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 AnimeSuki Forum Spacecraft Propulsion Developments
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 2016-03-19, 21:51 Link #21 AnimeFan188 Senior Member   Join Date: Jan 2008 NASA Principal Technologist lays out strategy to develop advanced space propulsion over the next 25 years: "For optimal outcome, it is recommended that the future development of advanced propulsion capability proceed along parallel technology development pathways, one near-term path for proven but immature technologies (TRL ≥ 3) based on proven processes and a second far-term path for unproven but high capability concepts (TRL < 3) that could completely revolutionize mission possibilities. The near-term pathway would ideally have a four-prong emphasis: (1) advanced chemical propulsion, (2) electric/plasma propulsion, (3) nuclear thermal propulsion, and (4) hybrid nuclear thermal/electric propulsion." See: http://nextbigfuture.com/2016/03/nas...-lays-out.html
 2016-04-12, 23:08 Link #22 AnimeFan188 Senior Member   Join Date: Jan 2008 NASA funds Direct Drive Fusion Propulsion: "The Direct Fusion Drive (DFD) concept provides game-changing propulsion and power capabilities that would revolutionize interplanetary travel. DFD is based on the Princeton Field-Reversed Configuration (PFRC) fusion reactor under development at the Princeton Plasma Physics Laboratory." See: http://nextbigfuture.com/2016/04/nas...ve-fusion.html ============================= NASA testing electric solar sail for near term propulsion 3-7 times faster than Pluto Express: "Testing has started at NASA’s Marshall Space Flight Center in Huntsville, Alabama, on revolutionary propulsion system called the electric sail. Relatively conservative designs could send spacecraft at 100-200 km/second by utilizing solar wind traveling at 400 to 750 kilometers per second. The test results will provide modeling data for the Heliopause Electrostatic Rapid Transit System (HERTS). The proposed HERTS E-Sail concept, a propellant-less propulsion system, would harness solar wind to travel into interstellar space." See: http://nextbigfuture.com/2016/04/nas...-sail-for.html ============================= Stephen Hawking and a Russian Billionaire Want to Build an Interstellar Starship: "In a joint announcement at the One World Observatory in New York City today, Milner and Stephen Hawking unveiled Breakthrough Starshot, a $100 million research and engineering program seeking to lay the foundations for an eventual interstellar voyage. The first step of the program involves building light-propelled “nanocrafts” that can travel at relativistic speeds—up to 20 percent the speed of light. At such high velocities, the robotic spacecraft would pass Pluto in three days and reach our nearest neighboring star system, Alpha Centauri, just over 20 years after launch." See: http://gizmodo.com/a-russian-billion...ild-1770467186  2016-04-12, 23:48 Link #23 Ithekro Gamilas Rises Join Date: Feb 2008 Location: Republic of California Age: 42 High speeds even within the Solar System would be a huge benefit, even if it takes decades to reach the next nearest star system. __________________  2016-04-23, 21:58 Link #24 AnimeFan188 Senior Member Join Date: Jan 2008 'Impossible' EmDrive flying saucer thruster may herald new theory of inertia: "The EmDrive's thrust can be predicted (and tested), says McCulloch, by accounting for radiation pressure from Unruh waves. These cause the momentum to increase as the thruster moves. McCulloch suggests the same effect accounts for the anomalies observed when spacecraft accelerate around a planet: they jump." See: http://www.theregister.co.uk/2016/04...ve_theory_why/  2016-06-16, 22:41 Link #25 AnimeFan188 Senior Member Join Date: Jan 2008 EmDrive: Finnish physicist says controversial space propulsion device does have an exhaust: "A new peer-reviewed paper on the EmDrive from Finland states that the controversial electromagnetic space propulsion technology does work due to microwaves fed into the device converting into photons that leak out of the closed cavity, producing an exhaust. The research, entitled "On the exhaust of electromagnetic drive", is published in the journal AIP Advances 6 and is the brainchild of Dr Arto Annila, a physics professor at the University of Helsinki; Dr Erkki Kolehmainen, an organic chemistry professor at the University