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Aviation History
1960
1960 - 1004.PDF
66 FLIGHT, 8 July 1960 Republic F-105D Thunderchief MILITARY AIRCRAFT OF THE WORLD . . . coming six years. Annual funding is likely to keep production runningat about 80 aircraft annually. New and uncompromised design has made the Talon a truly out-standing aeroplane, particularly in its modest demands on ground sup- port and skilled manpower. Powerplants are twin General ElectricJ85-5 turbojets each rated at 3,8501b with afterburner. Instructor and pupil sit in tandem ejector seats and can both operate the fully poweredcontrol system with two-axis stability augmentation. Normal equipment includes UHF, Tacan, IFF and ILS, but no provision is made for anyform of armament. Span, 25ft 3in; length, 44/1 2in; height, lift 10m; wing area 170 sq ft;weight empty, 7,2001b; gross weight, 11,650/fc; internal fuel, 500 Imp gal; max speed, 840 m.p.h. (M1.24) or 35,OOO/t; range, 1,200 miles; initialclimb at gross weight, 28,500/r/min; service celling, 55,OOOft; take-off ground run at max weight, 2,700ft; stalling speed at 8,450/b, 134 m.p.h. Republic F-10S Thunderchief Winner of the WS-300A competitionfor a single-seat tactical fighter/bomber in 1955, the F-105 went into volume production for USAF Tactical Air Command in the autumn of1958. First production version was the F-105B, fully described in our issue of June 12, 1959. Basically it carries twice the offensive load ofthe company's earlier F-84F, at more than twice the speed over approximately 50 per cent greater range and with more competentoperational equipment to ensure a successful mission in any weather. It is undoubtedly the most complicated and versatile aeroplane ever putin the charge of a single pilot. All Thunderchiefs are powered by a single Pratt & Whitney J75 turbojet with afterburner, the 105B havingthe P-5 version with a wet afterburning rating of 26,5001b. The engine is fed through unique supersonic wing-root intakes, and the afterburnernozzle is located in the centre of four petal airbrakes, which when closed form a convergent/divergent ejector nozzle. The fully poweredcontrols include a low-mounted slab tail, hinged and cambered leading edge, large flaps, small ailerons and wing spoilers. Fuel is housed infuselage cells and integral wing tanks, the capacity being more than 2,000gal. Sikorsky HUS-J with Bull pup missile; below TT-1 Pinto Radar ranging controls the M-61 Vulcan six-barrelled 20mm gun.In the F-105B the full potential 6,000rds/min of this gun was realized by Republic's dual feed system involving a pair of belts. An internalweapons bay can accommodate up to 4,0001b of a wide range of stores, and external pylons are provided on the centreline and at two points oneach wing. The 105B first flew on May 26, 1956, and has normal and maximum gross weights of 34,000 and 46,0001b respectively. LastDecember a 105B flew a 100km closed circuit at 1,216 m.p.h., pulling 2.5g continuously at 38,000ft at 9.9 miles radius around 12 pylons. Announced missions are interdiction, offensive sweeps, escort, inter-ception, offensive reconnaissance, and electronic countermeasures. A vast increase in operational effectiveness characterizes the currentproduction F-105D (J76-P-19W), data for which are given below, which first flew on June 9, 1959, and which is now in accelerated productionwith a backlog of some $400m, assuring manufacture until 1962. Although still a single-seater, the D model is a true all-weather aircraft,its lengthened nose accommodating the all-purpose NASARR monopulse radar system integrated with the fire-control and flight-control systems.NASARR provides all functions for missions at all levels, including air search, automatic tracking, ground-mapping, and terrain avoidance. Upondemand, a digital computer, in conjunction with other systems, will auto- matically govern weapon delivery, either from altitude or by a LABSmanoeuvre. To assist installation of the additional electronics, 16 cu ft were saved by developing a linkless feed system for the M-61 gun,ammunition being stored in a drum and fed by an endless-belt conveyor, another conveyor returning the empties back into the drum. As was outlined in detail in our