Hi. I did use that thread as a basis for my question, but it is quite a general problem affecting flight physics. I will try again, but feel free to ask for anything specific that is missing. What Happens: Craft descends extremely slowly at low altitutes (few 1,000m) in Kerbin atmosphere, when empty of fuel (zero thrust) and no parachute deployed. It descends tail-first extremely slowly through the last few thousand feet at <1m/s decent rate (oscillating between 0-5m/s), taking >5mins to pass the last 300m despite zero thrust. When the parachute is deployed decent rate increases immediately to a more normal 10m/s. Prior to chute deployment, if the craft is manually pointed nose-down the decent rate accelerates rapidly, which can be converted into a zoom-climb with no thrust. Mods / Add-Ons: None Steps to Replicate: - Build a small rocket consisting of a craft: Stayputnik, FL-T400 fuel tank, LV-T30 liquid fuel engine, large inertial stabiliser, 4 symetrically placed winglets, two battery packs and a parachute a launcher: 4 solid fuel boosters in two stages - launch, flying until all three stages have depleted of fuel (craft usually goes into an uncontrolled spin after pitching to 45 degrees during the second stage) - Do not deploy parachute. Result: Craft will descend rapidly until the last few 1000m, where it will slow almost to a standstill and descend slowly all the while it is orientated with the (dead) liquid engine pointing downwards. Fixes/Workarounds: Point craft nose down to temporarily increase descent rate. Other Notes/Pictures/Log Files: None