Accession Number:

AD0752554

Title:

Hypervelocity Launcher Improvement Techniques

Descriptive Note:

Final rept. Jul 1970-Jun 1972

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

• DeWitt, J. R.
• Akers, D. T.

Report Date:

1972-12-01

Pagination or Media Count:

51.0

Abstract:

ULLAHOMA, Tenn., Rept. no. ARO-VKF-TR-72-114.hypervelocity guns, design, optimization, sabot projectiles, stresses, diaphragmsmechanics, pressure, test methodsThe purpose of this work was to reduce the damage to models caused by the launching accelerations in a hypervelocity launcher. A diaphragm test device was modified to better simulate conditions at diaphragm release in a hypervelocity launcher. Modification allowed hydrogen to be used as the test gas and a sabot to be placed in a short launch tube downstream of the diaphragm. Pressure transducers on both sides of the diaphragm were used to monitor the opening characteristics of various diaphragms. It was determined that diaphragms with tapered web thicknesses could be designed to produce pressure-time histories on the base of sabots that were less conducive to production of damaging transient stress waves in the sabots.

Descriptors:

• *HYPERVELOCITY GUNS
• DIAPHRAGMS(MECHANICS)
• OPTIMIZATION
• PRESSURE
• SABOT PROJECTILES
• STRESSES
• TEST METHODS

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE