Actual numbers, haven't tried to calculate. But the heat load due to atmospheric friction would be immense and immediate. The US built an antiballistic missil

Actual numbers, haven't tried to calculate. But the heat load due to atmospheric friction would be immense and immediate. The US built an antiballistic missile system that included a missile called Sprint [1]. It accelerated at 100G and developed temperatures of over 3000°C less than 5 seconds after launch. A video here [2]. It's a formidible engineering challenge to make a vehicle and payload that will survive such a difficult flight regime with commercially attractive economics. At this point, I don't understand SpinLaunch's advantage over earlier projectile systems (Gerald Bull) or current launchers like SpaceX. This will be interesting to follow. [1] https://en.wikipedia.org/wiki/Sprint_(missile) https://en.wikipedia.org/wiki/Sprint_(missile) [2] https://www.youtube.com/watch?v=msXtgTVMcuA https://www.youtube.com/watch?v=msXtgTVMcuA