The suit of Knight of Sidonia are literally one huge thruster with a mech slapped on it. So I think it count.>>17149631>>17149728
In case someone was too lazy to google it: it's a one-shot OAV created for mech porn, any semblance of plot is just a pretext.>>17148565
All MS are propelled by nuclear fusion, the pic is just using nuclear as a buzzword to say "more power".
Also the "orion" you talk of is nuclear pulse engine, literally surfing on wave of explosion it's also a bad idea.