Yk-141 is the world’s first supersonic V/STOL fighter plane. Its first plane was accomplished in 1989. The plane is equipped with three jet engines and the main engine is used to assist take-off with its swivelling nozzles in addition to being used during normal flight. The other two additional engines located right after the cockpit are used only during take-off.  Thanks to these motors Yak-141 can accomplish VTOL operations up to 15800kg t/o weight. Additionally it can make STOL take-offs from 60 to 120m runways with a t/o weight of 19500kg. The only deficiency is the lack of an afterburner on the main engine.  Since tere are many similiarities with the “JSF” project, Yakovlev is cooperating with Lockheed.

Yak-141 specifications/doneleri: crew/mürettebat: 1, engines/motorlar: 1 x R-79V-300(for take-off and horizontal flight/kalkış ve düz uçuş için) , thrust/itiş gücü: 152.0 kN , 2 x RD-41(only for take-off/yalnız kalkış için), thrust/itiş gücü: 41.8 kN, wingspan/kanat açıklığı: 10.1m, length/uzunluğu: 18.3m, height/yüksekliği: 5.0m, wing area/kanat alanı: 31.7m², take-off weight/kalkış ağırlığı: 19500kg, empty weight/boş ağırlığı: 11650kg, max.speed/azami hızı: 1850km/h, ceiling/tavanı: 15500m, range(w.max.fuel)/menzili(azami yakıtla): 2100km, range(w.max.load)/menzili(azami yükle): 1400km, armament/silah donanımı: 1 x 30mm cannon/top, 100okg warload on VTOL, 2650kg on STOL duties on 6 pylons on the wings and the body/ kanat ve gövde altındaki 6 pilonda VTOL’da 1000kg, STOL’da 2650kg yük