Ad
related to: skyrim 1.5.97 free download
Search results
Results from the WOW.Com Content Network
Sikorsky's earliest attempt at a fast compound helicopter with stiff coaxial rotors was the Sikorsky S-69 (XH-59A) flown in the 1970s. Its top speed was over 260 knots but its excessive fuel consumption, vibration and complexity requiring the full-time attention of two pilots led to the program's cancellation. [5]
Ad
related to: skyrim 1.5.97 free download