超级军网美国人到底掌握了RD-180的制造技术没有?
来源：百度文库 编辑：超级军网 时间：2024/04/20 16:30:26
美国的补燃液氧煤发动技术到底怎么样,不是以前有个RS-84和RS-83吗美国的补燃液氧煤发动技术到底怎么样,不是以前有个RS-84和RS-83吗
补燃液氧煤发动技术又不是什么很先進的技術，不論是推力，比沖都一般的很，不過就是性能比較平衡，成本不是太高罢了！
RD-180的技术参数：
真空推力：933,400 磅力（4.15 MN）
真空比冲：338 s (3,313 N·s/kg)
海平面比冲：311 s (3,053 N·s/kg)
重量：12,081 lb (5,480 kg)
直径：124 英尺 (3.15 m)
长度：140 英尺 (3.56 m)
燃烧室数： 2个
燃烧室压力： 257 bar / 3,722 psia (25.7 MPa)
喷嘴面积比： 36.87:1
混合比：2.72:1（氧化剂：燃料）
推重比：78.44:1
真空推力：933,400 磅力（4.15 MN）
真空比冲：338 s (3,313 N·s/kg)
海平面比冲：311 s (3,053 N·s/kg)
重量：12,081 lb (5,480 kg)
直径：124 英尺 (3.15 m)
长度：140 英尺 (3.56 m)
燃烧室数： 2个
燃烧室压力： 257 bar / 3,722 psia (25.7 MPa)
喷嘴面积比： 36.87:1
混合比：2.72:1（氧化剂：燃料）
推重比：78.44:1
没有，PW本来打算自己造，不过后来放弃了，Atlas V继续实用进口的俄罗斯发动机
仿造还是要投入的，PW对进口的RD-180很满意，没什么要改动的地方，进口还便宜，那就继续用吧。
毛子毕竟在液煤这方面的应用经验绝对的丰富
毛子毕竟在液煤这方面的应用经验绝对的丰富
原帖由 sd6632221 于 2009-3-5 15:18 发表
补燃液氧煤发动技术又不是什么很先進的技術，不論是推力，比沖都一般的很，不過就是性能比較平衡，成本不是太高罢了！
这话说的，那请这位 高级技工 给做个商业化的嘛！
美国法律规定，运载军用卫星的火箭，其零部件必需全部在美国制造组装。RD180也不例外。尽管进口的俄罗斯发动机便宜，PW也只能和俄罗斯成立合资企业，为军方制造RD180。
http://www.space.com/spacenews/archive04/rd180arch_061604.html
Pratt & Whitney Building Prototype RD-180 Components
By JEREMY SINGER
Space News Staff Writer
posted: 11:04 am ET, 21 June 2004
WASHINGTON — Pratt & Whitney Space Propulsion of West Palm, Fla., has begun building prototype hardware intended to enable the company to produce the Russian-designed RD-180 rocket engine in the United States, according to a senior Pentagon official.
The company began working on components including combustion chambers earlier this year, the official said.
The RD-180 serves as the main engine for Lockheed Martin Corp.’s Atlas 5 rocket, one of the two primary sources for U.S. military space launches under the Evolved Expendable Launch Vehicle (EELV) program.
Patrick Louden, a spokesman for Pratt & Whitney, deferred to Lockheed Martin for comment regarding the RD-180 engine.
Lockheed Martin recently completed the acquisition of the technical data needed to build the engine domestically, and is in the process of translating that information into English, a company official said. That process is expected to be completed by the end of 2004, the official said.
Following completion of the translation, officials from Lockheed Martin and RD Amross, a joint venture between Pratt & Whitney and RD-180 engine-maker NPO Energomash of Khimki, Russia, will train U.S. workers in the skills they will need for full-scale production and launch operations of the engine, the Lockheed Martin official said.
U.S. and Russian government negotiations on technology transfer and control issues, which played a part in delaying the RD-180 co-production schedule, also have been completed, the Lockheed Martin official said.
U.S. policy requires the establishment of a domestic RD-180 production line in order to avoid dependence on Russia for launching military and intelligence satellites.
