Fiber optic pressure sensor for safing and arming a fuze
US5126559A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C15/31
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An arrangement used in safing and arming a munition device. The pressure sensor responds to pressure generated by igniting propellant of the munition and displaces from a first to second position. The power supply responds to setback of the munition to generate an electrical voltage. The light-emitting device responds to the electrical voltage. The photosensitive device connected to the power supply is powered by generation of the voltage and responds to receipt of light energy. An electro-explosive actuator connected to the photosensitive device is operable in response to electrical energy to actuate a rotor of the munition fuze from an unarmed condition to an armed condition. A fiber optic routing element defines a light transmission path from the light-emitting device to the photosensitive device via the pressure sensor. The pressure sensor responds to contact by expanding high pressure gases generated from igniting of the propellant to move from the first to second position and transmit sufficient light energy from the light-emitting device to the photosensitive device via a reflective surface of the pressure sensor at the second position to cause the photosensitive device to c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.