Study of Injection of Helium into Supersonic Air Flow Using Rayleigh Scattering
- Buggele, Alvin E.
- Jan. 1997.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Seaholtz, Richard G.
- hdl.handle.net , Connect to this object online.
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
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- A study of the transverse injection of helium into a Mach 3 crossflow is presented. Filtered Rayleigh scattering is used to measure penetration and helium mole fraction in the mixing region. The method is based on planar molecular Rayleigh scattering using an injection-seeded, frequency-doubled ND:YAG pulsed laser and a cooled CCD camera. The scattered light is filtered with an iodine absorption cell to suppress stray laser light. Preliminary data are presented for helium mole fraction and penetration. Flow visualization images obtained with a shadowgraph and wall static pressure data in the vicinity of the injection are also presented.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19970010253.
Accession ID: 97N15457.
Aerospace Sciences Meeting and Exhibit; 6-10 Jan. 1997; Reno, NV; United States.
- No Copyright.
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