11. His rate of descent was fast, but not overly so. 12. This would increase the rate of descent to around 10, 000 ft / min. 13. Over the next 30 seconds, the plane's rate of descent increased, according to radar. 14. The rate of descent may have been greater than 5, 000 feet per minute. 15. The flight director system could offer an explanation for the regular rates of descent . 16. The effect of airspeed on the rate of descent can be depicted by a polar curve. 17. On the final approach leg, the pilot increased his rate of descent to build up energy. 18. During descent towards the surface of Venus, a parachute opened to slow the rate of descent . 19. Aviation experts said the normal rate of descent to ensure passenger comfort is 500-700 feet per minute. 20. The aircraft does not stall, but enters a nose-high mushing condition with a slow rate of descent .
