Comments by "" (@charlesvan13) on "The Truth About SpinLaunch | Hype or Revolution?" video.

Experienced aerospace engineers would know this isn't going to work. There will be 10 million Kg of force on the rocket and centrifuge. It will fly apart. Even if they could get the centrifuge to work the rocket will superheat going mach 5 in the lower atmosphere. And how do you remove the 450 rpm of rotation from it.
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@DeputyNordburg Sending a camera tens of thousands of feet into the air isn't remotely near launching a satellite. As my other comment explains, this can't be done with a giant baseball pitching machine.
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@DeputyNordburg The full scale centrifuge will produce 10,000 g of acceleration. There's no materials that can handle that force. A small 2000 kg rocket will exert 20 million Kg of force, and spin at 450 rpm. It will fly apart. That doesn't even address other problems. They intend the device to be in a vacuum. But they have no way of obtaining a vacuum. The sheet covering the exit which the projectile can punch through can't hold pressure. Even if it's only 1/2 atm that's 7.5 lbs/in^2. That's 10,000 lbs per square foot. A strong door will destroy the rocket when it passes through it. But they wont even get there. Because there aren't materials strong enough to build a function centrifuge that can withstand that force. This is a scam. It will never launch anything.
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@DeputyNordburg First, rockets contain fragile components, such as tubing and tanks with explosive fuel. Second, the centrifuge will just fly apart before they reach the speeds they need. As I mentioned a 10,000 kg rocket will be exert 100 mill Kg of force on the centrifuge. That's greater than the weight of 200 fully loaded 747s. Even if they can find unobtainium that can withstand those forces, they'll need another equal mass to release. Otherwise the device will be subjected to 100 mill Kg of force when the rocket is released. This idea is Theranos for aerospace.
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@DeputyNordburg It's actually 1080 lbs per ft^2 at 1/2 atm. So if it's a 10 foot square exit, that's 10,800 lbs force. So they're not going to be able to do the vacuum as planned. But they're also not going to be able to spin a rocket up to the needed velocity.
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@angadsingh9314 Carbon fiber isn't strong enough. They need unobtainium. Say the rocket is 2000 kg, quite small. That will be 20 million Kg of force. They will need an equal weight projectile to launch the opposite direction (not sure where they're planning it will go. Into the ground?) otherwise the centrifuge will be hit with 20 million Kg of force blowing it up. So that's 40 million Kg of force. The weight of a battle ship. That's why I've already said this, this is just Theranos for aerospace.
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This is impossible. The centrifuge will have 10,000 g of force on the rocket. We don't have materials needed to withstand that. There will be millions of Kg of force on the centrifuge and the rocket. And at 450 rpm the rocket will be launched with nose over tail spin.
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This is a funding scam. There will be 10 million Kg of force on the rocket and centrifuge. Then when released it will be rotating end over end at 450 rpm. That's rotating 7 times per second. There are ideas that have engineering challenges. But this is beyond just mere challenges. We don't have materials that can withstand those forces.
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