Modular Ball and Helix Setback Mechanism.

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Abstract:

The design and performance of a ball and helix double intergrating acceleration mechanism is discussed. This device can be used to provide setback safety for projectile fuzing or mechanical and electrical functions in terradynamics penetration vehicles and long delay mine and bomb fuzes. Units were built and tested having a volume of 0.07 cubic inches, a scale factor of 14.4 to 1, a bias level of 500gs, and an operating threshold of 110 FPS velocity change and 4 inches displacement. Work under a prior contract is summarized, results of laboratory air gun and 81mm mortar field tests are given, and an advanced design is described. Mathematical analysis and correlation with experiments plus detail design drawings are presented in 2 appendices. It is concluded that the ball and helix mechanism is a feasible device and recommendations are made for a final phase of exploratory development. Author

Author(s):
Koeberle, Lowell K. ; Overman, David L.
Author Organization(s):
REDM CORP WAYNE N J
Descriptive Note:
Final rept.,
Pagination:
0065

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
HDL-2009-1
Contract/Grant Number(s):
DAAG39-71-C-2009
Project Number(s):
DA-1-W-262301-A-300, HDL-CMT42
Monitor Series:
2009-1
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means
Communities of Interest:
Weapons Technologies
Descriptor(s):
*PROJECTILE FUZES, FUZE FUNCTIONING ELEMENTS, DETECTORS, FIRING TESTS(ORDNANCE), COMPUTER PROGRAMS
Field(s)/Group(s):
Ammunition and Explosives
Report Date:
1973 Aug 01