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Accession Number:

ADB104860

Citation Status:

Active

Citation Classification:

Unclassified

SBI Site Holding Symbol:

NWCTTR

Field(s) & Group(s):

140400 - PHOTOGRAPHY

190400 - ARMOR

Corporate Author:

TRW ELECTRONICS AND DEFENSE SECTOR REDONDO BEACH CA

Unclassified Title:

Flow Field Instrumentation Development.

Title Classification:

Unclassified

Descriptive Note:

Technical rept. 1 Oct 84-1 Nov 85,

Personal Author(s):

Beach,K.

Kwoh,D.

Wuerker,Ralph F.

Gat,N.

Rungaldier,H.

Report Date:

15 Nov 1985

Media Count:

105 Page(s)

Cost:

$12.00

Contract Number:

DNA001-84-C-0440

Report Number(s):

DNA-TR-85-373

Project Number:

Q93QMXA

Task Number:

G000

Monitor Acronym:

DNA

Monitor Series:

TR-85-373

Report Classification:

Unclassified

Distribution Statement:

Distribution limited to U.S. Gov't. agencies and private individuals or enterprises eligible to obtain export-controlled technical data in accordance with regulations implementing 10 U.S.C. 140c; 3 Dec 85. Other requests must be referred to Director, Defense Nuclear Agency, Washington, DC 20305-1000.

Descriptors:

*DUST CLOUDS, *PHOTOGRAPHIC ANALYSIS, *HIGH SPEED PHOTOGRAPHY, *NUCLEAR EXPLOSION DAMAGE,
NUCLEAR EXPLOSION SIMULATION, SHOCK TUBES, X RAY APPARATUS, STREAK CAMERAS, DENSITOMETERS, CINEPHOTOMICROGRAPHY, MICROSCOPES, HIGH SPEED PHOTOGRAPHY, RADIATION ATTENUATION, SOFT X RAY, SHOCK WAVES

Identifiers:

Rotating Disk Cameras, Microdensitometers, Minor Scale Shot, Lofting, Export Control, PE62715, WUDH251399, WU40

Abstract:

This report describes two instruments which have been developed for dust diagnostics. The first is a streak xray camera capable of recording time resolved dust density profiles. The camera uses a soft xray source and an intensified film sheet mounted on a rotatiing plate. The exposure of the film is proportional to the xray attenuation by the lofted dust, and a microdensitometer is used to measure the film density. The use of a calibration technique allows quantitative reading of the dust density directly off the film. The second instrument is a Double-Exposure-Cine-Flash Microscope. The instrument records dark field stop action cine photomicrographs of duct passing through the focal plane of a conventional optical microscope, for the purposes of determining particle size distributions, particle densities and particle velocities as a function of time. The 16mm cine camera runs at 333 frames per second and uses a 400 foot roll of 7250 high speed color film. Dust particles are actively illuminated by focusing the arcs of two internal EG&G 5M-3 flash lamps onto the 0.8 x 1. Omm wide by 0.1mm volume recorded by the microscope. Each flash is about 1/2 microseconds in duration. One lamp is fired three microseconds after the other to show the second position of a particle. The instrument package also includes a static pressure gauge and a back scattering nephelometer.

Abstract Classification:

Unclassified

Distribution Limitation(s):

07 - EXPORT CONTROL; DLSE CERTIFIED

57 - EXPORT CONTROL

Source Code:

413191

Document Location:

DTIC