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Japanese can't get their maths right, Venus probe lost
http://www.spaceflightnow.com/news/n1012/08akatsuki/ "We have found that the orbiter was not injected into the planned orbit as a result of orbit estimation," In other words: we didn't get the maths right and fired the thrusters at the wrong time... This is simply embarrasing! Why didn't they ask NASA or ESA to verify their calculations? Now they'll have to wait six more years for another attempt and it's unlikely the craft will still be functioning then. |
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Japanese can't get their maths right, Venus probe lost
On 10/12/2010 9:07 PM, Anonymous Remailer (austria) wrote:
http://www.spaceflightnow.com/news/n1012/08akatsuki/ "We have found that the orbiter was not injected into the planned orbit as a result of orbit estimation," In other words: we didn't get the maths right and fired the thrusters at the wrong time... This is simply embarrasing! Why didn't they ask NASA or ESA to verify their calculations? Now they'll have to wait six more years for another attempt and it's unlikely the craft will still be functioning then. Nothing there to suggest faulty maths. The orbit estimation they're referring to relates to the trajectory it is now following. More likely some technical malfunction during the burn. Sylvia. |
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Japanese can't get their maths right, Venus probe lost
On 12/10/2010 2:07 AM, Anonymous Remailer (austria) wrote:
http://www.spaceflightnow.com/news/n1012/08akatsuki/ "We have found that the orbiter was not injected into the planned orbit as a result of orbit estimation," In other words: we didn't get the maths right and fired the thrusters at the wrong time... This is simply embarrasing! Why didn't they ask NASA or ESA to verify their calculations? Now they'll have to wait six more years for another attempt and it's unlikely the craft will still be functioning then. It could just be that the orbital entry engine burn shut down early. I wouldn't ask NASA to give me any advice about how to put a spacecraft into planetary orbit after the Mars Climate Orbiter. http://en.wikipedia.org/wiki/Mars_Climate_Orbiter Pat |
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Japanese can't get their maths right, Venus probe lost
On 11/12/2010 2:18 AM, Pat Flannery wrote:
On 12/10/2010 2:07 AM, Anonymous Remailer (austria) wrote: http://www.spaceflightnow.com/news/n1012/08akatsuki/ "We have found that the orbiter was not injected into the planned orbit as a result of orbit estimation," In other words: we didn't get the maths right and fired the thrusters at the wrong time... This is simply embarrasing! Why didn't they ask NASA or ESA to verify their calculations? Now they'll have to wait six more years for another attempt and it's unlikely the craft will still be functioning then. It could just be that the orbital entry engine burn shut down early. I wouldn't ask NASA to give me any advice about how to put a spacecraft into planetary orbit after the Mars Climate Orbiter. http://en.wikipedia.org/wiki/Mars_Climate_Orbiter Pat Fair's fair - they were hampered by using a system of units developed in the dark ages. Sylvia. |
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Japanese can't get their maths right, Venus probe lost
Pat Flannery wrote in
dakotatelephone: On 12/10/2010 2:07 AM, Anonymous Remailer (austria) wrote: http://www.spaceflightnow.com/news/n1012/08akatsuki/ "We have found that the orbiter was not injected into the planned orbit as a result of orbit estimation," In other words: we didn't get the maths right and fired the thrusters at the wrong time... This is simply embarrasing! Why didn't they ask NASA or ESA to verify their calculations? Now they'll have to wait six more years for another attempt and it's unlikely the craft will still be functioning then. It could just be that the orbital entry engine burn shut down early. I wouldn't ask NASA to give me any advice about how to put a spacecraft into planetary orbit after the Mars Climate Orbiter. http://en.wikipedia.org/wiki/Mars_Climate_Orbiter That's what the most recent reports suggest: propellants transitioned to oxidizer rich, damaging the engine nozzle, and threw the spacecraft off balance. Possibly a problem with helium pressurization, similar to problems with the Nozumi Mars probe. At any rate, it's looking more and more like the main Venus mission is lost because the propulsion system is nearly useless. --Damon |
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Japanese can't get their maths right, Venus probe lost
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Japanese can't get their maths right, Venus probe lost
Dan Birchall wrote:
Apparently lobbing things at other planets is a little "hit or miss," to borrow an all-too-appropriate expression. No correlation with the fact that "rocket science" is a popular synonym for "hard to do". ;^) |
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Japanese can't get their maths right, Venus probe lost
On Dec 16, 7:26*am, Doug Freyburger wrote:
Dan Birchall wrote: Apparently lobbing things at other planets is a little "hit or miss," to borrow an all-too-appropriate expression. No correlation with the fact that "rocket science" is a popular synonym for "hard to do". *;^) We have multiple spendy public-funded supercomputers including all the necessary 3D interactive simulators, so it it actually is fairly easy. We also have overwhelmingly powerful microwave transmitters that can pretty much foil any probe at the push of a button. ~ BG |
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