Accession Number:

ADB001902

Title:

Miniature Precision Detonator

Descriptive Note:

Final rept. Jul 1973-May 1974

Corporate Author:

SPACE ORDNANCE SYSTEMS INC SUNNYVALE CA

Personal Author(s):

• Nakaoka, Shigeru

Report Date:

1974-06-01

Pagination or Media Count:

124.0

Abstract:

This report describes a two-pin miniature precision detonator MPD for use in space-limited safety and arming S and A devices providing multipoint initiation of missile warheads. The detonator is a fast-acting electric type not larger than the single-pin USAF Microdetonator, PN 66A11302, but with less sensitivity 80 milliamperes versus the specified 10 milliamperes for the Microdetonator no-fire. The foremost purpose of the design is simultaneous initiation of a number of detonators. This is best achieved by a very short firing time for the nominal unit. Two header designs were evolved 1platinum-tungsten alloy 479 wire bridge and 2thin-film palladium bridge, vacuum deposited on a vacuum deposited chromium base. The two headers were used to make full-up detonators. Both headers and detonators were tested using a capacitive discharge firing unit 22-microfarad capacitor charged to 30 to 40 volts. Test units were fired by mercury relay. Firing times were 4 to 5 microseconds with or - 1.0 microsecond jitter for the wire bridge and 1 microsecond or - 0.5 microsecond for deposited bridge. The deposited bridge units were therefore preferable for use where simultaneity is important.

Descriptors:

• *DETONATORS
• ARMING DEVICES
• BRIDGES
• CHROMIUM
• DEPOSITION
• ELECTRIC BRIDGES
• ELECTRIC POWER
• MICROSECOND TIME
• MINIATURIZATION
• PALLADIUM ALLOYS
• PINS
• PLATINUM ALLOYS
• PRECISION
• QUICK REACTION
• RELAYS
• REPORTS
• SAFETY
• SAFING AND ARMING(ORDNANCE)
• SENSITIVITY
• SHORT RANGE(TIME)
• SYNCHRONISM
• TEST EQUIPMENT
• THIN FILMS
• TIME
• VACUUM DEPOSITION
• WIRE

Subject Categories:

• Guided Missile Warheads and Fuzes
• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE