Can someone explain how drag works, specifically the difference between the mounted air brake and a parachute. I thought I'd try to use many air brakes as an alternative to a parachute. test parameters: rocket up to ~1,500m decouple Ap = ~2km, deploy drag device at 1km Control: mk1 can, mk16 parachute (500 drag) landed 6.3m/s. safe landing 1st test: 16 air brakes (16 * 40 drag = 640 drag) which slowed a mk1 lander can to 18.5 m/s, mk1 exploded 2nt test: modify config file change deployedangle = 90. no chage 3rd test: reset deployedangle = 45, change deployeddrag = 80 (double, should be 1280 drag), 12.9m/s exploded 4th test: 32 air brakes @ 80 drag = 2560 drag. 9.7 m/s exploded 5th test: 48 brakes @80 = 3840. 8.4m/s exploded 6th test: 2 brakes @5000 (****s n giggle factor) drag = 4.3m/s safe landing Based on my tests, to equal the 500 units of drag of the mk16 parachute, I would need air brake drag of ~7,000 why is this so different?