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Aviation History
1960
1960 - 0718.PDF
718 FLIGHT, 27 May 196t HELICOPTERS OF THE WORLD u .s.s Kamov Ka-15 Two-seat helicopters of this typeare thought to be extensively used by State collective farms and others are believedto have been provided for the use of fishing vessels. There are two contra-rotating,co-axial three-blade rotors, driven by a 255 h.p. AI-14V radial. Most of the struc-ture is metal, with metal and plywood covering. • Rotor diam, 32ft 8in; cruising speed, 75m.p.h.; hovering ceiling, 2,200ft; service ceiling, 9,800ft. Ka-18 Figures reported for the latestmodel of this helicopter are quoted at the end of this paragraph. The Ka-18 is adevelopment of the Ka-15, having a length- ened and redesigned forward fuselage witha cabin accommodating four persons in- stead of two. It is used for mail and freightcarrying and geographic survey, as well as for communications and ambulance work.Each of the co-axial rotor blades can be detached by two people in five minutes.The structure is a welded steel-tube truss with a monocoque tail boom; the fuselageis dural-skinned; the engine is an AI-14VF of about 270 h.p. • Rotor diam, 32ft 8in; length, 23ft; emptyweight, 2,2701b; gross weight, 3,3071b; max cruising speed, 80 m.p.h.; max range, 280miles. Mikhail Mil Mi-1 Quantity production of this very widely used helicopter appears to be con- tinuing. There are numerous versions for Ka-18 Mi-4 Admitted by American experts tobe a helicopter of very high quality indeed, although by no means of recent design, theMi-4 continues in production for civil and military duties. The normal military modelcan accommodate the Soviet equivalent of the jeep, a small car, a 75mm anti-tankgun, or two motor-cycle sidecar combina- tions. Fourteen armed soldiers are anotherpossible load and a passenger version sup- plied to Austria can seat up to sixteen. The variant used by Aeroflot is knownas the Mi-4P and seats ten passengers while providing ample space for luggage.This version is characterized by square— instead of round—windows, and there isno underslung gondola for the navigator, as on the military machine. In one agricul-tural version the gondola is used as a distributing point for chemicals. The standard powerplant of the Mi-4series is the ASh-82V developing 1,700 h.p. Provision is made for blind- and night-flying, and there is an anti-icing system, as on the smaller Mi types. The four-bladedmain rotor has hydraulic servo control. A Mi-1 notable feature of the metal fuselage,especially from the military aspect, is the clamshell doors at the rear.ft Rotor diam, 68ft llin; gross weight, 15,8731b; disposable load, 2,645-3,5271b; maxspeed, 116 m.p.h.; ceiling, 19,750ft. Mi-6 This is the mammoth among theworld's helicopters, being much larger in size and having much greater capacity thanany rival. It has, moreover, a high speed and has established numerous worldrecords, including an average of 167.2 m.p.h. over a 62-mile course, and a load-lift of no less than 26,4651b to a height of 4,400ft. The engines are two SolovievTB-2BM free turbines of 4,635 s.h.p. each. These units were specially designedfor the Mi-6 and are mounted atop the forward fuselage, as seen in the accom-panying photograph. It will also be noted that the Mi-6 has wings, to unload thefive-blade rotor. This rotor measures well over 100ft in diameter and works in (Continued on page 725, after featurearticle on Helicopter commercial operations) Mi-4P numerous duties, both military and civil.The passenger version has 3-4 seats and the agricultural version carries about 8801b ofchemicals in tanks one on each side of the fuselage. For ambulance duties panniersfor stretcher cases can be similarly dis- posed. In the mail-carrying role alsoauxiliary panniers are used. The engine is an AI-26V giving 575 h.p. for take-off.Data are essentially those already quoted for the Polish SM-1. Mi-3 The principal difference betweenthis type and the Mi-1 is the more efficient four-blade (instead of three-blade) rotor.There are also fuselage modifications, and the gross weight and disposable load arerather higher.
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