-
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
