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[美国发射] 2018年2月7日04:45,Tesla公司首辆量产车由Falcon Heavy自KSC发射,进入太阳轨道

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wsl20005 发表于 2017-7-21 09:05 来自航空航天港手机版! | 显示全部楼层
Elon Musk is tamping down expectations about the maiden launch of SpaceX's huge new Falcon Heavy rocket.

There's a "real good chance" the vehicle won't make it to orbit during the liftoff, Musk said Wednesday (July 19) at the 2017 International Space Station Research and Development (ISSR&D) conference in Washington, D.C. That launch is expected to take place later this year from Florida's Space Coast.

"I hope it makes it far enough away from the pad that it does not cause pad damage. I would consider even that a win, to be honest," Musk told NASA ISS program manager Kirk Shireman, who interviewed the SpaceX CEO onstage at the meeting. "Major pucker factor, really; that's, like, the only way to describe it." [SpaceX's Falcon Heavy Rocket in Images]

The two-stage Falcon Heavy is based on SpaceX's Falcon 9 rocket, which has been ferrying payloads to space since 2010. The Heavy's first stage consists of two Falcon 9 first stages strapped to a central "core," which is itself a modified Falcon 9 booster.

Like the Falcon 9, the Heavy is designed to be reusable.

When the 230-foot-tall (70 meters) Falcon Heavy is up and running, it will be capable of lofting up to 60 tons (54 metric tons) to low-Earth orbit and 24 tons (22 metric tons) to geostationary transfer orbit, making it the most powerful rocket since NASA's famous Apollo-era Saturn V launcher, SpaceX representatives have said.

SpaceX has been developing the Falcon Heavy for years. The work has proven to be "way, way more difficult" than SpaceX originally expected, Musk said.

"At first, it sounds really easy: Just stick two first stages on as strap-on boosters. How hard can that be?" he said. "But then everything changes. All the loads change, aerodynamics totally change, you've tripled the vibration and acoustics."

The loads imparted on the center core during Falcon Heavy launches will be "crazy," Musk said, "so we had to redesign the whole center-core airframe. It's not like the Falcon 9, because it's got to take so much load."

In addition, it's impossible to fully test many aspects of the vehicle on the ground, he said.

So, while Musk stressed that he thinks the Falcon Heavy will prove to be "a great vehicle," the initial liftoff could be rocky.

"I encourage people to come down to the cape to see the first Falcon Heavy mission," he said, referring to Florida's Cape Canaveral. "It's guaranteed to be exciting."

SpaceX has not yet announced an official date for the launch. Musk recently suggested on Twitter, however, that the liftoff may happen in September or October.
oaki911 发表于 2017-7-21 14:05 来自航空航天港手机版! | 显示全部楼层
wsl20005 发表于 2017-7-21 09:05
Elon Musk is tamping down expectations about the maiden launch of SpaceX's huge new Falcon Heavy roc ...

九十月份呀,马上就到了,预祝首飞圆满成功!
ddgs_wlz 发表于 2017-7-21 15:41 来自航空航天港手机版! | 显示全部楼层
hkhtg090201 发表于 2017-7-20 08:58
不炸发射台就是胜利, 这种话Musk都说出来了,可见FH的危险性,

是啊,不炸发射台就是胜利,载荷入不入轨不重要了。这次马斯克比以前少有的谨慎
dadao 发表于 2017-7-22 08:43 | 显示全部楼层

                               
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跆拳道大灰狼 发表于 2017-7-22 18:30 | 显示全部楼层
龙珠已经集齐,可以召唤神龙了!图片拍摄于LC-39A的HIF门口,注意工作人员身上有FH两个大字的T恤。

QQ图片20170722182654.jpg

QQ图片20170722182657.jpg

黑与白 发表于 2017-7-22 19:38 | 显示全部楼层
跆拳道大灰狼 发表于 2017-7-22 18:30
龙珠已经集齐,可以召唤神龙了!图片拍摄于LC-39A的HIF门口,注意工作人员身上有FH两个大字的T恤。

要不39为啥停下升级发射台?
跆拳道大灰狼 发表于 2017-7-22 21:10 | 显示全部楼层
黑与白 发表于 2017-7-22 19:38
要不39为啥停下升级发射台?

这波只是拆除RSS,FH的适应性改装要到LC-40恢复之后,毕竟炫技不能影响吃饭。
dwy 发表于 2017-7-22 21:53 来自航空航天港手机版! | 显示全部楼层
跆拳道大灰狼 发表于 2017-7-22 21:10
这波只是拆除RSS,FH的适应性改装要到LC-40恢复之后,毕竟炫技不能影响吃饭。

FH级间段除了四根可折叠拉杆外,两者直接是不是还有个Y型小辅助支杆?就是下面这张图上显示的?

