|Category:||Head-Up Display [HUD]|
|Object Name:||Buccaneer HUD Tube Unit Assembly|
|Division:||Airborne Display [ADD]|
|Year of Manufacture:||circa 1962|
|Location:||Archive Object Store|
The Buccaneer Strike Sight (Head Up Display) was supplied in two pressurized containers; the Head Up Display Unit and the Waveform Generator. The Rank Cintel precision Cathode Ray Tube had a two inch screen and had a broadband green P1 phosphor (described as zinc orthosilicate or willemite). Electro-magnetic deflection and permanent magnet focusing were used. The tube operated with a 20kV EHT, a beam current of 20-100microamps and gave sufficient luminance for the symbology to be visible against background illumination of 10,000ft Lamberts, thereby achieving a contrast ratio of 1.2:1. The spot size was 0.007 inch and resolution was approximately 280 lines. The CRT was warranted for about 50 hours. The Mark I display had a valve EHT Unit which took ages to power up. Later versions had a solid state EHT. The CRT is also identified as CV6050, G0602-J2. The CRT housing is an interesting assembly with a moulded plastic insulator for the tube body and EHT stem with an outer of machined Bakelite.