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Welcome everyone ! In this thread I'll review my (second) take on the famous STS Challenge. My first participation was more than a year ago, and I'm starting a new one, which shall include many things I've learned about building rockets since then. I'm focusing on modules integration, packaging solutions and good-looking contraptions more than trying to be as realistic as possible. There is no mods in this sandbox but Chatterer. This might be pic heavy because I want to describe every part of the first flight to show how the craft handle. Album list on imgur : STS 1 : Deploying 40t. payload STS 2 : 6 Geostationnary relays STS 2b : Recovering the 40t. payload STS 3 : Téléscopâté on solar orbit ! STS 4 : High altitude crew rescue STS 5 : Minmus Space-Station : Propulsion Module STS 6 : Hab Module STS 7 : Science Module STS 8 : Second Science Module, Station Complete ! STS Minmus 1 : First steps STS Moho-Duna because why not STS Duna Bis : 2 Shuttles + Outpost The spacecraft is named Sh(uttle)Or(biter)Pa(ck), it is a combination of many improvements I had to make to my previous shuttles. ShOrPa (Standard) main features are : _1.5 Mk3 bay & Mk3 ramp, front bay is facing ground to use drills or dump stuff on surface. _SSTO capacity. _Low TWR with only 4 Nukes (140+t. empty), +5000dV. _Fuel tanks and engines are modulable if missions requires higher thrust (Tylo?). Orbiter main features : _Total mass is 1065t. (without cargo). _2x6 Kickback SRB clusters (1000dV). _6+1 Vectors (2500dV) + 4 Rapiers to assist lift-off. Here is a post which shows a few details of the design : STS 1 / 1b : Launch Launchpad : Ignition & lift-off ! SRB Sep : Burning to raise Ap : External tank separation : Final orbit 150x150 : Payload separation (40t. dummy tanks) : Re-entry burn, quite hot ! Coming down on KSC, just at the horizon : Heavy flare to kill orbital velocity (max G during mission was only 4.8): Turn around to line up on runway : Final flare : Parachutes : Landing :