dieselpunkisdad:dieselpunkisdad:sea-room:dieselpunkisdad:russian-air-force:AN72this looks like someo
dieselpunkisdad:dieselpunkisdad:sea-room:dieselpunkisdad:russian-air-force:AN72this looks like someone tried to assemble a lego kit but when he got to the wings held the instructions upside downHush, she’s beautiful.As it turns out the AN 72 is quite a remarkable aircraft. There are two major reasons for the oddly high engine placement: 1. The AN-72 has been designed for rugged conditions. It can land on improvised landing strips: dirt, grass or - fitted with skis - on snow. The high placed engines are less likely to suck in debris so it’s less likely to be struck in the middle of nowhere.2. The over-wing engines blow the exhaust fumes over the wings creating additional lift. This is called the Coanda effect. The jet stream will essentially stick to the wing curvature and create additional lift:This Coanda effect gives the AN-72 short takeoff and landing (STOL) capability. Its takeoff roll is 620 meters and its landing run is 420 meters.Fun fact: this Coanda effect is the reason for the forward mounted engines on the C-17: Observe, that the engines on the C-17 are not so much mounted under the wing, as in-front of the wing. This allows part of the engine exhaust to be blown through the crack over the deployed flaps creating extra lift through the same Coanda effect:This results in more lift and lower stall speed for the C-17.The experimental Boeing YC-14 featuring a similar over-wing engine layout harnessing the Coanda effect:(via @bmashina )Other AN-72 images for sheer beauty:(via @russian-air-force )and for a perspective on size:(via @myfighterplanes ) -- source link