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L-159是捷克AERO沃多霍迪公司在捷克空军现役的L-39和L-59教练机基础上改进而成的,分单座攻击型和双座教练型两种型别。首架双座型原型机已于今年6月出厂,并随后于夏季进行了首飞试验。首飞共进行了5O分钟,达到了4575米的飞行高度和33O节的飞行速度,此后,它又进行了空中发动机熄火和重新启动飞行试验。首飞后该机回厂进行结构改装和振动试验,准备进行大迎角和高速飞行包线试验。捷克空军已于今年7月与该公司签订了一笔价值达7.O8亿美元的合同,用以采购72架L-159(包括单座型和双座型)。按计划,首批5架L-159将于1999年交付,2OO5年交付最后的25架。 L-159是一种轻型多任务攻击机/高级过渡教练机,沿用了经
L-159 is the Czech AERO Waduo Hoddy company in the Czech Air Force active duty L-39 and L-59 trainer based on the improvement from the single seat attack and two-seat coaching two types. The first two-seater prototype was delivered in June this year and was followed by a first flight test in the summer. The first flight took a total of 50 minutes, reached a flight altitude of 4575 meters and a flight speed of 33O knots, after which it carried out an in-flight engine flameout and restarted flight test. After the first flight the aircraft back to factory for structural modification and vibration test, ready for high angle of attack and high-speed flight envelope test. In July this year, the Czech Air Force signed a contract with the company worth a total of 708 million U.S. dollars to procure 72 L-159s, including single-seat and two-seater. It is planned that the first five L-159s will be delivered in 1999 and the last 25 will be delivered in 2005. L-159 is a light multitask attack aircraft / advanced transition trainer, followed by the