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Longest Freefall RC Skydiver

Our fun RC record attempts.

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pietermu
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Longest Freefall RC Skydiver

Unread post by pietermu »

Previous attempt 9 seconds @ Potgietersrus. Bushveld Flyin 2010.
Attempt so far 15 seconds @ Barnstormers.
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Re: Longest Freefall RC Skydiver

Unread post by TZN »

Ja,Ja,wil ook graag maar het nie n Hettie nie........ :lol:
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pietermu
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Re: Longest Freefall RC Skydiver

Unread post by pietermu »

Nou toe nou. Dan sal ek 'n plan maak dat jy ook 'n Hettie kry. Miskien draai ek die naweek in jou geweste. Weet nog nie verseker nie.
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Re: Longest Freefall RC Skydiver

Unread post by RiaanLR »

Fanie and myself made a free fall of 23 seconds on Sunday at Oudshoorn.
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Re: Longest Freefall RC Skydiver

Unread post by rcskydiver »

Jip and Riaan has bragging rights!! He opened even lower than I did!! I had about 3 seconds from pilot chute release to touchdown and he had about 2,5 seconds according to the video!! It is as close as you can get without hitting the deck!! I will post it on YouTube as soon as I receive it!!

We did this just to show how stable our divers are during freefall!! :wink:
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pietermu
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Re: Longest Freefall RC Skydiver

Unread post by pietermu »

Very nice Riaan and Fanie. We will try this sometime! 8)
So have you tried the unprepared opening to stop hitting ground level due to plane deciding its time for skydiver to get out on its own as the plane gets off the ground? [-o<
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Re: Longest Freefall RC Skydiver

Unread post by rcskydiver »

pietermu wrote:Very nice Riaan and Fanie. We will try this sometime! 8)
So have you tried the unprepared opening to stop hitting ground level due to plane deciding its time for skydiver to get out on its own as the plane gets off the ground? [-o<
Been there done that :? , was about 4 years ago, the rubber band slipped of release pin of the plane, not my plane if I may add, but ya it was interresting!! Since then I've never taken my eyes of the plane on the take-off and climb out!! :lol:
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Re: Longest Freefall RC Skydiver

Unread post by rcskydiver »

OH forgot!!

Here is the link to the LOW ALTITUDE DEPLOYMENT jump done by Riaan and myself!! 8)

http://www.youtube.com/watch?v=HUsJFSwfrgU

Enjoy!!
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Re: Longest Freefall RC Skydiver

Unread post by Janna »

=D> =D> =D> =D> =D> =D> =D> =D> ,Yeah Man!!!!!!!!!!!!!
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Re: Longest Freefall RC Skydiver

Unread post by rcskydiver »

OK, Gideon and myself decided to see just how long we could strecth the freefall. Unfortunatly we had to use our single jumper drop planer (Alpha .60 trainer) for the job. On a clear blue sky it gets small quicly, but we mannaged some good jumps considering we had wind drift on 2 different levels!! I used my new diver on 2.4 so no aerial, the freefall was spectacularly stable, was even able to turn it twice in freefall!! The downside is I did not have my alimeter on board so no height stats, next time!!

jump 1 myself: 30,2 seconds
jump 2 Gideon: 37,1 seconds
jump 3 myself: 40,3 seconds

Now if we get a bigger plane......

Blue Skies,
Fanie
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pietermu
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Re: Longest Freefall RC Skydiver

Unread post by pietermu »

=D> 8)

Okay for the purpose of thought the earth's atraction force is 10m/s wich is 36km/h wich of course could be less due to the mere size of the skydiver.
So for a 40.3s freefall you would at least have dropped at 403m AGL and maybe ad another 50m to open and land.

:wink:

But then again maybe the freefall isn't that slow. If say freefalling at 45km/h wich is 12.5m/s then the AGL would have been 503.75m :wink:
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Re: Longest Freefall RC Skydiver

Unread post by gideon.edge540 »

Well Pieter

If we freefalling at 45km/h wich is 12.5m/s then I think we would have done 90 sec. We were much higher than 700m AGL so the maths around that one my friend I'm not so sure about. :?:
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Re: Longest Freefall RC Skydiver

Unread post by pietermu »

There is a "maybe" in the sentence :lol:

Gideon have fun the way you fly it. =D>
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Re: Longest Freefall RC Skydiver

Unread post by In The Haze »

http://www.antonine-education.co.uk/Phy ... _speed.htm

Looks like around 216kmh terminal velocity for a skydiver.??? :?:
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Re: Longest Freefall RC Skydiver

Unread post by sabackflipper »

pietermu wrote:=D> 8)

Okay for the purpose of thought the earth's atraction force is 10m/s wich is 36km/h wich of course could be less due to the mere size of the skydiver.
So for a 40.3s freefall you would at least have dropped at 403m AGL and maybe ad another 50m to open and land.

:wink:

But then again maybe the freefall isn't that slow. If say freefalling at 45km/h wich is 12.5m/s then the AGL would have been 503.75m :wink:
I think the figure of 10m/s represents acceleration due to gravity. So for the first second the skydiver will fall at 36km/h. Second number 2 will see the skydiver reach 72km/h, and this will continue until terminal velocity is reached. Someone please correct me if I'm wrong.

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