Accession Number : AD0699222

Title :   INSTRUMENT FOR MEASURING NONSTATIONARY THERMAL DEFORMATIONS OF OBJECTS IN A GAS FLOW,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bodrova,M. D. ; Ivchenko,D. F. ; Festenshtein,M. S.

Report Date : 03 OCT 1969

Pagination or Media Count : 10

Abstract : A special device allowing the recording and measurement of deformations in an unstable gas stream is described. The device is based on an optical scheme, with an electric spark illumination of the data units and recording of their shifts on photographic film. The gas flows through the inner part of a double-walled cylinder. The outer wall of the cylinder forms an air jacket for temperature control. The optical system used to detect and record deformations is described. Special attachments used in the system include an OT 24-51 oscillograph, a KR-1 induction coil, an MKU-48 electromagnetic relay, and BPVL wiring 1 mm in diameter. A wiring diagram for the device is shown. The report presents a graph illustrating the time variation of deformation of the cylinder wall and temperatures recorded in the test layer during heating and cooling. (Author)

Descriptors :   (*DEFORMATION, MEASURING INSTRUMENTS), (*THERMAL STRESSES, GAS FLOW), RECORDING SYSTEMS, PHOTOGRAPHIC FILM, CYLINDRICAL BODIES, USSR

Subject Categories : Aerodynamics
      Test Facilities, Equipment and Methods
      Fluid Mechanics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE