited by a single microwave antenna, simultaneous measurements of shock velocity attenuation and running time are obtained. The results of the running time measurements using the microwave method are compared with other diagnostic techniques. Measurements of electron densities are conducted with microwave resonant cavities. Two specific cavity arrangements are presented which are used to measure a wide range of electron densities corresponding to plasma frequencies below and above the resonant frequency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1964
- Accession Number
- AD0460172
Entities
People
- Manlio Abele
- Marian Visich Jr.
- Samuel Lederman
Organizations
- New York University Tandon School of Engineering