还有,下面发动机舱下连接拉杆是像级间段拉杆一样每侧两个,共四根拉杆,还是一共就两个拉杆(图上看不出来)?
下面这张图是国外网友制造的效果图,不知有多少符合实际。
fpgeuh21we0z.jpg
 楼主| cmj9808 发表于 2017-7-23 14:35 | 显示全部楼层
dwy 发表于 2017-7-22 21:53
FH级间段除了四根可折叠拉杆外,两者直接是不是还有个Y型小辅助支杆?就是下面这张图上显示的?

还有 ...

应该是每侧两个,看起来这两组拉杆是帮助助推器分离的,Y型支架才是连接承力点
dwy 发表于 2017-7-23 21:23 来自航空航天港手机版! | 显示全部楼层
cmj9808 发表于 2017-7-23 14:35
应该是每侧两个,看起来这两组拉杆是帮助助推器分离的,Y型支架才是连接承力点

以前不是说发动机舱的下拉杆才是承力点吗?而且为了传导助推到芯级的力,专门加强了芯级发动机舱。
为什么级间断Y型才是承力点?
你说的是下面四个拉杆,还是级间断上面的四个可折叠拉杆?是说级间断拉杆吧。因为级间断拉杆可折叠,所以无法承接大的推力,只是连接分离机构作用?
ddgs_wlz 发表于 2017-7-27 16:29 | 显示全部楼层
cmj9808 发表于 2017-7-23 14:35
应该是每侧两个,看起来这两组拉杆是帮助助推器分离的,Y型支架才是连接承力点

Y型支架应该不是主受力点,最多是个上部稳定支撑点。助推器推力在底部,通过结构直接传到芯级底部,如果还传到火箭上部,那火箭上部还要加强
liyue1997b 发表于 2017-7-27 18:04 | 显示全部楼层
FH 测试过3个箭体一起点火吗,F9 不都做地面点火测试嘛,如果地面点火测试通过,就不用担心箭体强度不够了
zimu 发表于 2017-7-27 18:15 | 显示全部楼层
liyue1997b 发表于 2017-7-27 18:04
FH 测试过3个箭体一起点火吗,F9 不都做地面点火测试嘛,如果地面点火测试通过,就不用担心箭体强度不够了

没有测试条件, 首射就是第一次27发同时点火.
dwy 发表于 2017-7-27 20:21 来自航空航天港手机版! | 显示全部楼层
zimu 发表于 2017-7-27 18:15
没有测试条件, 首射就是第一次27发同时点火.

老马说静态点火会多搞几次,按对称分布2发2发逐步点火,直到全部点火,不过应该很快的,是不是保险起见,怕万一27发同时点火,有的推力不均导致卡不住斜着飞了。。
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 楼主| cmj9808 发表于 2017-7-27 20:51 | 显示全部楼层
ddgs_wlz 发表于 2017-7-27 16:29
Y型支架应该不是主受力点,最多是个上部稳定支撑点。助推器推力在底部,通过结构直接传到芯级底部,如果 ...

是的,Octweb上应该也有类似的装置,我的意思是这个装置是承力点,两对可收回的横杆是助推分离用的。Octweb的是主承力装置,级间段上的这个也会承担一部分,

@dwy
dwy 发表于 2017-7-27 22:45 来自航空航天港手机版! | 显示全部楼层
cmj9808 发表于 2017-7-27 20:51
是的,Octweb上应该也有类似的装置,我的意思是这个装置是承力点,两对可收回的横杆是助推分离用的。Octw ...

Octweb上的这个主承力结构看不出来能不能折叠,感觉既然是主承力结构,折叠会不会影响受力效果,毕竟传递5,6百吨力,不过如果不折叠,支腿展开时会不会碰到。
 楼主| cmj9808 发表于 2017-7-28 12:16 | 显示全部楼层
dwy 发表于 2017-7-27 22:45
Octweb上的这个主承力结构看不出来能不能折叠,感觉既然是主承力结构,折叠会不会影响受力效果,毕竟传递 ...

主承力结构并不是太大的突起,不需要折叠,需要折叠的是助推器分离推杆
dwy 发表于 2017-7-28 12:42 来自航空航天港手机版! | 显示全部楼层
老马推: 定于11月发射FH.

Falcon heavy maiden flight this november.(instagram.com)
 楼主| cmj9808 发表于 2017-7-28 12:56 | 显示全部楼层
dwy 发表于 2017-7-28 12:42
老马推: 定于11月发射FH.

Falcon heavy maiden flight this november.(instagram.com)

按照NASA的惯例,+20%余量,估计在12月发射。
 楼主| cmj9808 发表于 2017-7-28 12:59 | 显示全部楼层
再次确认助推器返场,芯级着船
Side booster rockets return to Cape Canaveral. Center lands on droneship.

https://twitter.com/elonmusk/status/890774088104370176
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