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Rocket lab announce reusable first stage to be caught by helicopter

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Old 6th Aug 2019, 23:26
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Rocket lab announce reusable first stage to be caught by helicopter

Proving once again that size and location are no barriers to innovation.
Have a look at this video from about 14.36 onwards - sequence shows the first stage deploying a parafoil, presumably steerable, and then being plucked from the sky by a helicopter - similar to the way the film cannisters from the first spy satellites used to be grabbed by an aircraft.

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Old 7th Aug 2019, 05:35
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Got from 14:36 to 16:10 and some bloke still waffling.
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Old 7th Aug 2019, 06:07
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Try from 9:40 through to about 11:20. It'll be interesting to see if they can pull it off, nothing like putting a helicopter in the path of a re-entering booster! All the best to them.
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Old 7th Aug 2019, 06:10
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Kind of innovation backwards and compared to Space-X pinpoint landings, Rube Goldberg. (have not watched video)

I know why I like their landings so much - They're the cover of most sci-fi magazines from youth. Spacecraft arrives, points upright and lands gently on fins.
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Old 7th Aug 2019, 11:04
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Total empty weight of the first stage is under a ton, so the recovery method is feasible, but not scalable......

Rocket Lab Electron Data Sheet
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Old 7th Aug 2019, 12:02
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"Stupid Easy!".......now what could possibly go wrong with a concept like this?

NASA re-used solid rocket boosters for the Space Shuttle as I recall....and landed them in the sea by parachute.....then used a recovery vessel to retrieve them.

Re-use of whole SRB's was rare...but thousands of parts we're inspected, re-worked....and flown again on later missions.
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Old 7th Aug 2019, 13:41
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Stupid Easy!".......now what could possibly go wrong with a concept like this?
It’s an old well practiced technique, previously used to capture satellite film capsules, though in those days they used C-119 then the JC-130A rather a helicopter.

https://www.cia.gov/library/center-f...ober-1984.html




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Old 7th Aug 2019, 13:51
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Two different kettles of fish here.

Interesting concept but the devil is in the details.

Starts with the Intercept Cone....height, speed, distance from the Helicopter's actual location....and despite the improvement in "accuracy" .... a miss will result in a "Miss" and the booster winding up in the water.

Then what?

We chased Torpedoes in the Rassay Sound using helicopters but in my time there we never retrieved one......rocket boosters under canopy will. be a bit more difficult.

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Old 7th Aug 2019, 14:19
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Old 7th Aug 2019, 23:55
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That said - the video showed a parafoil rather than a round parachute, and I think that's intentional.
They're steerable - which would suggest the booster could be maneuvered to aid capture.
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Old 8th Aug 2019, 11:44
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thats likely alot of math to figure out where to place your recovery equipment...im not that good at math.
good luck to them
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Old 8th Aug 2019, 12:45
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PDG Helicopters

I think you will find PDG Helicopters did this a couple of years ago. Take a look at their You Tube Channel.
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Old 8th Aug 2019, 13:30
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The proof is in the pudding as they say.

Yes...it "can" be done

But....saying it and doing it are two very different things.....and saying it is "Stupid Easy" is a bit braggadocios of the fellow I am thinking.

But then I remember trying to hit a streamer made by a falling Bog Roll and having difficulty doing that in an aerobatic airplane!
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Old 8th Apr 2020, 22:24
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Seems like they've had a successful proof of concept

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Old 10th Apr 2020, 09:50
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Great work by the pilot.

A little slow though getting the hook in place but looked steady enough.
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Old 10th Apr 2020, 10:42
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A lot simpler when they are right on the spot and see it released.

It will be a bit different when they are trying to predict a space re-entry and get the chopper within a bull's roar of it.
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Old 10th Apr 2020, 11:08
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Why not add a flotation device and a 406 beacon, let it parachute into the water and then recover it?
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Old 10th Apr 2020, 12:53
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Originally Posted by [email protected]
Why not add a flotation device and a 406 beacon, let it parachute into the water and then recover it?
You should know which effect saltwater has to lightweight metal constructions like rocketboosters...

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Old 10th Apr 2020, 13:00
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We have been further ahead already it seems.

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Old 10th Apr 2020, 16:50
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Looks like they made a giant, flying suppository.
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