Visually Activated Switch System (VASS).
Abstract
The Visually Activated Switching System (VASS) provides a simple means for control system switching during 'hands-on' flight. Switching is accomplished by looking at a cockpit switch and operating a single trigger switch on the stick or throttle. A helmet-mounted aiming reticle, as available in a military VTAS (Visual Target Acquisition System) aims a miniature helmet-mounted infrared transmitter at a selected switch. Standard MIL-spec illuminated pushbutton switches are modified to include detectors that sense the IR energy and cause the switching action. The pushbutton switches may also be operated manually in a normal manner. Failsafe features are included to prevent inadvertent or erroneous switch operation. Two systems were developed. In one, the Model A VASS, the IR transmitter is mounted on an adjustable headband, and a VTAS 'granny glass' reticle is used. The Model B system uses a pilot's flight helmet, and a VTAS parabolic visor aiming reticle. Both systems include a remotely operated switch assembly of four switches mounted on 1-inch centers and a combined controller and electronics unit, containing the remainder of the system circuits. A cable assembly, pilot's trigger switch, and a single test fixture were included. The systems were tested and meet the operating requirements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1976
- Accession Number
- ADA031589
Entities
People
- E. Potter
- J. Gordon
- P. Burkott
Organizations
- United Technologies Corporation