LOTNISKO WOJSKOWE (VOJENSKE LETISTE)

The Saab JAS-39 Gripen is a Swedish single-engine multi-role fighter in a duck-shaped, medium-wing design. In 1980, the Swedish government decided to start a research program to develop a successor to the AJ-37 Viggen. The technical design was carried out in June 1981. After approval, the government party placed an order in May 1982 for the development of prototypes and the production of 140 JAS-39 Gripen ("Gryf"). Three months later, flight-by-wire tests of the electric control system (fly-by-wire) on a specially adapted Viggen began. Work on the prototypes started in 1984. The first one left the assembly hall on April 26, 1986. Due to many difficulties with the control system, the flight took off only on December 9, 1988, 18 months after the scheduled date. On his sixth flight, February 2, 1989, Gripen leaned to the left when approaching and collided with his wing against the runway. The cause of the accident was the excessive sensitivity of this unfortunate "fly-by-wire" system. Until June 1991, three more prototypes were tested, on which the improved control system, navigation systems and weapons, as well as the engine and avionics were tested. The disaster at the shows on August 8, 1993 caused further changes - this time to the control system software. On March 4, 1993, the first serial JAS-39A (single-seat version) was tested. It was handed over to the armed forces of Sweden on June 8, 1996. In total, by the end of 1996, Swedish aviation has 30 "Gripen" A planes. Currently, intensive tests are underway, involving flights at high angles of attack. It is also planned to introduce a newer version of the wired control system software in all machines operated and produced in the future. By July 2002, 122 Gripen aircraft had been handed over to Flygvapnet. On September 6, 2002, the first JAS-39C Gripen was handed over. Technical data (JAS-39C version): length: 14.1 m, wingspan: 8.4 m, height: 4.5 m, maximum speed: 2200 km / h, maximum range: 3200 km, maximum ceiling 15200 m, armament: fixed - single cannon Mauser BK-27 cal. 27mm, suspended - usually 6 AIM-9 Sidewinder missiles.The Aero L-159 Alca is a modern Czech light training and combat aircraft. The prototype flight took place in 1997. In 2000, the machine entered the line in the Czech Air Force and remains in it today. In total, about 70 serial copies of this aircraft were made. The drive is provided by a single motor Honeywell F-124-GA-100 . The plane's top speed is 960 km / h. The machine has no on-board armament. The unit cost of the aircraft is estimated at $ 9.5 million (USD). Work on the L-159 Alca began at Aero Vodochody in 1992, in cooperation with Boeing. Their goal was to create a successor to the L-39 Albatros machines used in the Czech aviation. After successful completion of research and development, the L-159 was put into production, in the course of which two basic development versions of this aircraft were created: L-159A (combat version, with a single cabin), L-159T-1 (two-seater training and training version) . The L-159 is currently used by the air forces of the Czech Republic and Iraq. In the colors of the latter country, she fought against the so-called Islamic State (ISIS) in 2016-2017.