| 单词 | transonic |
| 例句 | Aerodynamic equations describing transonic airflows might contain as many as thirty-five variables. Hidden Figures 2016-09-06T00:00:00Z Calculating the pressure distribution over a particular airfoil at a transonic speed could easily take a month to complete for the most experienced of mathematicians. Hidden Figures 2016-09-06T00:00:00Z The problem was most notable in the transonic range, as the eddies of air surrounding an object approached the speed of sound. Hidden Figures 2016-09-06T00:00:00Z An engineer named Richard Whitcomb noticed that in the transonic speed range, the greatest turbulence occurred at the point where the wings of a model plane connected to its fuselage. Hidden Figures 2016-09-06T00:00:00Z But even with the errors, the machines processed the transonic, supersonic, and hypersonic flows and trajectory analyses in a way that surpassed the upper limits of human ability. Hidden Figures 2016-09-06T00:00:00Z The telltale sonic boom indicated that the plane had pushed through the volatile transonic region into the state of smoother, all-supersonic flows. Hidden Figures 2016-09-06T00:00:00Z Modeling flight at transonic speeds was a particularly knotty problem, because of the subsonic and supersonic winds that passed over the plane or model simultaneously. Hidden Figures 2016-09-06T00:00:00Z In 1947, the laboratory bought an “electronic calculator” from Bell Telephone Laboratories, an investment in the ongoing need for transonic flight research. Hidden Figures 2016-09-06T00:00:00Z His research lies in the field of viscous gas dynamics, or the study of how gases move around physical objects – like missiles and jets - during transonic and supersonic flights. Factbox: Who are the three Russian scientists accused of state treason? 2023-05-18T04:00:00Z Every supersonic airplane experiences transonic instability of some kind, but engineers can program modulations into the flight computers of most modern jets in order to mute some of the bobbling. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z After establishing herself in the 1950s, she quickly became known for her study of transonic flow, or the behavior of air when an object such as a plane approaches the speed of sound. Her problem-solving theorems helped pave the way for women in mathematics 2017-08-14T04:00:00Z The event was meant to generate excitement among engineers and the public for the tube-based, transonic, vacuum transport system popularized by the billionaire Musk in 2013. MIT wins SpaceX’s Hyperloop competition, and Elon Musk made a cameo 2016-01-30T05:00:00Z The stuff in Captain America’s shield might be needed for a material to construct blades so long that they are barely moving at the center while transonic at the tips. So What’s the Patriots’ Secret to Success? 2015-10-27T04:00:00Z There are dozens of engineering and logistical challenges that need solving, from earthquake-proofing to rights-of-way to alleviating the barf factor that comes with flying through a tube at transonic speeds. Hyperloop Is Real: Meet The Startups Selling Supersonic Travel 2015-02-11T05:00:00Z The team focussed on addressing some of its concerns about maneuvering in the transonic zone, and Stucky worked on improving communication between the pilot and the co-pilot. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z But as soon as it goes from subsonic to transonic to supersonic, we don’t know what to expect.” Findings: Chasing the Sound Barrier, in a Leap From 23 Miles Up 2010-03-15T22:40:00Z The effects of the transition from subsonic through transonic to supersonic velocity and back again are not known. 2010-01-22T14:31:00Z The flight was a short one at transonic speed. Tom Swift and the Electronic Hydrolung The hard-drive industry offers some models, but no one has used air bearings that move at near transonic speeds outside of a lab. Hyperloop Is Real: Meet The Startups Selling Supersonic Travel 2015-02-11T05:00:00Z That way, the pilot could anticipate transonic instability. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z Stucky found no reason for inching into space, and wanted the rocket to burn long enough to get him well beyond the transonic zone. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z Strange things happened to aircraft entering the transonic zone. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z “We know a lot about supersonic, and a lot about subsonic, but transonic? It’s the unknown”—the Bermuda Triangle of airspeed. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z The modifications paid off: he pushed through the transonic zone with ease. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z In 1956, a Navy test pilot passing through the transonic zone fired his cannons, caught up with his own bullets, and shot himself down. Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z Yeager, reflecting on flying transonic for the first time, recalled, “It felt like I was driving on bad shock absorbers over uneven paving stones.” Virgin Galactic’s Rocket Man 2018-08-13T04:00:00Z |
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