主题：【原创】“X37B”是战略平衡破坏者？ -- 瑞士
家园 人家是航天口雇佣的巨魔狂战士，发一个贴子一美分呢。 Hes a paid rightwing tr0ll who makes 1 cent per post from the Space. Hes like the Terminator -- he doesnt know reason, he doesnt know logic, and he wont stop, ever, until hes made his $20 bucks for the day.
家园 X37B在气动上的特点 X37B在气动上的特点：
把YF-23的蝶形尾用在了空天飞机上。
我觉得X37B的蝶形尾明显是用向上的正升力配平这个空天飞机。所以X37B的主机翼可以很小。
这个外形应该算是比航天飞机进步的地方。
家园 人民日报---国防大学教授谈X37B的军事 家园 《瞭望》 ----专家:太空战机搅乱太空 助美建两小时全 家园 这篇文宣很好 虽然和我的贴子有点出入，但大意上相同，建议大家看看
家园 请教楼主和大家对那个高超音速的飞机怎么看？ 前一段这个东西好像试验到了七倍音速？听说这玩艺的目标是十倍音速以上。这玩艺是在大气层内用吸气发动机飞行，不是用火箭。
家园 htv-2目前资料非常少 我也在美国网站上查找过，发现美国保密做的很好，细节非常少。
希望下面这个网页对你有帮助
目前美国对X37B做的比较公开，但HTV-2因为资料非常少，就其外型来看，应该是采用乘波体设计，另外使用超燃发动机。快速机动的HTV-2和长期在太空巡航的X37B形成互补作用。
After a Phase I evaluation of four competing CAV/HTV design proposals, Lockheed Martin received the sole Phase II contract in August 2004 to develop and build the HTVs for the Falcon program. The initial HTV design (HTV-1) was planned to be flight tested using an existing booster in September 2007, and was to reach a speed of Mach 19 at 30-45 km (19-28 miles) altitude. However, in May 2006 the construction of two HTV-1 vehicles was cancelled because subcontractor C-CAT had severe problems with delamination of the curved leading edges of the vehicle's aeroshell. The Falcon program will instead proceed directly to the HTV-2 (q.v. below).
Image: USAF/DARPA
HTV-1
Phase III of the Falcon program, originally planned to run from 2007 to 2010, is going to further develop the HTV and integrate it with the SLV. The second and third generation HTV designs (HTV-2 and HTV-3) are to incorporate further improved aerodynamic configurations, thermal protection systems, guidance, navigation and control systems. The vehicles are going to be about 3.5-4.5 m long and weigh about 900 kg. HTV-1 through -3 designs have an increasingly "waverider-like" shape for increased L/D (lift/drag), increasing flight duration and re-entry cross range. HTV-2 will be an expendable Mach 20+ design, but HTV-3 will be a fully reusable vehicle with a design speed of about Mach 10 at 40000 m (130000 ft). Although HTV-1 and -2 are unpowered designs, it's possible that the reusable HTV-3 will use a scramjet engine. At the time of this writing, two HTV-2 launches (HTV-2a and HTV-2b) are planned for 2009. The boosters will be Orbital Sciences Minotaur IV 4-stage rockets. A launch schedule for HTV-3, and whether this vehicle will actually use one of the Falcon SLV boosters, has not been published so far.
Image: DARPA
DARPA HCV design concept
After completion of Phase III, the Falcon program will be completely transferred to the Air Force.
外链图片需谨慎，可能会被源头改家园 这玩艺和X-43有什么关系？ 家园 关系？ 1、管理单位不同
X43是NASA，HTV-2A是DARPA
2、密级不同
对HTV-2保密相当详尽，X43目前看到相对比较松
3、发动机不同
X43装有发动机，目前HTV仅是空壳
4、两者虽然隶属不同单位，好象都是1996年高超音速飞机计划的延续
5、都运用乘波
有些想不起来了，想起来再补充
家园 HTV的具体划分让很多人都搞混了 HTV-1、2都是不带动力的，HTV-3计划带动力已经取消