Forums: Skydiving: Skydiving History & Trivia:
'Parafoil vertical lift mechanism'

 


Quagmirian  (A 110392)

Feb 13, 2013, 11:43 PM
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'Parafoil vertical lift mechanism' Can't Post

Anybody know what this is? From the drawings it looks really... odd.

http://www.freepatentsonline.com/4634080.pdf


EnricoPalazzo

Feb 14, 2013, 12:27 AM
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

Great Scott!
A ram-air triplane!
I'd really love to see the deployment sequence. Or come to that, the packing procedure of one of those...
Though I like the idea of parachutes on a truck. Anyone care to take this thing to Bridge Day?


airtwardo  (D License)

Feb 14, 2013, 6:01 AM
Post #3 of 15 (1395 views)
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Re: [EnricoPalazzo] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

It's not a parachute ~it's a 'Lifting Devise'


Robert99

Feb 14, 2013, 7:01 AM
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Re: [airtwardo] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

In reply to:
It's not a parachute ~it's a 'Lifting Devise'

I don't know about the "Lifting", but it is certainy a "Devise".

I second the "Great Scott" exclamation.


jackwallace  (Student)

Feb 14, 2013, 8:55 AM
Post #5 of 15 (1356 views)
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

Dam you Red Baron, you're back again.


airdvr  (D 10977)

Feb 14, 2013, 10:51 AM
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Re: [airtwardo] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

Twardo, you probably have a harness/container somewhere that could handle the pack volume.


airtwardo  (D License)

Feb 14, 2013, 11:35 AM
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Re: [airdvr] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

In reply to:
Twardo, you probably have a harness/container somewhere that could handle the pack volume.

I thought the 'truck pic' WAS the harness & container! Sly


jimartle

Feb 14, 2013, 3:10 PM
Post #8 of 15 (1295 views)
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

Looks like a CRW rig for somebody with no friends.


Krip  (Student)

Feb 14, 2013, 9:16 PM
Post #9 of 15 (1274 views)
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

Sky hook

Might have been designed for the military for their equipment to cross damaged bridges etc.

The equipment provides the fwd speed the tri plane provides the lift.

Quote:
Pvt drive the truck over the cliff the canopies will get you to the other side


airtwardo  (D License)

Feb 14, 2013, 9:46 PM
Post #10 of 15 (1272 views)
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Re: [Krip] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

In reply to:
Sky hook

Might have been designed for the military for their equipment to cross damaged bridges etc.

The equipment provides the fwd speed the tri plane provides the lift.

Quote:
Pvt drive the truck over the cliff the canopies will get you to the other side

If the drag wasn't too bad the lift would lighten the load for better gas Slymileage!


StephanieWolfe

Feb 15, 2013, 7:48 AM
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Re: [airtwardo] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

It's gonna be really ugly when it stalls...


Krip  (Student)

Feb 15, 2013, 8:18 AM
Post #12 of 15 (1245 views)
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Re: [StephanieWolfe] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

In reply to:
It's gonna be really ugly when it stalls...

Orders are orders.Unsure

There are plenty of pvt'sPirateUnsureMad


riggerrob  (D 14840)

Feb 15, 2013, 1:20 PM
Post #13 of 15 (1215 views)
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Re: [jackwallace] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

In reply to:
Dam you Red Baron, you're back again.

........................................................................

Triplanes only enjoyed a short service life, near the end of the First World War.
Sopwith's Triplane was only manufactured during 1917 and was soon replaced by (biplane) Sopwith Camels.
Fokker only built DR1 tri-planes between id-1917 and the end of the war. Fokker triplanes were unstable ... er extremely manuverable ... but slower than contemporary biplanes.
No tri-planes were manufactured - in significant numbers - after WW1.


riggerrob  (D 14840)

Feb 15, 2013, 1:23 PM
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

The primary disadvantage of biplanes and triplanes is that the high pressure area - below the top wing - interferes with the low pressure area above the lower wing.
This interference reduces lift and increases drag, steepening the glide ratio.
The only reason early airplanes were biplanes, was that biplanes could be built much lighter than mono-planes.


Andy9o8  (D License)

Feb 16, 2013, 5:54 AM
Post #15 of 15 (1185 views)
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Re: [Quagmirian] 'Parafoil vertical lift mechanism' [In reply to] Can't Post

I always wondered where ground launching originated.



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