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2006–present. Number built. 1,000+ [4] Developed from. Lockheed Martin X-35. The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, stealth multirole combat aircraft designed for air superiority and strike missions; it also has electronic warfare and intelligence, surveillance, and reconnaissance capabilities.
- 15 December 2006; 16 years ago (F-35A)
- 2006–present
- 965+ as of September 2023[update]
- Lockheed Martin
The Airbus A350 is a long-range, wide-body twin-engine airliner developed and produced by Airbus. The initial A350 design proposed by Airbus in 2004, in response to the Boeing 787 Dreamliner, would have been a development of the Airbus A330 with composite wings and new engines. Due to inadequate market support, Airbus switched in 2006 to a ...
- 14 June 2013
- 2010–present
- 552 as of 31 August 2023[update]
- Two
Field explanations The fields in the table listed below describe the following: Model – The marketing name for the processor, assigned by The Nvidia. Launch – Date of release for the processor. Code name – The internal engineering codename for the processor (typically designated by an NVXY name and later GXY where X is the series number and Y is the schedule of the project for that ...
Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network)[1] including 1 billion people in more than 193 countries.[2][1][3] The official theme for 2024 is "Planet vs ...
- Etymology
- Overview
- Classification of Mach Regimes
- High-Speed Flow Around Objects
- High-Speed Flow in A Channel
- Calculation
- See Also
- External Links
The Mach number is named after the physicist and philosopher Ernst Mach according to a proposal by the aeronautical engineer Jakob Ackeret in 1929. The word Mach is always capitalized since it derives from a proper name, and since the Mach number is a dimensionless quantity rather than a unit of measure, the number comes after the word Mach; the se...
Mach number is a measure of the compressibility characteristics of fluid flow: the fluid (air) behaves under the influence of compressibility in a similar manner at a given Mach number, regardless of other variables. As modeled in the International Standard Atmosphere, dry air at mean sea level, standard temperature of 15 °C (59 °F), the speed of s...
While the terms subsonic and supersonic, in the purest sense, refer to speeds below and above the local speed of sound respectively, aerodynamicists often use the same terms to talk about particular ranges of Mach values. This occurs because of the presence of a transonic regime around flight (free stream) M = 1 where approximations of the Navier-S...
Flight can be roughly classified in six categories: For comparison: the required speed for low Earth orbitis approximately 7.5 km/s = Mach 25.4 in air at high altitudes. At transonic speeds, the flow field around the object includes both sub- and supersonic parts. The transonic period begins when first zones of M > 1 flow appear around the object. ...
As a flow in a channel becomes supersonic, one significant change takes place. The conservation of mass flow rateleads one to expect that contracting the flow channel would increase the flow speed (i.e. making the channel narrower results in faster air flow) and at subsonic speeds this holds true. However, once the flow becomes supersonic, the rela...
When the speed of sound is known, the Mach number at which an aircraft is flying can be calculated by 1. M = u c {\displaystyle \mathrm {M} ={\frac {u}{c}}} where: 1. M is the Mach number 2. u is velocityof the moving aircraft and 3. c is the speed of soundat the given altitude (more properly temperature) and the speed of sound varies with the ther...
Ayrton Senna da Silva (Brazilian Portuguese: [aˈiʁtõ ˈsẽnɐ dɐ ˈsiwvɐ] ; 21 March 1960 – 1 May 1994) was a Brazilian racing driver who won the Formula One World Drivers' Championship in 1988, 1990, and 1991.One of three Formula One drivers from Brazil to become World Champion, Senna won 41 Grands Prix and set 65 pole positions, with the latter being the record until 2006.
v. t. e. The Richter scale [1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Francis Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it ...
