Tag: propulsion

57 Can gunpowder get you to the moon? 2013-07-29T15:08:19.763

40 Can you tack against the sun using a solar sail? 2013-07-18T10:45:48.160

37 Do booster stages run out of fuel, or are they purposefully shut off? 2017-05-30T00:50:30.610

33 Is this really Rosetta's orbit around 67P? 2014-08-06T12:58:52.993

32 If the Apollo mandate were delivered today, would the mission vehicle(s) and profile be similar? 2015-01-13T00:29:39.067

32 When the ISS moves, do the astronauts feel it? 2015-09-02T19:22:54.180

29 Is warp drive a legitimate avenue of scientific investigation? 2013-08-05T18:35:36.540

27 How fast will 1g get you there? 2013-07-29T23:51:26.023

25 Starting a liquid fuel engine in zero gravity 2013-10-17T13:40:50.133

25 Has in-space refueling been done? 2015-07-22T15:48:19.763

22 Has any CubeSat flown with an active propulsion system? 2013-08-02T15:25:28.217

20 Is there any ongoing research in nuclear pulse propulsion? 2013-07-16T21:25:00.927

19 Why are Ion Thrusters so energy hungry? 2017-02-03T11:31:46.043

18 What limits the speed of space probes currently? 2013-07-25T08:03:23.573

18 What exactly causes stranded upper stages to explode? 2013-10-05T01:12:39.623

17 What contributes the majority of the mass in an ion drive? 2013-07-29T08:13:39.583

17 Why aren't linear aerospike engines in common use? 2013-12-03T00:43:21.700

17 Can ion thrusters be scaled up? 2015-03-30T02:17:41.727

17 How much does it cost to fill an ion thuster with Xenon for a spacecraft propulsion system? 2015-04-09T02:49:32.020

16 Why is the "impossible" space drive impossible? 2014-08-01T16:32:57.363

16 What powers New Horizons? 2015-07-14T07:00:49.717

15 Could a ship take off from Earth using ion thrusters? 2013-08-21T22:33:04.697

15 Why is Philae not provided with a propulsion system? 2013-10-01T18:48:12.120

15 What factors determine whether a spacecraft/probe/satellite uses gyroscopes or propellant thrusters to rotate? 2014-03-24T14:50:43.470

15 What are the economics of Nuclear Thermal Propulsion? 2014-06-18T21:03:26.137

15 Why the non-symmetric design of rocket nozzles? 2014-09-16T10:31:41.497

15 Where does the thrust act in a rocket engine and how is it transferred to rocket structure? 2018-01-23T04:00:26.967

14 Is it more efficient to assemble spacecraft in orbit, or assemble on the ground and launch? 2013-07-16T22:11:57.320

14 Methods for propulsion other than rockets for leaving Earth's atmosphere? 2013-07-17T07:54:39.433

13 Once lightyears out of the solar system, could you expect to get feasible propulsion with a solar sail? 2013-08-03T01:56:27.313

