Digital Schlieren Photography

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9200-07-C-0163
Agency Tracking Number: F071-338-3197
Amount: $99,978.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: AF071-338
Solicitation Number: 2007.1
Small Business Information
DUNS: 167299465
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Gardner
 Principal Investigator
 (719) 598-6006
Business Contact
 David Gardner
Title: President
Phone: (719) 598-6006
Research Institution
While conventional framing cameras can be used for Schlieren photography, there is a constant struggle to reduce exposure times to a low enough value which will yield images of acceptable sharpness. Since the resolution of the final image is a function of the object motion and the exposure time, large velocities with respect to the focal plane require correspondingly short exposure times in order to resolve detail in the object. Synchroballistic photography is frequently used to overcome this problem by making the image pass over an open slit while at the same time the recording film passes below the slit at the same speed as the image. The Holloman High Speed Test Track currently uses film-based techniques to create Focusing Schlieren photos of high speed rocket sleds. Since film processing creates environmental waste, and because film manufacturing is gradually being phased out, this capability needs to be replaced with a digital solution. Salvador Imaging proposes the development of a solid-state, synchroballistic imaging camera which provides 3000x1 images with exposure times as low as 200ns per line. Salvador will make use of an existing camera under Phase I to demonstrate operation of a lower resolution array at the proposed 200ns rate.

* Information listed above is at the time of submission. *

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