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Author Topic: Parasailing: Now with rocket science!  (Read 1403 times)
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Lee S
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« on: June 07, 2018, 07:47 PM »

Heard of this a while back, but I thought I'd wait until some pictures were posted. Some of the more space geeky forum members might be aware that SpaceX is trying to find a way to recover rocket fairings now too, instead of just letting them plunge into the sea. So, they have a boat with a giant extendable net above it that has been trying to catch one. But, boats aren't that quick on the water, so in a "think outside the box" engineering style, they now are trying to fly the fairing to the boat, using controllable parasails.

So, if you do fly a dual line or quad line parafoil, now you've got company.
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« Reply #1 on: June 07, 2018, 08:56 PM »

The U.S. military has been using steerable chutes since 2006; wonder is Musk is using off-the-shelf.
Joint Precision Airdrop System
... The steerable parachute or parafoil is called a "decelerator," and gives the JPADS system directional control throughout its descent by means of decelerator steering lines attached to the Autonomous Guidance Unit (AGU). They create drag on either side of the decelerator, which turns the parachute, thus achieving directional control. ...
JPADS involves four increments, categorized by the weight of the cargo to be dropped:
Increment I: JPADS-2K / applies to loads up to 2,200 lb / classified as the “extra light” category / commensurate with Container Delivery System (CDS) bundles.
Increment II: JPADS-10K / applies to loads up to 10,000 lb.
Increment III: JPADS-30K / applies to loads up to 30,000 lb.
Increment IV: JPADS-60K / applies to loads up to 60,000 lb.

JPADS is reported to be accurate to 50–75 metres (164–246 ft), ...
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