EPT
NASA and the Private Sector - Page 38
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Keep debates civil. | ||
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aksfjh
United States4853 Posts
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oBlade
United States5765 Posts
On May 31 2014 01:18 misirlou wrote: isnt the heat shield supposed to keep the inside from heating up? The heat shield keeps the capsule from vaporizing when it comes back into the atmosphere to slow down, there's other ways a spacecraft gets hot (sitting in the sun, systems that make heat) so you have to control heat through radiators and other shit I don't know about. | ||
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ShoCkeyy
7815 Posts
NASA demonstrated that it can land an unmanned spacecraft on a rugged planetary surface in the pitch dark in a May 28, 2014 free-flight test of the Morpheus prototype lander and Autonomous Landing Hazard Avoidance Technology, or ALHAT. | ||
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a176
Canada6688 Posts
but its quite obvious hyping the whole propulsive landing thing will lead directly to their Mars project (you can only use propulsive landing on mars) | ||
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Veldril
Thailand1817 Posts
On June 01 2014 01:30 a176 wrote: I don't know if Musk was just being coy, or if they genuinely didn't think of mentioning - but its quite obvious hyping the whole propulsive landing thing will lead directly to their Mars project (you can only use propulsive landing on mars) He mentioned it before. I think there is an animation of Draon V2's landing on Mars made by SpaceX floating around YouTube. Technically you would need more than Dragon V2's propulsive system to land on Mars since the atmosphere there is not thick enough to slow down (reduce the lateral velocity) the craft. They might need a two stage lander or need to use a chute to assist the landing. | ||
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{CC}StealthBlue
United States41117 Posts
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{CC}StealthBlue
United States41117 Posts
According to SpaceX the "fins deploy approximately a minute and 15 seconds into the flight, and return to their original position just prior to landing. The F9R testing program is the next step towards reusability following completion of the Grasshopper program last year. Early flights of F9R will take off with legs fixed in the down position, however we will soon transition to liftoff with legs stowed against the side of the rocket with leg extension just before landing. Future test flights of F9R at our New Mexico facility will include higher altitudes, allow us to prove unpowered guidance and to prove out landing cases that are more flight-like." Source | ||
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urboss
Austria1223 Posts
http://www.theguardian.com/science/2014/jun/28/nasa-launch-saucer-vehicle-parachute-hawaii-mars http://www.nasa.gov | ||
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Gotlander
Sweden22 Posts
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Gorsameth
Netherlands21952 Posts
On June 30 2014 00:34 Gotlander wrote: How long do you guys think will it take for NASA or any other space industrial company to make space travel from galaxy to galaxy possible? Possible? its possible today. practical is another matter and that will take centuries if not millenia. We are barely able to leave our home planet, travel within our own solar system is still very impractical. We have a long long way to go. | ||
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urboss
Austria1223 Posts
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Adreme
United States5574 Posts
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Veldril
Thailand1817 Posts
On June 30 2014 00:34 Gotlander wrote: How long do you guys think will it take for NASA or any other space industrial company to make space travel from galaxy to galaxy possible? Interstellar (between solar systems) might be possible. But between Galaxy? Good luck not dying of age before we get out of our galaxy even with a FTL drive | ||
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Mindcrime
United States6899 Posts
Forget about intergalactic travel; interstellar travel requires some serious sci-fi shit. | ||
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{CC}StealthBlue
United States41117 Posts
Astrobotic Technology's newly developed autonomous landing system was put to the test recently when it controlled Masten Space Systems' XA-0.1B Xombie suborbital technology demonstration rocket during a flight test at the Mojave Air and Space Port. Astrobotic's system designed to avoid terrain hazards while safely landing a spacecraft at a specific location on a asteroid, moon or planet. The June 20 test funded by the Flight Opportunities Program of NASA's Space Technology Mission Directorate saw the vertical-takeoff, vertical-landing Xombie ascend to about 853 feet in 25 seconds. Using cameras and an inertial measurement unit for navigation, the Astrobotic Autolanding System guided the vehicle to a precise landing. Source | ||
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Adrian_mx
Mexico1880 Posts
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urboss
Austria1223 Posts
On June 30 2014 02:23 Mindcrime wrote: Helios 2 holds the record for fastest speed reached by a spacecraft at 150,000 mph. At that speed, it would take around 18,000 years to make it to the nearest star. Forget about intergalactic travel; interstellar travel requires some serious sci-fi shit. There is some guy that has put together a formula to estimate the time for humanity required to reach the nearest stars. "Taking a journey to Barnard's Star, six light years away, as an example, Kennedy shows that with a world mean annual economic growth rate of 1.4% and a corresponding growth in the velocity of travel, the quickest human civilization might get to the star is in 1,110 years from the year 2007." http://en.wikipedia.org/wiki/Wait_Calculation Also mind that there is the problem of time dilation when traveling close to the speed of light. When you travel to the nearest stars with near light speed it will only take you 10-20 years. When you come back however all the people you know will be dead. | ||
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hypercube
Hungary2735 Posts
On June 30 2014 02:23 Mindcrime wrote: Helios 2 holds the record for fastest speed reached by a spacecraft at 150,000 mph. At that speed, it would take around 18,000 years to make it to the nearest star. Speed on a heliocentric orbit and speed in a interstellar trajectory is completely different anyway. The first simply means changing the orbit around the Sun. You actually slow down the spacecraft and let it fall towards the Sun. Most of the speed comes from the Sun's gravitational potential, not from the rocket's energy. | ||
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{CC}StealthBlue
United States41117 Posts
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{CC}StealthBlue
United States41117 Posts
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