Like Kerbal Space Program? Then check out this book: Apollo. Or if you're more interested in the science behind spaceflight, you might like this: Fundamentals of Astrodynamics

KSP Parts

Title Package Author Cost Mass Crash Tolerance Drag Max Temp
TR-18B Stack Decoupler + Shroud Silisko Edition HarvesteR / NovaSilisko 250 0.1 9 0.2 3400