Supports – Pipe or cable – Extending through plate
Patent
1985-01-29
1986-06-03
Henry, Jon W.
Supports
Pipe or cable
Extending through plate
248900, G02B 2710
Patent
active
045926204
ABSTRACT:
An aircraft head-up unit includes a collimator that is automatically swung upwards out of the pilot's ejection envelope by an actuator, driven by gas pressure from an ejector seat mechanism. The collimator is supported by a first frame, and the actuator is supported by a second frame on which the first frame is pivotally mounted. The frames are held in position by spring detents, which can be overcome by an upward or downward impact. The collimator has a concave surface bearing a holographic element and is mounted below the pilot's line-of-sight, with a CRT display. A reflector, mounted above the line-of-sight, reflects a display image from the CRT display, through a combiner, to the collimator. The collimator reflects the display image to the combiner which directs it into the pilot's line-of-sight.
REFERENCES:
patent: 3503146 (1970-03-01), Woplin
patent: 3511465 (1970-05-01), Morion
patent: 3614314 (1971-10-01), Rossire
patent: 3620601 (1971-11-01), Waghorn et al.
patent: 3945716 (1976-03-01), Kinder
patent: 4188090 (1980-02-01), Ellis
Henry Jon W.
Smiths Industries Public Limited Company
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