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Hampton, VA, United States

Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 49.96K | Year: 1988

N/A


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 485.29K | Year: 1989

A DESIGN STUDY IS TO BE CARRIED OUT FOR A LIDAR SYSTEM WHICH WILL PROVIDE THREE-DIMENSIONAL MAPPING OF UPPER TROPOSPHERIC AEROSOL AND CLOUD. APPLICATION WOULD BE FOR ALTITUDES UP TO ABOUT 15 KMS AND RANGES OUT TO 30 KM. THE INSTRUMENT WOULD PROVIDE ALTERNATIVE FORMS OF COLOR-CODED REAL-TIME DISPLAY OF AEROSOL BACKSCATTER AND CLOUD POSITION,AS WELL AS STORE DATA FOR SUBSEQUENT STUDY AND ANALYSIS. THE SYSTEM WOULD SCAN THE COMPLETE SKY, USING EITHER A BIDIRECTIONAL SCANNING TECHNIQUE OR A UNIDIRECTIONAL SCANNING TECHNIQUE EMPLOYING A MULTIPLE BEAM SYSTEM. THE TOTAL STUDY IS DIVIDED INTO THREE PHASES OF WHICH PHASE I--SYSTEM DESIGN STUDY FORMS THE SUBJECT OF THE PRESENT PROPOSAL. THIS WILL INCLUDE AN INDEPTH STUDY OF THESCIENCE NEEDS AS WELL AS OF CURRENT TECHNOLOGY. THE PRODUCTOF THE THREE-PHASE PROGRAM WOULD BE PROTOTYPE OPERATIONAL SYSTEM DESIGNED FOR APPLICATION TO THESE NEEDS.


Grant
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 729.74K | Year: 2006

It is proposed to develop an ultra-sensitive person-portable, HERO-safe, GPS-mounted, and internet-ready explosive detector of novel design. It will consist of an ion source based on corona discharge ionization. This source will ionize molecules of explosives present in ambient air. They will then be introduced into a miniature vacuum system through a device, recently developed by the PI, called "Supersonic Pulsed Jet Separator, SPJS" in the form of short bursts, thereby reducing the pumping requirements which make mass spectrometer based instruments bulky, heavy, and power consuming. The ions will be mass analyzed by a miniature time-of-flight mass spectrometer, also recently developed by the PI, and detected by a charged particle detector. During first phase of the proposed work the following has been accomplished: (1) Designed, built, and tested the corona discharge ion source, (2) fabricated the SPJS, (3) tested the combination for its ability to convert molecules present in ambient air into ions, and (4) prepared a conceptual design, based on data obtained during Phase I, of a person-portable detector that will be fabricated during the Phase II of the proposed work. During this phase, a prototype instrument will be built, tested, and characterized in the field.

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