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Yak-152 / Yak-54M - Design

The Yak-152 is a single-engine, two-seater, low-wing monoplane of a classical configuration with a retractable tricycle landing gear with nose wheel and the M-14X engine. Shock-absorbing properties of the landing gear with low pressure tires, short takeoff and landing run make it possible to operate the aircraft on small unprepared airfields.

The aircraft-mounted equipment enables the pupil-pilot to acquire the skill of using the up-to-date flight-navigation, radio communication and aiming equipment. The Yak-152 has a tandem cockpit configuration for two pilots. The front seat is intended for the pupil-pilot, the rear seat is for the instructor. One crew member may fly the aircraft from either seat. The aircraft is equipped with the SKS-94M ejection system to provide safe escape for crew members.

To develop in the cadet correct motor and mental skills on the Yak-154 pilots are arranged one behind the other, applied retractable landing gear with front support. Using developed in the production of finished products, the use of traditional technology aircraft industry, as well as structural continuity will significantly reduce the cost of the machine compared with the airplanes peers. In general, the inclusion of the UGC-YAK piston aircraft will increase its efficiency and will reduce the cost.

The Yak-152 aircraft is a component of the integrated training system designated for training pilots of contemporary and prospective aircraft. This system also includes flight simulators, computerized classrooms, as well as monitoring and control means. Yak-152 provides implementation of key tasks of primary flight training by day and night.

Yak-152 is designated for training in:

  • piloting technique, including basic, advanced, and aerobatic pilotage;
  • navigation basics;
  • spin in and spin off techniques;
  • instrumental en-route flight and landing approach using the airfield ILS;
  • group piloting at daytime, in VFR and over clouds;
  • acting in emergencies.

Aerodynamic configuration of the aircraft ensures flight safety during improper piloting.

Yak-152 is equipped with the innovative German RED A03T piston V12 diesel engine fueled with aviation kerosene. One of the "highlights" of the Yak-152 is its power plant - diesel. This is not the first case in the history of world aviation. However, this type of engine remains quite rare here. How is it justified to use it on a modern Russian training machine?

There are examples of installing diesel engines on training aircraft in the world. For example, in preparing civil aviation pilots both in Russia and abroad, they use the Austrian Diamond DA-42 aircraft with two aviation diesel engines that successfully combine simplicity in operation , fuel efficiency and affordable fuel. So, the installation of a diesel engine on the Yak-152 is a completely logical step for designers. A reliable engine, conventional jet fuel as fuel, excellent power and economic characteristics. molota will be much more attractive, since it does not require expensive aviation gasoline. And such factors as lower flammability diesel, too, need to be taken into account.

Another feature of the new Russian training aircraft is the presence of ejection seats of both pilots. Inside the unpressurized two-seat cockpit pilots are 'tandem' positioned. The forward crew station is designated for trainee, the aft one accommodates instructor.

The Yak-152 avionics suite provides:

  • indication of data on multi-function LCDs;
  • triple redundancy of flight-and-navigation equipment;
  • registration of flight information and aircraft systems performance data, as well as recording of crews voice conversations to a hardened on-board recorder;
  • automatic response to requests of IFF radar systems and secondary radars of traffic control systems.

The distinctive feature of Yak-152 aircraft is the unique SKS-94M ejection system providing emergency escape of both crew members. The aircraft is capable of operating from small airfields with ground strength of 5 kg/cm2. The possibility of outdoor storage is envisioned. Service life is not less than 10,000 hours, 30 years, and 30,000 landings. Aggregates, systems, and equipment of the aircraft may be operated on condition. Simplicity of design, convenient access to aggregates and wirings facilitate aircraft maintenance.

The machine is equipped standard set of radio communication and navigation equipment and pilot ejection system SKS-94M. Piloting the Yak-152 single-pilot as possible from the front and from the back of leaky cabins. Both cabins are equipped with heating and ventilation outboard air. Quality and safety margin landing gear with low-pressure tires, a small run-up and run allows the machine be operated with both concrete and underground runways. Cleaning and landing gear operating electric and braking wheels - with the help of hydraulics.

Airframe is all-metal. The only exception is trim rudders and ailerons made of composite material. Fuselage - all-metal monocoque reinforced with four longerons. One-piece wing scored odnolonzheronnoe of lenticular asymmetric profiles and provided with ailerons and flaps retractable, improving takeoff and landing characteristics. On the trailing edge of the aileron trim tabs are unmanaged plate. Bearing surface is attached to the fuselage at four points located on the side member and the back wall.

The effectiveness of training pilots is enhanced by the active use of computer training classes, This will consolidate the theoretical knowledge of students and work sequence maintenance and operation of aeronautical engineering by various specialists in accordance with the governing documents. As a result, almost twice reduced the time and cost of their training.

High reliability, simple structure, access to the system units and pipelines ensure easy maintenance with minimum costs for flight preparation with minimum available ground servicing equipment. The wing aerodynamic configuration, wing planform and airfoil have been selected to provide the aircraft functions of primary training and aerobatics. It is planned to use the Yak-152 aircraft in aero clubs and flying schools that makes it possible to train skilled pilots and sports aircraft pilots in a short period of time at minimum costs.

The Yak-152 was proposed for use in the Air Force, as well as in growth. In the latter case, due to limitations of its equipment, reduced flying weight about 40 kg and the cost of the aircraft at US$23,000. Apparently, in training aircraft Yak-152 has all the chances to find its niche in the training of future pilots.

Designers of Yak-152 leaned on a wealth of experience amassed by Yakovlev Design Bureau in development of training aircraft. Since 1935, more than 22,000 UT-2, Yak-11, Yak-18, Yak-52 piston-engine trainers have been manufactured in Russia and abroad.

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