of Jyväskylä; and Patrick Grahn, a multiphysicist at engineering software firm Comsol." See: http://www.ibtimes.co.uk/emdrive-fin...ews&yptr=yahoo  2016-08-30, 23:53 Link #26 AnimeFan188 Senior Member Join Date: Jan 2008 NASA's EmDrive thruster just took an important leap forward: "The dream of the EmDrive, a futuristic space propulsion engine capable of getting us to Mars in a matter of weeks, may sound like science-fiction — but it’s just taken one big leap toward being science- fact. That’s because a paper describing how it can achieve thrust has reportedly passed the peer review process and is all set to be published by the American Institute of Aeronautics and Astronautics’ AIAA Journal of Propulsion and Power. Written by scientists at the NASA Eagleworks Laboratories, the paper’s successful passing of rigorous academic scrutiny was confirmed by independent scientist Dr. José Rodal on NASA’s Spaceflight forum — only for the comment to be quickly deleted." See: http://www.digitaltrends.com/cool-te...is-on-its-way/  2016-08-31, 00:06 Link #27 Ithekro Gamilas Rises Join Date: Feb 2008 Location: Republic of California Age: 42 Waiting foe implementation. Followed by Warp Drives. __________________  2016-09-01, 16:43 Link #28 DerGilga feeling old.... Join Date: Nov 2014 I don't get it.... why are people so fascinated with a glorified flashlight? also why do peope say that thing doesn't need fuel? Where does the power come to enable that drive? and why should it even be remotely replace rockets, when the theoretical achievable thrust is abysmal? I don't get it.... __________________ サイレント・マジシャン 2016-09-02, 07:23 Link #29 TheForsaken Winter is coming Join Date: Aug 2008 Quote:  Originally Posted by DerGilga I don't get it.... why are people so fascinated with a glorified flashlight? also why do peope say that thing doesn't need fuel? Where does the power come to enable that drive? and why should it even be remotely replace rockets, when the theoretical achievable thrust is abysmal? I don't get it.... I think you misunderstood something here. It is never meant to replace rockets. If you want to launch something to space, you must use a rocket. There is no other way with our current technology. It's a new type of thruster that doesn't use fuel. As for where the energy comes from, solar panels and batteries. __________________ 2016-09-02, 09:25 Link #30 DerGilga feeling old.... Join Date: Nov 2014 Quote:  Originally Posted by TheForsaken I think you misunderstood something here. It is never meant to replace rockets. If you want to launch something to space, you must use a rocket. There is no other way with our current technology. Quote:  Originally Posted by AnimeFan188 http://www.ibtimes.co.uk/emdrive-fin...ews&yptr=yahoo Quote:  British scientist Roger Shawyer devised the EmDrive concept and first presented it in 1999, but spent years having his technology ridiculed by the international space science research community. According to Shawyer, if the technology is ever commercially realised, EmDrive could transform the aerospace industry and potentially solve the energy crisis, end climate change and speed up space travel by making it much cheaper to launch satellites and spacecraft into orbit. Quote:  It's a new type of thruster that doesn't use fuel. As for where the energy comes from, solar panels and batteries. so it's a glorified, solar-powered flashlight? __________________ サイレント・マジシャン  2016-09-02, 14:57 Link #31 Ithekro Gamilas Rises Join Date: Feb 2008 Location: Republic of California Age: 42 If I understand the concept of the drive, it means they won't need to put fuel on the satelites, as their new drives won't need fuel, so they can correct their own orbits without expensive to carry fuel, sending a mission to correct its orbit (not longer viable without the space shuttles), or destroying it in some fashion. Fuel is weight, and the less weight you put on an object, the more you can lift. The less fuel on satelites and other spacecraft, means they can but on more equipment, or just launch them for less money as they will be lighter, requiring less rocket fuel to get into orbit, or in the case of exploration vehicles, or mining drones, escape Earth's orbit. Such a drive might make things like asteroid prospecting viable. __________________  2016-09-02, 21:18 Link #32 blakstealth Les Pays Bass Join Date: Jun 2011 How about that