>>1302209>On a related note, how feasible would it have been for NASA to make the INT-20 reusable?I suspect Saturn V first stage would have simply too heavy for recovery with parawing.
When it comes to issues with Titan family rockets with solid rocket boosters, couple of the unmanned missions have led to pretty huge fireballs with rapid unplanned vehicle disassembly due to segmented boosters. While none of five segment UA1205 failed, two of the longer UA1207's ended up fireball. They were planning to use those larger 7 seven segment boosters on manned launch systems as well. Picture and video related.
https://www.youtube.com/watch?v=XXBl03wVHOYGenerally I do like Big Gemini proposal, but in my opinion NASA would have been better off with Apollo D and possibly upscaled version of it as follow up.
>>1302254Big Gemini was manufacturers proposal for NASA, using modified equipment from cancelled MOL.
>That's simply an opinion.That leads to massive cost escalation on the program every time manned launch goes boom. It also causes a risk of cancellation by politicians and major publicity issues among voters.