SERVICE AND SHELF LIFE OF EXPLOSIVE SWITCH P/N 1186 FOR T3019E5 ARMING PROGRAMMER IM99A MISSILE
Abstract
The REL 1186 Explosive Switch is used in the T3019E5 Arming Programmer to break and make electrical circuits during the flight of the IM99A Bomarc missile. The purpose of this test was to determine if the service life could be extended so that three or more cycles of use could be realized from the switches. Fifty-eight samples were tested (29 modules with two switches wired in parallel for redundancy). These specimens were inspected, functioned and radiographed. The fire pulse for each switch was monitored and recorded by an oscilloscope and camera arrangement. Firing voltage, firing current, ignition delay and the energy required to open the bridge circuit were calculated. Fifty-six switches functioned satisfactorily. Two switches malfunctioned. These were not in the same module; therefore, all modules would have performed their intended function. It is considered that the malfunctions were not the result of degradation caused by aging. The minimum reliability demonstrated by the switches was 89.5% at a 95% confidence level. Considering the redundancy of the system (two switches in parallel) the demoated reliability was 98.9% at a 95% confidence limit. It is recommended that the service life of the REL 1186 Explosive Switch be extended to 54 months from the date of manufacture.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1963
- Accession Number
- AD0409169
Entities
People
- Don F. Woods
Organizations
- Ogden Air Logistics Complex