13 Space travel using constant acceleration drive: Earth to Europa 2014-03-05T18:47:09.023

13 Why aren't there any space tugs in use? 2014-12-12T19:43:32.173

13 Pumped propellant propulsion - is it viable? 2015-04-19T12:26:29.537

13 How important is plume impingement in rendezvous operations? 2017-11-22T10:30:56.363

12 Is there an alternative to nuclear reactors for high-power spacecraft? 2013-07-31T20:03:21.653

12 Efficient types of nozzles used in rockets 2013-08-11T10:02:42.000

12 Are MMH and UDMH interchangeable? 2013-08-11T23:24:47.260

12 What are the challenges in Falcon 9 "full thrust" (v1.2) with densified propellant? 2015-12-11T00:37:20.717

12 Do the propellants ionize in chemical rockets? 2016-01-03T10:34:43.010

12 How does a solid propellant in a rocket work? 2018-01-24T09:59:32.287

11 What are the most promising non chemical rocket space launch approaches? 2013-07-18T07:54:02.613

11 Alcubierre "warp" drive and gravitation/orbital considerations 2013-08-09T17:02:42.357

11 Can a rocket motor be shut off after ignition? 2013-08-25T18:06:51.560

11 How big would a manned ascent stage for Mars need to be? 2013-11-18T16:07:51.463

11 Can I derive a combined equation for velocity of solar sail? 2013-12-02T15:15:43.057

11 How much delta-v can be achieved by venting the ISS atmosphere? 2013-12-31T05:27:45.730

11 What propulsion methods does the ISS use for station-keeping? 2014-04-12T18:22:42.937

11 Is it possible to use zinc powder as a NTR propellant? 2016-01-10T13:22:11.090

11 How does propellant flow work in a nuclear thermal rocket? 2016-03-31T08:04:36.083

11 Do rocket engines have shock absorbers? 2016-05-30T03:19:26.923

10 Minimum velocity to achieve fusion with Bussard ramjet 2013-07-23T21:13:54.970

10 Laser propulsion possible? 2013-07-28T01:18:49.697

10 Electromagnetic Propulsion Technology 2013-09-03T00:18:41.323

10 Why do pump and pressure fed liquid engines need to operate at high pressures? 2013-09-06T21:44:24.507

10 Could radiated heat propel space-craft in outer space? 2014-02-04T19:20:21.487

10 Hypothesized parameters of reactionless drives 2014-08-05T01:49:53.150

10 What kind of thrusters will the James Webb Space Telescope use for station keeping? 2015-01-14T23:41:57.267

10 What are the technical specifications of modern reaction control systems? 2015-03-12T04:16:13.703

10 Why do we use the gravitational acceleration at the Earth's surface when calculating the specific impulse of an engine? 2015-06-04T13:46:19.343

10 What are the various propulsion systems on the ISS? 2016-02-28T19:55:09.343

10 Why is the Deep Space Industries Prospector 1 using water propellant instead of hydrazine? 2016-08-13T01:09:14.747

10 Why is (conventional) ramjet not used for 2nd stage of rocket propulsion? 2016-09-14T13:29:37.463

9 Where could you go in a 20km iron asteroid? 2013-07-27T10:32:09.367

9 Speed-mass graph of starting rocket? 2013-08-04T23:14:41.577

9 Do solid propellant engine needs optimum temperature? 2013-09-07T12:15:23.050

9 Would an ionocraft have better or worse performance in the upper atmosphere? 2013-09-08T02:54:15.387

9 What kind of liquid propulsion systems do GEO satellites use? 2013-10-24T12:10:43.013

9 AOCS for very small satellites (micro, nano, pico, femto) 2014-10-22T16:49:30.877

9 Do any realistic rocket systems use different substances for propellant and fuel? 2016-01-09T00:52:51.730

9 Tiny emergency propulsive device if stuck floating in a large volume in microgravity 2016-09-28T13:48:33.773

8 Could Earth-lunar flybys be repeated consecutively without the use of propellant? 2013-10-21T02:48:55.760

8 Alcubierre Drive and interacting with matter 2013-12-14T19:24:20.963

8 Whats the status of the Dual Stage 4 Grid Ionic Thruster? 2014-05-20T14:27:19.053

8 Solar sail thrust calculation 2014-05-21T08:23:00.987

8 Is a manned craft powered by Solar Sail feasible from Earth Orbit to Lunar Orbit 2014-05-30T23:02:16.727

8 Why do lower molar mass rocket exhaust products give higher specific impulse? 2014-07-28T17:40:45.583

8 What is the performance of ion thrusters in actual deployed spacecraft? 2015-02-11T08:26:33.037

8 Do modern CFD codes reduce the number of test firings in an engine program? 2015-02-27T10:09:04.693

8 Would it be cheaper to go to Mars if the empty transit vehicle is slowly accelerated before the passengers board? 2015-04-28T02:36:29.080

8 What is the highest power output ever achieved with an ion thruster? 2015-12-01T21:12:34.803

8 Harpoon propulsion - what would be the problems? 2016-02-12T18:53:04.910

8 What is the ortho/para issue with LH2 as a fuel? 2016-07-28T10:57:36.187

8 Rocket Engine Plumbing: Still Confused about the Preburner 2017-01-16T23:21:06.743

8 How is charge dissipated in ion-propulsed spacecraft? 2017-02-12T10:35:04.210

8 Has on-orbit refueling ever been demonstrated with cryogenic fuels? 2017-08-15T01:39:09.027

7 Is it safe to use a coilgun or railgun as an engine inside the solar system? 2013-07-27T10:59:42.857

7 What kind of engine uses water as a propellant? 2013-09-22T08:45:12.873

7 What are the main problems with magneto plasma dynamic (MPD) thrusters? 2013-10-27T11:55:30.830

7 Could a harpoon-like gun be used by an astronaut to stop drifting away from a ship? 2013-10-28T19:51:06.363

7 Could India Send a Lander to Mars? 2014-01-19T03:58:02.830

7 What is a dual-combustion chamber design? 2014-02-12T18:44:53.457

7 Has any spacecraft landed on Earth with propulsion only? Or else, from what highest altitude? 2014-09-01T16:34:17.340

7 Why does the Dawn spacecraft have three ion engines at different angles? 2015-01-22T05:40:29.547

7 What's the thrust to weight ratio of Falcon 9 at landing? 2015-09-11T22:26:21.893

7 Optimal trajectory for solar electric propulsion? 2015-11-28T23:42:40.487

7 Recent advances in anti-matter generation 2016-04-28T23:45:56.373

7 Rocket Engine Plumbing: Still don't understand the Full Flow Staged Combustion Cycle 2016-10-07T03:30:20.813

7 Can (human) gas propel someone in a contained space station? 2016-10-22T08:14:09.423

7 How to find the optimum balance between amount of fuel and number of engines? 2017-02-28T14:03:40.517