CHAPTER
PROGRAM ] -— BLAST 2ND SHGCK T2ASUR MEUTS
Title:
Blast Pressures by Rocket
Trail Fhotography
Performing Acency: Naval Crdnance
Laboratory
Froject Officer:
2.1.1
Ie. C. J. Aronson
Objective
To obtain peak air ooverpressure as a function of distance by
means of rocket trail photography. Because all shots will be on the
surface, true free air pressures can not be obtained.
2.1.2
Procedure
~
The procedure is essentialfy) the same as that used during IVY.
A series of rocket smoke trails in-#fantype grid will be established
a few thousand feet from ground zero approximately @ sec. prior to
zero time. A camera nlaced in such a fosition as to photograph the
rocket smoke trails through the expanding shock wave will obtain 2
photographic record of the propagation of thé-blast wave related to
time. The velocity of the shock wave in air may be calculated and the
peak overpressures may be deduced from the velocity of the shock wave.
aad
2.1.3
Remarks
ry
ri
Project l.la will participate in Shots Braiv, Union, Koon and
“cho using rocket smoke trails. Fhotographs without the~smoke trail
background will be obtained for Shots Mectar, Yankec andRomeo.
2.2
Project Number:
Sponsor:
1.1b
Title:
AFSWP
Project Officer:
Blast Phenitigha by Surface
Photograohy
ormingAgency:
Mr. C. J. Aronson
19
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‘Laboratory