PRECISION RF SENSITIVITY STUDIES (EVALUATION OF MARK 1 SQUIB AND MARK 2 MOD 0 IGNITION ELEMENT)
Abstract
Evaluation of a specific matching system for firing the MARK 2 MOD 0 ignition at 250 mc is discussed. Data for the impedance and VSWR of RF thermocouples are presented. However, the use of these thermocouples was discontinued. An IR detector mounted above a bridgewire is being used in place of the thermocouples. A system for firing the MARK 2 at 250 megacycles was assembled. The mount for the ignition element was redesigned. Losses in the RF firing system are described in detail. A prerequisite to the establishment of this factor was the evaluation of the loss in the base of the MARK 2. This value was concluded to be insignificant at frequencies below 250 megacycles although it is expected to assume prominence at elevated frequencies. The over-all efficiency of the matching system is about 41%. A 100-point Bruceton sensitivity test was conducted with the MARK 2. Applying the correction factor of 0.41 to the mean firing level, a figure close to the dc level was obtained. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0264990
Entities
People
- Paul F. Mohrbach
- Robert F. Wood
Organizations
- Franklin Institute