The title really states it all I'm a relatively new player despite owning the game for around a year now I just started playing it more. I've made a couple different designs all capable of hypersonic flight (1550m/s+) but none of them are too stable, turn to sharp and the whole thing explodes and they can't reliably hit it either. I'm doing a challenge with my friend to use only stock parts and air breathing engines to see who can make the fastest plane. This Post interested me but I can't seem to replicate the design of the aurora as there are discrepancies in the pictures. I was looking to see if I could make and improve it but I guess not so I decided to make a post asking for tips on how to make a stable and reliable hypersonic air breathing aircraft in language that wouldn't be difficult for someone who is relatively new to the game to understand. Thanks in advance!
[edit] The highest I've reaches so far is a bit over 1800 m/s but that one exploded right after because it was unstable and very twitchy. M replication of the aurora couldn't quite reach 1700m/s but was however much more stable. I'm having trouble trying to fuse them.