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Aviation History
1964
1964 - 0335.PDF
Cta ON FliUF. 'UlLUP HMIAWAI 60 DOC FOOT RANGE 20,000 FOOT »AK6f b.SOO fOOT UHU iGPULllir 212 F| «»e« me SHOULOE* 650gal centreline tank and one 45Ogal inner pylon tank. Choice of special stores on other inboard pylon (Gross weight 48,5741b or 48,5191b) feSOgal centreline tank and four GAM-83B nuclear Bullpup missiles (45.8871b gross) 45Ogal tanks centreline and inner pylons special store in bomb bay (48,71 lib gross) Alternative dispositions of nuclear and thermo- nuclear weapons, missiles and associated external fuel tanks Upper left, attack profile and gun-sight displays for release of conventional bombs in diving and level attacks. Left, the '' various toss and lay-down modes THE FIVE IS THE THUNDERCHIEF... carrier is mounted on a very large "bomb kicker" cylinder, whose punch can be adjusted for the strength and weight of any of the stores which it may be required to eject. With such a variety of stores, the armament controls in the cock- pit could be complex and confusing, but Republic have provided a clear integrated panel in a prominent location. Another distinctive feature for the pilot is the provision of the new standard USAF tape night instrument system, in which all indications are lined up against horizontal and vertical reference lines across the panel, according to the flight axis to which the various indications are related. The tape instruments were designed The variable ramp is visible against the outboard flank of the F-IO5s distinctive cut-back intake. The undercarriage leg has an architectural quality in its size and strength by Bendix and have now been installed in several USAF types. Pilots find them a little strange at first, but soon become accustomed to them and like them. Command markers can be set along the tapes to indicate desired values for a particular phase of operation; and the vertical acceleration tape shifts to expose a wedge-shaped symbol showing correct angle of attack for approach and landing. The actual angle is not shown, only the recommended range. Pilots feel that they could use this indication alone for landing, should the a.s.i. tape fail, but they generally use both together. Engine instruments consist only of r.p.m. in per cent, pressure ratio with markers for take-off and cruise ranges, oil pressure, j.p.t. and fuel flow. Fuel contents are shown on a single dial with a rotary switch to select indication of forward, main, aft and total internal contents on the main peripheral scale. Additional sectors in the centre of the instrument indicate the contents of the pylon-mounted tanks. The main Nasarr scope is mounted beneath the course director- called horizontal situation display^with clearance plane and antenna tilt scales on either side. The pilot has a fully automatic ejection seat cleared for use at low level. Necessary qualifications for flying the F-105D include several hundred hours of jet and jet fighter time and a course which in- cludes 2Ohr in T-39Bs equipped with Nasarr and Doppler, 16hr in the F-105D simulator and extensive ground instruction in mission planning. Serviceability in the field proved difficult in the early days, as it has done with every other aircraft of this general complexity, but recent performance has been excellent. Turn-round times of less than 30min and several sorties flown in one day are now commonplace and the maintenance hours per flight hour have steadily improved. By last July, 45 of the F-105s in service had flown more than 500hr. In Germany, a centralized servicing organization is employed to maintain all the aircraft for the three squadrons of a wing. Without a great deal of fuss, and with little public recognition, the F-105D is providing NATO with an extremely potent strike force. Tt has long been almost alone in its field.
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