RADIATION COMMUNICATION SYSTEM
Assignee
GENERAL DYNAMICS
Filed
Dec 21, 1989
Granted
Oct 21, 1997
Location
Fort Worth TX (General Dynamics/Lockheed)
Abstract
An aircraft has an exhaust flame or plume which can be modulated to communicate. A sound emitter is mounted to the aircraft for emitting acoustic waves into the exhaust plume. An encoder will control the emitter at selected digital sequence to provide a digital message. The flame or plume will radiate at a frequency range of interest depending on the type of aircraft. The sound waves cause the frequencies to change from a continuous spectrum to a spectrum which has a much lower amplitude. A detector remotely located from the aircraft will detect radiation. It filters frequencies outside of the frequency range of interest. It will discriminate between the modulated pattern and the continuous pattern. This output provides the digital code that was encoded by the encoder. A decoder will decode the message for the recipient.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Feb 6, 1991
Rescinded
May 10, 1996
Duration
5 years, 3 months
Inventor
- 1BOYD B. BUSHMAN
Sensitive facility: Fort Worth TX (General Dynamics/Lockheed)
Key Figure Cross-Reference
Record Details
- Patent number
- US 5680135
- Application
- 07454281
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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