I decided to check, how deep is aerodynamic simulation was implemented in 3.10/3.11. So i took Avenger Titan, and decided to use it in simple test, as following: Climb to 20,000m above Hurston Orient ship in certain way Switch to Decoupled Allow ship to fall down to 1,000m, using input only to keep its orientation Measure speed (m/s) at height marks 16,000m; 11,000m; 6,000m; 1,000m Well, here are results: When ship is oriented horizontally (like in horizontal flight), fall speeds are 99; 79; 62; 52; at mentioned makrs (the higher atmosphere density, the slower falling. Good) When ship is oriented vertically (towards planet, 90deg), fall speeds are 211; 205; 160; 124; (twice faster, because frontal crossection is much more aerodynamic than belly. Excellent!) Finally, i decided to repeat falling when oriented horizontally, but having wings detached (safely and professionally) from hull. Fall speeds are 134; 106; 83; 67; (without wings, horizontally oriented Titan really falls with ~30% higher speed, due to lower crossection and drag. AWESOME!) Finally i decided, instead of decoupling, just disable ship and engines completely at 20,000m and allow to fall it down. To my pity i could not measure speed, but the thing which made me excited, was the fact that independently on the original orientation, during free fall Titan always smoothly rotated into vertical position towards the planet, and continued falling in that orientation, slightly fluctuating near it. I'm attaching here the chart, which shows dependency of falling speed on the altitude, for three mentioned above scenarios: Blue - falling while oriented horizontally Red - falling while oriented horizontally, WITHOUT WINGS Green - falling while oriented vertically towards planet (horizontal orientation, vertical orientation, and horizontal with detached wings). I'm really impressed how CIG finally made it in proper way! Just in case, here is link to album with screenshots with all these measurements https://imgur.com/a/I12UNa0 Also just in case, i measured the acceleration of free fall at 30,000m above Hurston - it really appeared to be ~1g - after 10 seconds of free falling, the ship accumulated speed ~100m/s (hard to do precise measurement of time for picking speed value). Next, i have some idea of "experiment" which probably will be able to provide the more or less precise (at least, with numerical value) the "aerodynamic quality" of any given ship. Will create a separate topic later about it, when/if it will be ready and provide sane results.