Jump to content

So I made an oxidizer-free cargo SSTO..


AeroGav
 Share

Recommended Posts

I've always liked to put NERVs on my spaceplanes,  but nonetheless accepted the received wisdom that their weight more than offsets any fuel saving to be made, especially if you're only going to low orbit.    Imagine my surprise when i built these large, mk3 low orbit transports,  and found i get better payload fraction then the pure chemical ones?

The cargo version made 43.7% payload fraction to 100km and feels like it could go further with extra fuel (the engines and wings can deffo lift more).

Obviously payload fraction isn't that big of a deal.    

Ease of use, part count, even time-to-orbit, are more important considerations.  The "Partridge" (43.7%) is probably a couple of minutes slower to orbit than Thor Wortansen's 35% payload fraction entry, and definitely has a higher part count for a lower payload.   I'd dispute it's at any "ease of use" disadvantage,  the huge wing area (necessary to make NERV-powered flight in upper atmosphere viable) makes for a very docile ship that's easy to take off, land and re-enter.

https://kerbalx.com/AeroGav/partridge

The key design parameters for an oxidizer-free SSTO are very different for a RAPIER-only one, less focus on weight reduction and fuel capacity, more on lift/drag.  Once you get a feel for it, it's not that hard.

Just wish i'd come to this realisation sooner..

pax ship -

https://kerbalx.com/AeroGav/Lusitania

qyRiiTR.png

Link to comment
Share on other sites

This thread is quite old. Please consider starting a new thread rather than reviving this one.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...