A reactionless drive is a hypothetical device producing motion without the exhaust of a propellant. A propellantless drive is not necessarily reactionless when it constitutes an open system interacting with external fields; but a reactionless drive is a particular case of a propellantless drive that is a closed system, presumably in contradiction with the law of conservation of momentum. Reactionless drives are often considered similar to a perpetual motion machine.[1] The name comes from Newton's third law, often expressed as, 'for every action, there is an equal and opposite reaction.'
Many infeasible reactionless drives, such as the Dean drive, are a staple of science fiction particularly for space propulsion.
The Flash Voyager GTX USB 3.1 premium flash drive puts SSD performance in your pocket, with up to 440MB/sec read and 440MB/sec write speeds. USB STORAGE AT SSD SPEEDS Experience portable USB storage with the speed of a solid-state drive. Our team at Drive 1 USA has provided quality, fully insured products and services to automotive dealerships for over 35 years. Drive 1 USA’s Mission is to increase Dealer Profits through People, Product and Process with Honesty and Integrity. Our team at Drive 1 USA has provided quality, fully insured products and services to automotive dealerships for over 35 years. Drive 1 USA’s Mission is to increase Dealer Profits through People, Product and Process with Honesty and Integrity. Drive 1 restricts the transmission to 1st and maybe 2nd gear. Drive 2 restricts it to 1st, 2nd and maybe third. Normally used when you want the prevent the transmission changing up any further, for instance for engine braking when descending a steep hill or with a heavy tow, and when you want to hang on to the lower gears during accleration. Store photos and docs online. Access them from any PC, Mac or phone. Create and work together on Word, Excel or PowerPoint documents.
Through the years there have been numerous claims for functional reactionless drive designs using ordinary mechanics (i.e., devices not said to be based on quantum mechanics, relativity or atomic forces or effects). Two of these represent their general classes: the Dean drive is perhaps the best known example of a 'linear oscillating mechanism' reactionless drive; the gyroscopic inertial thruster is perhaps the best known example of a 'rotating mechanism' reactionless drive. These two also stand out as they both received much publicity from their promoters and the popular press in their day and both were eventually rejected when proven to not produce any reactionless drive forces. The rise and fall of these devices now serves as a cautionary tale for those making and reviewing similar claims.[2] Things 2 8 8 – elegant personal task management.
The Dean drive was a mechanical device concept promoted by inventor Norman L. Dean. Dean claimed that his device was a 'reactionless thruster' and that his working models could demonstrate this effect. He held several private demonstrations but never revealed the exact design of the models nor allowed independent analysis of them.[3][4] Dean's claims of reactionless thrust generation were subsequently shown to be in error and the 'thrust' producing the directional motion was likely to be caused by friction between the device and the surface on which the device was resting and would not work in free space.[2][5]
The Gyroscopic Inertial Thruster is a proposed reactionless drive based on the mechanical principles of a rotating mechanism. The concept involves various methods of leverage applied against the supports of a large gyroscope. The supposed operating principle of a GIT is a mass traveling around a circular trajectory at a variable speed. Graphicriver facebook newsfeed banners download free. Copycatx 5.1 serial number. The high-speed part of the trajectory allegedly generates greater centrifugal force than the low, so that there is a greater thrust in one direction than the other.[6] Scottish inventor Sandy Kidd, a former RAF radar technician, investigated the possibility (without success) in the 1980s.[7] He posited that a gyroscope set at various angles could provide a lifting force, defying gravity.[8] In the 1990s, several people sent suggestions to the Space Exploration Outreach Program (SEOP) at NASA recommending that NASA study a gyroscopic inertial drive, especially the developments attributed to the American inventor Robert Cook and the Canadian inventor Roy Thornson.[6] In the 1990s and 2000s, enthusiasts attempted the building and testing of GIT machines.[9]
Eric Laithwaite, the 'Father of Maglev', received a US patent for his own propulsion system, which was claimed to create a linear thrust through gyroscopic and inertial forces.[10] However, after years of theoretical analysis and laboratory testing of actual devices, no rotating (or any other) mechanical device has ever been found to produce unidirectional reactionless thrust in free space.[2]
David M. Burns, Ph.D., manager of the Office of Science and Technology, a NASA engineer at the Marshall Space Flight Center in Alabama, theorized a potential spacecraft propulsion drive that could possibly exploit the known mass-altering effects that occur at near the speed of light. He wrote a paper published in 2019 by NASA in which he describes it as 'A new concept for in-space propulsion is proposed in which propellant is not ejected from the engine, but instead is captured to create a nearly infinite specific impulse'.[11]
Several kinds of thrust generating methods are in use or have been proposed that are propellantless, as they do not work like rockets and reaction mass is not carried nor expelled from the device. However they are not reactionless, as they constitute open systems interacting with electromagnetic waves or various kinds of fields.
Most famous propellantless methods are the gravity assist maneuver or gravitational slingshot of a spacecraft accelerating at the expense of the momentum of the planet it orbits, through the gravitational field, or beam-powered propulsion using the radiation pressure of electromagnetic waves from a distant source like a laser.
Become a bard mod. More speculative methods have also been proposed, like the Woodward effect,[12] the quantum vacuum plasma thruster or various hypotheses associated with resonant cavity thrusters.
Because there is no well-defined 'center of mass' in curved spacetime, general relativity allows a stationary object to, in a sense, 'change its position' in a counter-intuitive manner, without violating conservation of momentum.
Map a network drive to get to it from File Explorer in Windows without having to look for it or type its network address each time. Cookie 3 0 18 – protect your online privacy.
1. Open File Explorer from the taskbar or the Start menu, or press the Windows logo key + E.
2. Select This PC from the left pane. Then, on the Computer tab, select Map network drive. Epubor ultimate 3 0 7 9.
3. In the Drive list, select a drive letter. (Any available letter will do.)
4. In the Folder box, type the path of the folder or computer, or select Browse to find the folder or computer. To connect every time you log on to your PC, select the Reconnect at sign-in check box.
5. Select Finish.
Note: If you can't connect to a network drive or folder, the computer you're trying to connect to might be turned off, or you might not have the correct permissions. Try contacting your network administrator.
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