The Pentagon had expected the domestic production line to be ready in 2005, but that schedule was pushed back by at least three years in 2001 for reasons that also included the collapse of the commercial launch market, which reduced the number of Atlas 5 rockets that Lockheed Martin planned to build.
In the meantime, Lockheed Martin has stockpiled 18 of the Russia-built engines, enough for several years worth of missions, the Lockheed Martin official said.
While the Pentagon hopes that co-production will begin in 2008, Lockheed Martin still has reservations about the concept.
"Until the demand increases in the commercial and U.S. [government] launch market, the full capability of a second-source engine facility only would increase the excess capacity facing the space propulsion and launch industry today," the Lockheed Martin official said.
The weak commercial launch is expected to drive up the cost of future EELV launches by as much as 50 percent, the senior Pentagon official said. This cost growth triggered an internal Defense Department review that looked at whether less expensive options exist for its space launch needs.
The review, chaired by Michael Wynne, acting undersecretary of defense for acquisition, technology and logistics, concluded April 26 that the Pentagon should continue to spend whatever is necessary to keep both Lockheed Martin and Boeing in the launch business.
However, Wynne directed the Air Force to study whether the notion in its Space Launch Modernization Plan, which was developed in 1994, that high reliability requires high launch rates still holds true today, the senior Pentagon official said.
Comments: jsinger@space.com
http://www.space.com/spacenews/archive04/rd180arch_061604.html
Pratt & Whitney Building Prototype RD-180 Components
By JEREMY SINGER
Space News Staff Writer
posted: 11:04 am ET, 21 June 2004
WASHINGTON — Pratt & Whitney Space Propulsion of West Palm, Fla., has begun building prototype hardware intended to enable the company to produce the Russian-designed RD-180 rocket engine in the United States, according to a senior Pentagon official.
The company began working on components including combustion chambers earlier this year, the official said.
The RD-180 serves as the main engine for Lockheed Martin Corp.’s Atlas 5 rocket, one of the two primary sources for U.S. military space launches under the Evolved Expendable Launch Vehicle (EELV) program.
Patrick Louden, a spokesman for Pratt & Whitney, deferred to Lockheed Martin for comment regarding the RD-180 engine.
Lockheed Martin recently completed the acquisition of the technical data needed to build the engine domestically, and is in the process of translating that information into English, a company official said. That process is expected to be completed by the end of 2004, the official said.
Following completion of the translation, officials from Lockheed Martin and RD Amross, a joint venture between Pratt & Whitney and RD-180 engine-maker NPO Energomash of Khimki, Russia, will train U.S. workers in the skills they will need for full-scale production and launch operations of the engine, the Lockheed Martin official said.
U.S. and Russian government negotiations on technology transfer and control issues, which played a part in delaying the RD-180 co-production schedule, also have been completed, the Lockheed Martin official said.
U.S. policy requires the establishment of a domestic RD-180 production line in order to avoid dependence on Russia for launching military and intelligence satellites.
The Pentagon had expected the domestic production line to be ready in 2005, but that schedule was pushed back by at least three years in 2001 for reasons that also included the collapse of the commercial launch market, which reduced the number of Atlas 5 rockets that Lockheed Martin planned to build.
In the meantime, Lockheed Martin has stockpiled 18 of the Russia-built engines, enough for several years worth of missions, the Lockheed Martin official said.
While the Pentagon hopes that co-production will begin in 2008, Lockheed Martin still has reservations about the concept.
"Until the demand increases in the commercial and U.S. [government] launch market, the full capability of a second-source engine facility only would increase the excess capacity facing the space propulsion and launch industry today," the Lockheed Martin official said.
The weak commercial launch is expected to drive up the cost of future EELV launches by as much as 50 percent, the senior Pentagon official said. This cost growth triggered an internal Defense Department review that looked at whether less expensive options exist for its space launch needs.
The review, chaired by Michael Wynne, acting undersecretary of defense for acquisition, technology and logistics, concluded April 26 that the Pentagon should continue to spend whatever is necessary to keep both Lockheed Martin and Boeing in the launch business.
However, Wynne directed the Air Force to study whether the notion in its Space Launch Modernization Plan, which was developed in 1994, that high reliability requires high launch rates still holds true today, the senior Pentagon official said.
Comments: jsinger@space.com