When at the end 1951 , the development of heavy transport helicopter Yak-24 was launched, Design Bureau did not have much experience in the creation of helicopters; After lengthy ground tests, 3 July 1952 , the fourth prototype was able to make a flight on a leash.
As Vertolet-24 – video
In April 1955 year started production and produced at least 100 such twin-screw helicopter with a large fuselage, accommodates a crew of three and up to 30 equipped soldiers or 3000kg of cargo, is loaded into the helicopter through the rear loading ramp.
The design of the helicopter Yak-24UB has been significantly improved, it made its first flight in December 1957 , and it was launched in 1959 year; it was about the issue 50 machines. This variant could carry 40 fully equipped soldiers or up to 3500 kg of cargo. The civilian version of the Yak-24A Release 1960 year could seat 30 passengers, and Yak-24, It is intended for very important persons, It was a transport helicopter with a shortened fuselage, house 9 passengers.
The development of a military transport helicopter Yak-24 Soviet armed forces was launched simultaneously with the development of the Mi-4 to the same Resolution of the Government of 5 October 1952 g. and implemented in record time: 3 July 1953 g. the first of four experienced helicopter WD-24 (helicopter landing on 24 seats) It made its first flight piloted by test pilots SG. Brovtsevыm and E. F. Milyutichevym (Like all aircraft, created in OKB chief designer AS. Yakovlev, helicopter received the designation Yak-24).
To accelerate the development of the Yak-24 helicopter, taken along a longitudinal twin-screw scheme, it was decided to use the same powerplant, as Mi-4, but with two engines AL-82B, and similar four-bladed rotor, somewhat smaller diameter. During flight tests, which destroyed the helicopter experienced resource, many complex technical problems have been solved, associated with the elimination of vibrations, that could not be solved in the UK in the development of the twin-screw helicopter longitudinal scheme Bristol 173 and in the US in the development of severe twin-screw helicopter longitudinal scheme Piasecki YH-16. The development of the Yak-24 helicopter led the leading designer and. A. Ehrlich and deputy constructor H. TO. Skrzhinskiy.
Helicopters Yak-24 carrying capacity exceeded all foreign helicopters. The spacious cargo cabin with a rear cargo door can be placed two car-terrain vehicle GAZ-69, or a car with a gun, or to 45mm 40 soldier. In August 1955 g. air in Tushino demonstrated five first serial Yak-24 helicopters, in the same year, the helicopters took part in the exercises, military equipment where parachuted.
In vertolaye Yak-24 17 December 1955 g. the first in our country have been installed world helicopter record: Well letchiki. F. Milyutichev and D. A. Tinyakov lifted a weight of 4000 kg to a height of 2902m and a weight of 2000 kg to a height of 5082m. In summer 1956 g. helicopters Yak-24 flight was made to participate in the exercise group of Soviet troops in the GDR in g. Zerbst length of more than 2500 km.
Yak-24 in Monin
Was built 40 As vertoletov-24, which are widely used in the national economy for the transportation of bulky cargo on external sling and assembly work. anticipated Utilized- of Yak-24 helicopters to transport external load spacecraft "East" after touchdown.
an improved version of a helicopter have been developed Yak-24U with spaced vertical fins instead of the two-keel V-shaped embodiment and government facilities, and then with TBG embodiment instead of PD and automatic stabilization.
However, further development of the Yakovlev Yak-24 helicopters was recognized netseleobraznoy in connection with the advent of heavy transport helicopters in service MI-6 and the wide use of the armed forces and civil aviation more versatile and multi-purpose amphibious transport helicopters Mi-4.
Design. Helicopter formed by twin-screw longitudinal scheme with two PD and chassis chetyrehpornym. The fuselage cross section has a rectangular truss structure of steel pipes and consisted of three parts; bow with crew cabin, a central cargo cabin, and with a large tail rotor pylon rear. The cockpit is located nearby two pilots, them navigator and radio operator. Cargo cabin dimensions 10x2x2 m was equipped with a rear cargo door with folding ladder.
Feathering on the first helicopters was V-shaped, which was then replaced with a large horizontal endplate. Four chassis, fixed landing, truss, caster. Four-bladed rotors, with hinged blades and friction dampers, We had a significant overlap, blade of trapezoidal planform, similar structure to those blades Mi-4 at 0.5m length.
The power plant consists of two PD DB-82B, established under the rotors with gearboxes and synchronizing shafts. rotors management system booster, power on all four channels, It is included in the control system of the autopilot.
modifications
Yak-24A
Yak-24A – civilian version, which could be used as a flying crane, able to raise on the external sling load in 5000 kg. 1960 year
Once 24K
Once 24K – Embodiment 9-local VIP interior and with a shorter fuselage.
Yak-24R – Civil, for 39 passengers with more powerful 2013 kW (2700 l. from.) turbine engines - never reached series production.
Yak-24U (br)
Once 24UB – Issue was approximately 50 machines. Improved version could carry up 40 the soldiers or 3500 kg of cargo, including 2 GAZ-69 or anti-tank guns. 1959 year
Tactical-technical characteristics of the Yak-24
– chief designer: AND. A. Erlikh
– First flight: 3 July 1952 of the year
– Getting Started: 1955 year
– units produced: 40
As a crew-24
– 3 man
As Vmestymost-24
– 30-40 passengers depending on version
As Hruzopodъemnost-24
– 4000 kg of cargo
Engine Yak-24
– engine's type: 2 PD Shvetsov Ash-82B
– Power, kW: 2 x 1268
Yak-24 Dimensions
– The diameter of the rotor: 2 x 20 m.
– fuselage length: 21,34 m.
As Wes-24
– Maximum takeoff weight: 16 800 kg.
– empty weight: 10607
– Normal takeoff weight: 14270
Speed Yak-24
– full speed: 175 kmh.
– Cruising speed, kmh: 150
Dynamic ceiling Yak-24
– 4200 m.
Static ceiling of the Yak-24
– 2700 m
Range Yak-24 flight
– 266 km. maximum load
– 1300 distillation range of
Photo Yak-24
As pipeline-24T
Shooting with circular Kinopanorama Yak-24
As Vertolet DRLO-24R. Project 1959 year.
