Photographs of Some Effects on Rain Drops of Shock Waves Produced By 60-Caliber and 20-mm Projectiles

Item

Title
Photographs of Some Effects on Rain Drops of Shock Waves Produced By 60-Caliber and 20-mm Projectiles
Description
Projectiles from a 60-caliber and a 20-mm gun were fired-through simulated rain drops of diameters 1.7 ± .3mm. The projectile velocities were varied from 1900 ft/sec to 4060 ft/sec and in certain cases the intensities of the bow shock waves could be estimated. Motion-picture sequences of the interactions of the projectiles and rain drops were taken by a Fastax high-speed camera setup. Times between successive photographs were approximately 150 microseconds. '!'he impacts of the low shock waves were seen to jar and distort the rain drops which always broke up some 600 to 4000 microseconds later.. The times required for breakup seemed to depend upon the shock wave intensity. In cues requiring times of the order of 4000 microseconds, blasts of debris and gaseous explosion products from the gun muzzle may have contributed to the breakup.
Creator
Seidl, F. G. P.
Format
1 online resource (26 pages) : ill.
Type
article
Abstract
Projectiles from a 60-caliber and a 20-mm gun were fired-through simulated rain drops of diameters 1.7 ± .3mm. The projectile velocities were varied from 1900 ft/sec to 4060 ft/sec and in certain cases the intensities of the bow shock waves could be estimated. Motion-picture sequences of the interactions of the projectiles and rain drops were taken by a Fastax high-speed camera setup. Times between successive photographs were approximately 150 microseconds. '!'he impacts of the low shock waves were seen to jar and distort the rain drops which always broke up some 600 to 4000 microseconds later.. The times required for breakup seemed to depend upon the shock wave intensity. In cues requiring times of the order of 4000 microseconds, blasts of debris and gaseous explosion products from the gun muzzle may have contributed to the breakup.
Extent
26
Corporate Author
Boeing Airplane Company
Report Number
WADC TR 56-393 Volume I p. 57-82
Report Availability
Full text available
Distribution Classification
1
Publisher
Wright-Patterson Air Force Base, OH : Wright Air Development Center, Air Research and Development Command, United States Air Force
Date
1956
Date Issued
1956-08
Provenance
Bombardier/Aero
Laboratory
Electronic Components Laboratory
Contract
AF 33(616)-3212
DoD Project
4158
DoD Task
41547
Distribution Conflict
No
Identifier
AD0097150
Is Part Of
Proceedings of the OSU-WADC Radome Symposium
Media
WADCTR56-393volume01article08.pdf

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Items with "Has Part: Photographs of Some Effects on Rain Drops of Shock Waves Produced By 60-Caliber and 20-mm Projectiles"
Title Class
Proceedings of the OSU-WADC Radome Symposium