FinioM

Made a new SSTO that works. Thanks to you all guys! Have a nice day!

Engines don't work in atmosphere. The runway is just a little sloped. I think they are blocked. I will rebulid the ship. I'll keep you updated.

Update: this rocket works https://imgur.com/BAfZOzV In Spaceplane Hangar nuclears have no thrust, because RAPIERs will use all liquid fuel first. I switch the calculator to vacuum - still no thrust. But when i move them to the bottom stage everything works, but only in SH, not in flight. Meanwhile my space station module has it's thrust unaffected. I tried launching without the module, still nuclears don't thrust.

I tried fixing it, but it didn't work. I don't think that thrust is blocked, as it works in the atmosphere, but only when it's on the bottom of staging tab. I also have sufficient TWR, fuel, but no burn time. I mean, how can it be blocked in vacuum, and not in the atmosphere? Have some screens: https://imgur.com/DQViMgJ https://imgur.com/FHrrCdY https://imgur.com/3lWAZYk

Thanks for replying! I hope this image is ok. Here is a link, it wouldn't let me insert an url. https://imgur.com/fIAVmzm

Hello. Nuclear engines on my SSTO produce no thrust, while using fuel in vacuum. In atmosphere it works fine. I understand the low TWR, and it's my second flight with this issue. Right clicking the engine shows regular parameters, ISP, thrust, fuel usage. Technicly they are fine, but not phisically. (IDK how to spell that). Hope you'll help me! Have a nice day!