Pulsed Laser Holographic Tomography Velocity Sensor System Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-029 Topic Title: Pulsed Laser Holographic Tomography Velocity Sensor System Proposal No.: N091-029-0703 Firm: Physical Optics Corporation Photonic Systems Division 20600 Gramercy Place, Bldg. 100 Torrance, California 90501 Contact: Tin Aye Phone: (310) 320-3088 Web Site: www.poc.com Abstract: To address the Navy need for an innovative approach to measure three-component airflow velocity in the vicinity of a full-scale helicopter, Physical Optics Corporation (POC) proposes to develop a new Pulsed Laser Holographic Tomography Velocity Sensor (PLAHTOV) system. The proposed system is based on high-speed, time-sampled full-field double-pulsed laser holographic recording and tomography interferogram processing to generate the instantaneous 3D flow field velocity data. The innovation in the use of double-pulsed laser holographic tomography with the novel use of high-speed real-time holographic recording system will enable the PLAHTOV to measure the three-component airflow velocities of very large flow field. As a result, this sensor system offers high precision data over a continuous full-filed large flow volume without electromagnetic interference (EMI) or intrusion by sensing elements, with high spatial/temporal resolution (2 cm/5 kHz), which directly address the Navy PMA-275 and V-22 Joint Program Office requirements. In Phase I, POC will demonstrate the feasibility of PLAHTOV measurement system by system design, performance analysis, and laboratory experiments leading to a demonstration prototype. In Phase II, POC plans to develop and build a full-scale prototype system to measure the downwash in the vicinity of a helicopter hovering near a vertical face. Benefits: The proposed PLAHTOV sensor system will have numerous military applications, including aerodynamic testing of weapon systems, vehicles, missiles, and airplane designs. This technology will also benefit many commercial applications, including structural design of safer and better performing automobile, aircraft, boats, and building, study of the effect of helicopter rotor downwash on personnel and equipments at airports, off-shore installations and building helipads, as well as medical imaging and analysis of fast processes. Return