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Supersonic aircraft must have considerably more power than subsonic aircraft require to overcome this wave drag, and although cruising performance above transonic speed is more efficient, it is still less efficient than flying subsonically. Another issue in supersonic flight is the lift to drag ratio (L/D ratio) of the wings. At supersonic ...
In January 2022, Boom began conducting engine run-ups using the XB-1, in preparation for taxi tests and the first flight later in 2022. [20] In May 2022, ground testing was completed with engine run up done on all three engines. Undercarriage and flight systems were tested and deemed ready. Taxi runs and actual flight runs were expected in late ...
Its “high-speed strategy” is mooting commercial flights that travel at up to Mach 4 – over 3,000 miles per hour – starting with transoceanic routes. NASA moves a step closer to supersonic ...
The X-54A was reported as being developed by Gulfstream Aerospace and is intended to be powered by two Rolls-Royce Tay turbofan engines. [1] The X-54A may be connected to Gulfstream's "Sonic Whisper" program, trademarked in 2005 as an aircraft design to "reduce boom intensities during supersonic flight"; [9] besides Gulfstream, Lockheed Martin and Boeing have also produced viable designs for ...
The destroyed Valkyrie had logged just 46 flights, and the remaining one ended its career after 83 flights — many of which with NASA as a supersonic testbed — and just over 160 hours in the air.
After Johnston's initial flight at 0.72 Mach, he thought the airplane was ready for supersonic flights, after the longitudinal trim system was fixed, and three more test flights. [17] The Army Air Force was unhappy with the cautious pace of flight envelope expansion and Bell Aircraft's flight test contract for airplane #46-062 was terminated.
It’s set to take off for the first time later this year, ahead of its first quiet supersonic flight. “In just a few short years we’ve gone from an ambitious concept to reality. NASA’s X-59 ...
The Lockheed Martin X-59 Quesst ("Quiet SuperSonic Technology"), sometimes styled QueSST, is an American experimental supersonic aircraft under development by Skunk Works for NASA's Low-Boom Flight Demonstrator project. [2] Preliminary design started in February 2016, with the X-59 planned to begin flight testing in 2021.