One off my favorite project topics...
NCR Shuttle...$1100 on Ebay..? :y::eyepop: A lot of money for a 1/72nd
Larger versions?
I have a 1/48th RC shuttle, scratch built (all balsa wood) from Luther Hux plans (1981)- saw him fly both of his RC versions - dropped off his twin engine "Snapshot Twin" RC plane, so I know it flies.
Haven't invested in the ET components yet, but got SRB nc 's from Sandman.
Luther Hux and his shuttle
The Sheri's Hot Rockets space shuttle is a fair representation of what can be done, along with George G's many variants.
As long as you aren't trying to go finless, and don't attempt to have motors in the scale locations, should be doable. Single motor in the ET - offset, fin extensions off the SRBs, - like a big upscale of the old Estes kit version.
If you should find one of Sheri's kits ..best you read Chan's kit/build review:
https://www.rocketreviews.com/sheris-hot-rockets-cjs-aviation-space-shuttle-162-by-chan-stevens.html
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Light weight helps.......Scott Todds/ University High School in Fla. - SRBs were all foam, no motors in SRBs, they had no fin extensions...they flew the whole thing up, under radio control....
"Many have tried, many have failed".
Rolf 's attempt....
I think Andy Woerner's is one that actually worked....minimum fin area, motors in scale locations.
Hanger 11 had a prototype vacuum formed plastic shuttle kit...not sure it ever flew, beyond a glide test.