Digital High-Speed Imaging Technologies-Hypersonic Wind Tunnel

Period of Performance: 09/20/2000 - 09/20/2002

$750K

Phase 2 SBIR

Recipient Firm

Princeton Scientific Instruments, Inc.
7 Deer Park Drive,, Suite C
Monmouth Junction, NJ 08852
Principal Investigator

Research Topics

Abstract

Evaluating the performance of new hypersonic wind tunnel technologies will require high speed diagnostics to follow high frequency effects associated with the fluctuations in the high speed flows. The diagnostic instrument needs to provide (a) high energy laser pulses with a few tens of nanosecond pulse width at megaHertz repetition rates, and a pulse bursts in the range of 30 to 100 pulses per burst, and (b) a digital camera/recording system capable of producing high quality images that give spatial information on flow properties such as density and capable of following shock wave and boundary layer fluctuations. An imaging system capable of digitally imaging flows at MHz frame rates has been demonstrated in Phase I. The proposed pulse burst laser and Ultra-High-Frame Rate CCD camera system can be used in conjunction with various laser diagnostic techniques including Rayleigh scattering, laser induced fluorescence, shadowgraphs, and Schlieren techniques.