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Posted 10 March 2013 - 03:11
What if 3 stages rockets are running out of liquid fuel?
Posted 10 March 2013 - 03:39
Posted 10 March 2013 - 04:09
Posted 10 March 2013 - 05:05
SpaceX’s Grasshopper doubled its highest leap to date to rise 24 stories or 80.1 meters (262.8 feet) today, hovering for approximately 34 seconds and landing safely using closed loop thrust vector and throttle control. Grasshopper touched down with its most accurate precision thus far on the centermost part of the launch pad. At touchdown, the thrust to weight ratio of the vehicle was greater than one, proving a key landing algorithm for Falcon 9. Today’s test was completed at SpaceX’s rocket development facility in McGregor, Texas.
Grasshopper, SpaceX’s vertical and takeoff and landing (VTVL) vehicle, continues SpaceX’s work toward one of its key goals – developing fully and rapidly reusable rockets, a feat that will transform space exploration by radically reducing its cost. With Grasshopper, SpaceX engineers are testing the technology that would enable a launched rocket to land intact, rather than burning up upon reentry to the Earth’s atmosphere.
This is Grasshopper’s fourth in a series of test flights, with each test demonstrating exponential increases in altitude. Last September, Grasshopper flew to 2.5 meters (8.2 feet), in November, it flew to 5.4 meters (17.7 feet) and in December, it flew to 40 meters (131 feet).
Grasshopper stands 10 stories tall and consists of a Falcon 9 rocket first stage tank, Merlin 1D engine, four steel and aluminum landing legs with hydraulic dampers, and a steel support structure.
Posted 10 March 2013 - 19:43
Posted 20 April 2013 - 08:55
Posted 22 April 2013 - 03:22
Elon Musk @elonmusk 2 min
@dbhyslop Will post a video of the latest Grasshopper flight tomorrow (taken from the camera on our new hexacopter).
Posted 23 April 2013 - 03:20
[Musk:] Grasshopper rocket flies up 250m, holds against wind and lands. Vid taken from our hexacopter
[Question:] Was the rocket leaning into the wind while it was holding it's altitude?
[Question:] is the rocket evolving each trial or are you just testing what is capable of?