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Aviation History
1960
1960 - 2063.PDF
P*11 • *# A jf|||j|jf|yfji FLIGHT, 23 September 1960 Hie workmanlike simplicity of this Avro 748 flight deck is deceptive. It contains controls and indicators for Smiths SEP.2 autopilot, Sperry CL.2 gyro-magnetic compasses, Zero Reader, ILS, VOR and ADF as well as Smiths-Way mouth fuel gauges and other systems controls Ferranti ISIS Attack Sight FOR some years Ferranti have been developing gun sights for lightfighters in addition to the more elaborate fire-control systems such as Airpass. The latest version of the small equipment, exhibited atFarnborough, is the Integrated Strike and Intercepter System (ISIS) which is offered for light fighters such as the Fiat G.91 orFolland Gnat in four different versions. All of these may be used for aiming guns air-to-air, aiming guns and rockets air-to-surfaceor aiming conventional bombs in a dive attack. Some ISIS versions can provide collimated "head-up" steering signals from an externalnavigation computer and aim tactical nuclear weapons in the over-the-shoulder manoeuvre. Provision can be made for aimingpursuit-type guided weapons such as Firestreak and Sidewinder. There are seven main units from which four-unit groups to formeach of four types of system may be built up. Individual units are interchangeable so that a simple system may be upgraded. The light fighter sight Type 10 is a small gyro sight withoutfixed graticule, the aiming mark being a moving "Celtic cross," as illustrated below. Two event markers may be superimposed. Inthe light director sight Type 10 the Celtic cross is used for conventional aiming, but a smaller Celtic cross is fixed and viewedin conjunction with a moving dot during either navigation or toss-bombing modes. The related control panel allows selection ofup to 12 types of weapon, choice of speed and dive angle and either weapon or navigation modes. The bomb-release unitType 10 controls the release of bombs in depressed line of sight Above this photograph of the Ferranti light director sight, described above, are the "Celtic cross" aiming presentations of the light fighter sight (left) and the light director sight. In the first the whole symbol mores to direct aim and on the right the Celtic cross is fixed and the dot gives steering or aiming instructions SYSTEM SURVEY dive attacks and uses a two-axis gyro for determining releaserange. The Type 11 incorporates electro-magnetic pick-offs on the two-axis rate gyro to allow rate of pitch during the pull-up tobe measured and integrated. The Type 10 computer contains circuitry for controlling the sight and release gyros while theType 11 also caters for Doppler speed and drift-angle inputs and for roll-stabilizing the pilot's display. For air-to-air firing the sight has only two range settings, 600and 1,000 metres, and a wing-span setting scale. The event markers would be used to indicate when a guided weapon hadlocked-on to its target. When bombing, the pUot tracks the target and presses the firing button to uncage the release gyro. Thebomb is released when the range is correct; and the event markers appear to indicate gyro uncaging and bomb release. When Doppleris available, the pilot may attack at any speed between 300 and 500kt, instead of at either 350 or 450kt. Drift angle is accountedfor and the display is roll stabilized. The navigation mode provided in the third ISIS combinationshows the dot moving laterally against the fixed aiming mark to indicate heading error. The pilot can therefore follow a selectedcourse without looking down into the cockpit. For toss-bombing with the fourth ISIS combination, the pilot flies over the targetand presses the firing button as he does so to uncage the release gyro. The bomb release unit automatically compensates forchanges in speed and releases the bomb after about 110° of climb. The dot moves within the Celtic cross to direct the pull-up andevent markers show uncaging of the gyro and release of the bomb. Release occurs only if the firing button is continuously held down,so that the attack may be abandoned at any moment. The light fighter sight is lOfin long, 4in wide and 6.3in high andweighs 7|lb. The director sight is slightly wider. The basic ISIS requires only 28V supplies, but a.c, navigation and true airspeedinputs are variously needed for the more advanced combinations. Rapid-processing Colour Film THE rapid-processing film projector equipment produced byKelvin Hughes for use in projecting radar displays onto large screens can now produce displays in three colours. The methodused is to display selected synthetic radar information in a blue/ green c.r.t. and to photograph it through one of three selectedcolour filters, using blue/green-sensitive film. Each radar display can be converted to one of the three colours, successive displaysbeing projected together to form the three-colour picture. Hostile, friendly and unknown traces, identified by the normal syntheticdisplay methods, could then be presented on a large screen to form an immediately identifiable situation display. Red, green andwhite symbols appear on a pale blue background. The Kelvin Hughes RP1 processors can handle 35mm and70mm film or 16mm and 35mm film. Speeds of lOft/min and processing times of 30sec, or 40ft/min and 60sec are available,with either negative or positive processing. The RP3 is a new, smaller step-by-step processor which photographs discrete dis-plays on a c.r.t., processes the positive or negative image in as little as 5sec and transports it to a theatre-type projection station. Thespecial colour film requires 20sec for processing. The RP3 system can be used for military, civil and marine radar centres or as anoff-line computer processor-monitor in industry, or in banks and stock exchanges. The film is a permanent record, but can also berescanned for low band-width transmission over land-lines. Position and Homing Indicator IN these columns on August 5, recording the formation of theGerman Bendix/Telefunken company Teldix, it was stated that the PHI navigation computer for the F-104G and G.91, whichwas to be overhauled by Teldix, was produced by Bendix in the US. The PHI is in fact not only designed by Computing Devicesof Canada, but also manufactured by them for these two aircraft. Canadian Simulator for F-104 Series GERMAN and Netherlands orders are to be placed with CanadianAviation Electronics Ltd of Montreal for flight simulators for the F-104Gs to be built in those countries. C.A.E. won the Canadianorder for the CF-104 simulator and at the same time made cost and technical proposals for the F-104G. The European orders will beworth about $18m and the programme will be supervised by the RCAF and Department of Defence Production. Other countriespurchasing F-104Gs may also order these simulators.
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