L-39 ZA/C

Albatros L-39 ZA/C

L-39 ZA/C :
En service :35/7

Présentation :

A low-wing aircraft with tandem seating and a classic all-metal airframe, it is equipped with a three-point hydraulically operated retractable landing-gear. Trapezoidal wings have fuel tanks on their tips. The wing has double-slotted flaps with a takeoff deflection of 25° and landing deflection of 44°. The fuselage consists of two construction parts – the forward and the rear one. The rear fuselage and tail are removable. The electronic equipment and oxygen system are located in a dielectric nose cover. In L-39, the canopy of the cockpit is hinged to the right. In newer development types L-59 (originally L-39MS) and L-139 it is hinged hydraulically upwards to the rear.

The power plant is an Al-25TL by-pass double-shaft turbojet engine with max. static thrust of 16.87 kN. The engine is started by a Saphire 5 single-shaft gas turbine. The types with maximum takeoff weight of 5,700 kg are equipped with a more powerful DV-2 engine with max. thrust of 21.57 kN. There is a classic mechanical control system with power transmission over levers and pull rods from both pilot posts.

The electrical equipment is powered by the main generator (9 kW) from an accumulator enabling autonomous operation. The electrical net includes inverters (115 V and 3×36 V). Radio equipment of the aircraft consists of radio, communication, radionavigation and identification devices. For the training of landing and approach, a RSBN-5S close navigation system and ILS landing system are used. The aircraft is also equipped with the RKL-41 radio compass, RV-5 radio altimeter, MRP-56PS marker and an identification device.

L-39ZA is equipped with a sight with a camera gun and a two-barrel 23mm quick-firing Gsh-23 gun, which is installed under the fuselage. Besides training tasks, it can also be used for tactical air surveillance. The L-39C version has two wing pods, L-39ZA and L-39ZO have reinforced wings with four underwing stations on which they can carry bombs, rockets, or two short-range air-to-air missiles. The L-39MS has higher performance and modern electronic equipment and avionics.

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Auteur Dr.watson ,thanks