Flow Control for Enhanced Sensor Beam/Directed-Energy (DE) Beam Quality

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-04-M-3426
Agency Tracking Number: F041-244-1791
Amount: $99,905.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solitcitation Year: 2004
Solitcitation Topic Code: AF04-244
Solitcitation Number: 2004.1
Small Business Information
2766 Indian Ripple Rd, Dayton, OH, 45440
Duns: 884812025
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Sivaram Gogineni
 Sr. Engineer & Dir. of Marketing
 (937) 255-2432
Business Contact
 Larry Goss
Title: President
Phone: (937) 429-4980
Email: gosslp@innssi.com
Research Institution
Conventional adaptive optic systems used on terrestrial telescopes are very slow, and not suitable for aero-optic corrections due to boundary layer turbulence on high-speed vehicles. For high-speed vehicles, the most critical need is to find effective and accurate methods for making these corrections, especially at transonic speeds where most applications reside. In this speed regime, currently available instrumentation can be used to obtain statistical measures of aero-optic distortion, but these measures have recently (Cicchiello and Jumper, 1997) been shown to underestimate the far-field effects of the distortion by orders of magnitude. It is therefore important to capture real-time wavefront data and calculate the far-field effects directly. To achieve this aim, high-speed measurements of wavefront distortion in two dimensions are needed, coupled with new high-speed adaptive optics. We propose to address the quantitative, time-resolved measurement of 2-D wavefront distortion caused by these fluctuations as a first step in finding a way to reduce or correct for wavefront distortion at high speeds. Specifically, we intend to: (a) develop a 2-D kHz rate wavefront analyzer for high subsonic Mach numbers; (b) make quantitative, real time measurements of wavefront distortion in high subsonic Mach number turbulent boundary layers; and (c) perform computer modeling of the measured wavefront distortion as a tool to study the design of adaptive optics suitable for this flow regime.

* information listed above is at the time of submission.

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