Originally Posted by
ancientaviator62
VX275, what height do they jump using the LLP ? I assume if it is that low then the reserve would be dispensed with.
The specification required a minimum (Operational) drop height of 250 ft which is why once the LLP looked like it was a goer there was a rapid program to compete and develop a Low Level Reserve Parachute (LLRP).
Before the LLRP came along there was a demonstration of the LLP at operational height and all up weights (into a lake for safety!) during which some of the jumpers chose not to carry a reserve. The time from leaving the aircraft to water impact was in the region of 9 seconds.