Longest Freefall RC Skydiver

Our fun RC record attempts.

Moderator: Moderators

User avatar
pietermu
Heli Pilot agrees to buy Super.
Posts: 571
Joined: Mon Sep 14, 2009 8:08 am
Closest Airfield: www.prf.co.za
Location: Gauteng, Pretoria
Has liked: 0
Been liked: 0

Longest Freefall RC Skydiver

Unread post by pietermu » Thu Aug 05, 2010 7:27 am

Previous attempt 9 seconds @ Potgietersrus. Bushveld Flyin 2010.
Attempt so far 15 seconds @ Barnstormers.
info@rcskydive.com - Easyup R/C Skydiving
User avatar
TZN
Lining Up
Posts: 112
Joined: Fri Jun 19, 2009 12:14 pm
Location: Tzaneen/Limpopo
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by TZN » Thu Aug 05, 2010 11:51 am

Ja,Ja,wil ook graag maar het nie n Hettie nie........ :lol:
User avatar
pietermu
Heli Pilot agrees to buy Super.
Posts: 571
Joined: Mon Sep 14, 2009 8:08 am
Closest Airfield: www.prf.co.za
Location: Gauteng, Pretoria
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by pietermu » Fri Aug 06, 2010 7:37 am

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.
info@rcskydive.com - Easyup R/C Skydiving
User avatar
RiaanLR
Engine Cranking
Posts: 44
Joined: Sun Jul 25, 2010 6:32 pm
Location: Worcester
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by RiaanLR » Mon Sep 27, 2010 10:59 pm

Fanie and myself made a free fall of 23 seconds on Sunday at Oudshoorn.
User avatar
rcskydiver
Engine Still Cranking
Posts: 48
Joined: Tue Jul 27, 2010 11:11 am
Closest Airfield: FAOH and CFC Model field
Location: Oudthoorn, Western Cape
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by rcskydiver » Tue Sep 28, 2010 1:38 pm

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:
Real Skydivers know why the birds sing!!
User avatar
pietermu
Heli Pilot agrees to buy Super.
Posts: 571
Joined: Mon Sep 14, 2009 8:08 am
Closest Airfield: www.prf.co.za
Location: Gauteng, Pretoria
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by pietermu » Sun Oct 03, 2010 2:16 pm

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<
info@rcskydive.com - Easyup R/C Skydiving
User avatar
rcskydiver
Engine Still Cranking
Posts: 48
Joined: Tue Jul 27, 2010 11:11 am
Closest Airfield: FAOH and CFC Model field
Location: Oudthoorn, Western Cape
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by rcskydiver » Wed Oct 06, 2010 1:12 pm

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:
Real Skydivers know why the birds sing!!
User avatar
rcskydiver
Engine Still Cranking
Posts: 48
Joined: Tue Jul 27, 2010 11:11 am
Closest Airfield: FAOH and CFC Model field
Location: Oudthoorn, Western Cape
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by rcskydiver » Wed Oct 06, 2010 1:14 pm

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!!
Real Skydivers know why the birds sing!!
Janna
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by Janna » Mon Oct 11, 2010 9:17 am

=D> =D> =D> =D> =D> =D> =D> =D> ,Yeah Man!!!!!!!!!!!!!
User avatar
rcskydiver
Engine Still Cranking
Posts: 48
Joined: Tue Jul 27, 2010 11:11 am
Closest Airfield: FAOH and CFC Model field
Location: Oudthoorn, Western Cape
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by rcskydiver » Mon Oct 11, 2010 10:48 am

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
Real Skydivers know why the birds sing!!
User avatar
pietermu
Heli Pilot agrees to buy Super.
Posts: 571
Joined: Mon Sep 14, 2009 8:08 am
Closest Airfield: www.prf.co.za
Location: Gauteng, Pretoria
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by pietermu » Mon Oct 11, 2010 1:26 pm

=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:
info@rcskydive.com - Easyup R/C Skydiving
User avatar
gideon.edge540
Finals (unmanned)
Posts: 405
Joined: Sun Apr 19, 2009 12:13 pm
Closest Airfield: CFC
Location: FAOH - Oudtshoorn
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by gideon.edge540 » Sun Oct 24, 2010 1:06 pm

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. :?:
User avatar
pietermu
Heli Pilot agrees to buy Super.
Posts: 571
Joined: Mon Sep 14, 2009 8:08 am
Closest Airfield: www.prf.co.za
Location: Gauteng, Pretoria
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by pietermu » Mon Oct 25, 2010 7:40 am

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

Gideon have fun the way you fly it. =D>
info@rcskydive.com - Easyup R/C Skydiving
User avatar
In The Haze
1k poster
1k poster
Posts: 1667
Joined: Fri Sep 16, 2005 10:04 am
Closest Airfield: Brakkies
Location: East Rand
Has liked: 2 times
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by In The Haze » Wed Oct 27, 2010 4:18 pm

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

Looks like around 216kmh terminal velocity for a skydiver.??? :?:
ITH
------------------------------
I guess that flirting with death sometimes leads to a date - ITH
......never send to know for whom the bell tolls; it tolls for thee. – John Donne
Experience is the name everyone gives to their mistakes. - Oscar Wilde
User avatar
sabackflipper
Airspeed active
Posts: 192
Joined: Wed Feb 17, 2010 9:20 am
Closest Airfield: Eagle Creek
Location: Lonehill, Gauteng
Has liked: 0
Been liked: 0

Re: Longest Freefall RC Skydiver

Unread post by sabackflipper » Fri Jan 07, 2011 8:00 am

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.

Return to “Our Record Attempts”