SpaceX Rocket explosion situation? lol  2016-09-02, 23:13 Link #33 TheForsaken Winter is coming Join Date: Aug 2008 @DerGilga: EmDrive makes spacecrafts weigh less, and therefore cheaper to be launched. __________________  2016-09-03, 03:22 Link #34 DerGilga feeling old.... Join Date: Nov 2014$ E = \sum_i \hbar \omega_i = \hbar \sum_i \omega_i = \hbar \Omega  p = \sum_i \hbar k_i = \hbar \sum_i k_i = \hbar K  k_i c = \omeha_i \rightarrow K c = \Omega \rightarrow p = \hbar \frac{\Omega}{c} = \hbar \frac{E}{\hbar c}  p = \frac{1}{c} E  T = \partial_t p = \frac{1}{c} \partial_t E \rightarrow T = \frac{1}{c} P(ower) $so$ P = 1 GW $, the power output of a nuclear power plant$ T = \frac{1}{3*10^8 \frac{m}{s}} 10^9 kg \frac{m}{s^2}  T = 3.33.... N $yeah, I only need the power output of a nuclear power plant to generate a thrust of whole 3.33... N with an emdrive but to put things into perspective ion drive so the Ion drive BHT8000 can produce 449mN of thrust with a power of 8kW and em-drive would produce$ T = \frac{1}{3*10^8 \frac{m}{s}} 8*10^3 kg \frac{m}{s^2}  T = 0.026 mN \$ So with the same power input an emdrive can produce 0.0059% thrust of an ion drive. Also why I can't just use a bunch of flash lights to get the same result as this emdrive nobody seems to anwser... p.s.: this board needs tex-support __________________ サイレント・マジシャン
 2016-09-03, 03:33 Link #35 AnimeFan188 Senior Member   Join Date: Jan 2008 The Impossible Propulsion Drive Is Heading to Space: "The EmDrive, a hypothetical miracle propulsion system for outer space, has been sparking heated arguments for years. Now, Guido Fetta plans to settle the argument about reactionless space drives for once and for all by sending one into space to prove that it really generates thrust without exhaust." See: http://www.popularmechanics.com/scie...-reactionless/
 2016-10-24, 22:50 Link #36 AnimeFan188 Senior Member   Join Date: Jan 2008 Positron Dynamics near term work to proving out antimatter catalyzed deuterium fusion propulsion with over 100,000 ISP: "Positron Dynamics is developing antimatter catalyzed fusion propulsion which they will first demonstrate in a cubesat launch. They are getting around the still mostly unsolved difficulties of storing antimatter. They are doing this by using Sodium 22 isotopes." See: http://www.nextbigfuture.com/2016/10...m-work-to.html
 2016-11-05, 22:12 Link #37 AnimeFan188 Senior Member   Join Date: Jan 2008 New NASA Emdrive paper shows force of 1.2 millinewtons per kilowatt in a Vacuum and a low thrust pendulum and tests were at 40, 60 and 80 watts: "The newest NASA emdrive paper concludes a force generation of 1.2mn/kw after errors measurement is accounted for. A low thrust pendulum at the NASA Johnson space center was used." See: http://www.nextbigfuture.com/2016/11...-force-of.html
 2016-11-07, 21:37 Link #38 AnimeFan188 Senior Member   Join Date: Jan 2008 Controversial Propellentless EmDrive is said to be undergoing tests in space on the Tiangong-2 station and US Air Force X-37B plane: "IBTimes UK has been informed that the US Air Force is currently testing out a version of the EmDrive electromagnetic microwave thruster on the X-37B unmanned military space plane, while the Chinese government has made sure to include the EmDrive on its orbital space laboratory Tiangong-2." See: http://www.nextbigfuture.com/2016/11...mdrive-is.html Well, that was quick.
 2016-11-07, 21:58 Link #39 Ithekro Gamilas Rises     Join Date: Feb 2008 Location: Republic of California Age: 42 Which suggests this is either something serious, or a curiosity that needs money and time thrown at it because it defies old logic. __________________
 2016-11-19, 17:47 Link #40 AnimeFan188 Senior Member   Join Date: Jan 2008 NASA's Physics-Defying EM Drive Passes Peer Review: "The reactionless thruster known as the EM Drive has stirred heated debate over the past few years. If successful it could provide a new and powerful method to take our spacecraft to the stars, but it has faced harsh criticism because the drive seems to violate the most fundamental laws of physics. One of the biggest criticisms has been that the work wasn’t submitted for peer review, and until that happens it shouldn’t be taken seriously. Well, this week that milestone was reached with a peer-reviewed paper. The EM Drive has officially passed peer review." See: http://www.forbes.com/sites/briankob.../#191c156f76e2