full description of the Thunderchiefon June 12, 1959, the 105D equipment includes the ASG-19 fire-control produced by the Autonetics Division of North American Aviation andthe APN-105 Doppler radar made by LFE which includes an Earth-rate directional reference. With the production F-106 intercepter, this air-craft is the first to go into service with the new WADC Phase II instru- ment panel which incorporates vertical-scale flight instruments. It is bysuch improvements that it has been possible to dispense with a second crew-member, and considerable sums were saved by the decision not toprocure the tandem-seat F-105C and E. Republic have tried to have the F-105D accepted by NATO, andeven manufactured in Europe with a British engine, but the inevitable high unit price is a handicap. A VTOL development is being studied. Picture, page 44. Span, 34ft 11 in; length, 64ft 3in; height, 19ft Sin; wing area, 385 sq ft;weight empty, 27,500lb; gross weight, 52,000Zb (maximum) or 35,2001b clean; max speed, over 1,350 m.p.h. (M2.1); initial climb, approximately35,000ft jmin; service ceiling, over 50,000/t; range, over 2,000 miles. Sikorsky S-56 series Powered by twin Pratt & Whitney R-2800-54piston engines (1,900 h.p.) the S-56 has a five-blade main rotor, retractable main gear and clamshell nose doors. The type can seat 26troops and once lifted a load of 13,2501b to 7,000ft. Some 120 have been delivered as the US Army H-37A Mojave, the Navy HR2S-1Wradar picket and Marine Corps HR2S-1 transport. Sikorsky S-S8 series Well over 1,000 of these helicopters have beenbuilt, all with the Wright R-1820-84 (1,525 h.p.). Chief versions are the Army H-34 Choctaw 16-seat transport, the Navy HSS-1 and -INanti-submarine versions (the -IN is the first true all-weather helicopter) and the Marine Corps HUS-1, which can carry 48 spin-stabilizedrockets and four machine guns for close support. S-58s have been supplied to at least seven overseas air forces. Sikorsky S-61 series One of the company's new family of turbine-driven helicopters with amphibious hulls, the S-61 will eventually be powered by two General Electric T58-GE-8 engines (1,250 s.h.p.) andthe first flew in March last year. Basic military variants will be the HSS-2 ASW machine for the Navy and the HR3S-1 transport for theMarine Corps (with large rear doors). Normal operating crew will be four. Picture (HSS-2), page 51. Rotor diameter, 62ft; length with blades folded, 72ft 5in; height,15ft 4in; weight empty, 10,854Zb; gross weight, 17,300Zb (18,700 over- load); max speed, 150 m.p.h.; hovering ceiling in ground effect, 5,300/1;normal range, 285 miles. Temco TT-1 Pinto Currently the US Navy is evaluating 14 of thesetrim primary trainers (Continental T69-T-2 of 9201b thrust) in the course of an investigation into flying training generally. Some 100 cadetshave so far been taught ab initio on Pintos at Saufley Field, Pensacola, Florida, and others have started on piston aircraft in parallel courses.Pinto production has yet to be financed. Span, 29/r 10m; length, 30ft lin; height, 10/r lOin; empty weight,3,1391b; gross weight, 4,400/b; internal fuel, 103 Imp gal; max speed, 4,078/6, 285kt at sea level; cruise, 235kt; s-l climb, 4,078ib, 1,900ftImin;endurance, 90min; service ceiling, 30,000/t; stall, power off, 3,776/b, 63kt; take-off and land over 50ft, 3,000ft and 1,790ft. Vertol HC-1B Chinook A transport helicopter for the US Army,the Chinook will be an outstanding aircraft. Its twin Lycoming T55-L-5 free-turbine engines (1,940-2,200 s.h.p.) will be mounted Caravellefashion. The fuselage will provide 1,600 cu ft of unobstructed pay load space, 30ft long and accessible through a rear loading ramp up whichvehicles can be driven. Provision will be made for seating 40 troops, and the ferrying range will be no less than 1,267 miles. All the lateststability and navigation systems will be incorporated. Roll-out of the first of an initial batch of five is scheduled for November. Rotor diameter (tandem), 57ft; fuselage length, 48/t 6in; height, 17ft 4in; weight empty, 15,459Zb; gross weight, 23,500lb; max speed, 175 m.p.h.; service ceiling, 18,900/r; operational range, with max payload, 230 miles.
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