Apollo-The Last Few Miles Home - AIAA Info

ELS Configuration Evolution
• Pre-block 1—started out
– Boilerplates, 7,800-8,150 lbs.
– Single 13.7 ft. drogue
– 3 pilot chutes, 10 ft. diameter
– 3 mains, 88.1 ft. diameter, 72 gore, 1.0 D O lines, single reefing
– 4-leg harness attached to top of tunnel, textile risers, confluence fitting
• Block 1
– No docking provisions, 9,500 lbs., intended 1 st manned flight
– 7.2 ft. diameter pilot chutes
– Slotted mains, 83.5 ft. diameter, 68 gores, midgore reefing, 1.4 D O lines
– 2-leg harness on deck
– Dual drogues, reefed 8 seconds
• Block 2
– Docking provisions, redesigned forward compartment, 11,000 lbs.
– Steel risers
– Flowerpot
• Block 2 HW
– 13,000-13,500 lbs.
– High density packing
– Special materials
– 2-stage main reefing, 6 & 10 seconds
– Larger (16.5 ft.) drogues reefed 10 seconds
– Beefed up pilots
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