Accession Number:

AD0266317

Title:

THE PNEUMATIC ENERGY DETECTOR WITH REMOTE OPTICS (PEDRO)

Descriptive Note:

Corporate Author:

RANDOLPH-MACON COLL ASHLAND VA

Personal Author(s):

Report Date:

1961-10-15

Pagination or Media Count:

1.0

Abstract:

A new instrument is described to measure, for hazards evaluations, the thermal energy produced in the bridgewire of an electroexplosive device by the reception of radiated electromagnetic energy. The device, the pneumatic energy detector with remote optics PEDRO, employs fiber optics techniques to sense by a schlieren method the deformation of an elastic mirrored diaphragm that is distended by the expansion of a small volume of gas heated by the t ermal output of the excited bridg wire. Electrical coupling between he ins rumenta ion and he weapon under test is minimized by conveying the information output from the simulated electroexplosive device to the photodetector and recorder as an intensity modulated light signal through a dielectric light pipe composed of a bundle of optical fibers. Initial efforts in a feasibility study of this device are reported. Included are discussions of optical, thermal, and echanical design crit ria. E XPERIMENTAL ORK ON FABRICATION AND EVALUATION OF THE MIRRORED DIAPHRAGMS IS REPORTED. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE