In the standard world of Kerbal Space Program, the air is often described as "soupy." Drag is a simple calculation of part mass, and as long as you have enough thrust, almost anything—including a literal flying brick—will reach the stars.
FAR introduces the , a suite of graphs and numbers that look more like an engineering degree than a video game. ferram aerospace research
In "stock" KSP, breaking the sound barrier is just a matter of throttle. In FAR, it is an event. As you approach , drag spikes exponentially due to wave drag . Designing for this requires "Area Ruling"—shaping your fuselage to ensure the cross-sectional area changes smoothly—or your plane may simply refuse to go any faster, no matter how many engines you bolt on. 3. Stability is Earned, Not Given In the standard world of Kerbal Space Program,