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XB-1's wings are officially closed out

blog.boomsupersonic.com

31–40 of 180 posts

Re: XB-1's wings are officially closed out

#31
post #3

I keep wondering if planes could benefit from the new materials developed by SpaceX. If they really have a stainless steel that's significantly lighter, it could be a game changer.

The entire 7 meter wing assembly weighs like 230kg. No way in hell you're getting that with stainless steel with any sort of rigidity.

Re: XB-1's wings are officially closed out

#32

This is quite scary for a non-engineer. You're telling me that this little supersonic plane has the whole wing structure held together by a handful of 4mm thick metal struts, manually glued to the wing surface, with wire pulleys running on the inside :O

you should see how most of the internet is glued together :)

Re: XB-1's wings are officially closed out

#33
post #18

Earlier quoted context omitted.

Yea, not very scientific. Seems like ultrasonic tests would be good here. I think they do something similar to check welds on ships.

Ultrasound inspection is very common for multi-layer composite construction. There are large machines which transmit the ultrasound through a water jet, for use in mapping the characteristics of curved surfaces. This water jet ultrasound non-destructive testing (NDT) is used in aerospace for carbon laminates. That said, 'tapping' is an acoustic inspection technique, and can get good results. I am not sure why they se…

They show some portable ultrasonic pictures on the build link someone posted above[1] (reposted here for clarity).

[1] https://boomsupersonic.com/xb-1/build

Re: XB-1's wings are officially closed out

#34
post #32

This is quite scary for a non-engineer. You're telling me that this little supersonic plane has the whole wing structure held together by a handful of 4mm thick metal struts, manually glued to the wing surface, with wire pulleys running on the inside :O

you should see how most of the internet is glued together :)

//causes obscure network latency issue, fix this later

Last commit, 7 years 6 months ago

Re: XB-1's wings are officially closed out

#37

This is quite scary for a non-engineer. You're telling me that this little supersonic plane has the whole wing structure held together by a handful of 4mm thick metal struts, manually glued to the wing surface, with wire pulleys running on the inside :O

Building a plane in my garage. You'd be surprised how minimal yet how strong a lot of these structures are. The vast majority of the material I use is thinner than a credit card.

Re: XB-1's wings are officially closed out

#38
post #13

Having built a glass/kevlar/epoxy kayak, it's a little mind blowing to read about people building a supersonic airplane, using similar (albeit far^N more precise) techniques.

Did you build a pygmy kayak kit by any chance? I did, it was the most fun I've had building something in my life. The entire "epoxy plus fibrous material" is truly a winning solution for so many applications, apparently hyper-sonic wings, too!

Re: XB-1's wings are officially closed out

#39

Does this mean if any repairs are needed they'll have to rebuild the wing from scratch? I'd love to hear from someone at Boom what the main goals are for this aircraft. And how it will differ from the larger transport craft they're planning. Beyond size and capacity.

Carbon repairs are relatively easy as long as they don't damage any internal structure. IIRC they usually just patch and sand.

Re: XB-1's wings are officially closed out

#40

Does this mean if any repairs are needed they'll have to rebuild the wing from scratch? I'd love to hear from someone at Boom what the main goals are for this aircraft. And how it will differ from the larger transport craft they're planning. Beyond size and capacity.

The company's goal is overland supersonic flight. Profitably, ideally. To make that even a legal possibility means demonstrating they can be somewhat quieter than prior supersonic aircraft. This aircraft is a proof-of-concept.
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