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Nuclear Engines produce no thrust


FinioM
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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!

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1 hour ago, FinioM said:

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!

Do you have something placed beneath the nozzle, blocking the thrust?

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Can you post a clear picture (ie properly lit, from an angle that shows the motor) of the craft? You did a good job in providing essential information (it’s using propellant, it works in atmo) but having a picture would reduce the guesswork significantly.

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3 hours ago, Kerbart said:

Can you post a clear picture (ie properly lit, from an angle that shows the motor) of the craft? You did a good job in providing essential information (it’s using propellant, it works in atmo) but having a picture would reduce the guesswork significantly.

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

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33 minutes ago, The Doodling Astronaut said:

TWR maybe a little to low. Because I know that if your TWR is off it can cause problems. Plus Nuclear Engines have A REALLY LOW TWR

TWR will not do so, the engines indeed do but unless the engines on break the power should (must) be enough to move the ship

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Looking at the ship it looks like what others are telling you that the thrust is blocked. BAUT I learned this trick from @Matt Lowne. Just put your engines somewhere and offset them somewhere else. KSP weirdly doesn't take psychics on where the places are but where they were placed :/

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5 hours ago, The Doodling Astronaut said:

Looking at the ship it looks like what others are telling you that the thrust is blocked. BAUT I learned this trick from @Matt Lowne. Just put your engines somewhere and offset them somewhere else. KSP weirdly doesn't take psychics on where the places are but where they were placed :/

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

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12 minutes ago, FinioM said:

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

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. 

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7 hours ago, FinioM said:

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. 

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.

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4 hours ago, FinioM said:

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.

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

 

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