rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 515 ONLINE 30 EVENTS SEARCH REGISTER  START HERE
 
2 pages [ <<    <    ( 1 )     2     NEXT    >> ]4313 viewsPOST REPLY
Autography FlightPower . Advantage Hobby . Revolution Models

.
.
Aerobatic 3D Contest > Pirouetting Flip animation
 
 
jeffscholl
Key Veteran
Location: Whitefish, MT

I'm playing around with some new software and I want to make sure I have the basics down before further efforts....

so does this look right for a pirouetting flip?
http://www.gravityshots.com/flash/piriflip.swf

(will need Flash for this..)

cheers...jeff
04-09-2002 Over year old.
HOMEPAGE  
 
 
ed vega
Key Veteran
Location: nyc, queens

pirouette with two flips..
04-09-2002 Over year old.
 
 
beedub
Senior Heliman
Location: Arlington, Tx

Jeff,

I know you said your working on the basics of it. The cyclic controls look correct. Did you stop the piro on purpose?
Other than that looks good!
04-09-2002 Over year old.
 
 
jeffscholl
Key Veteran
Location: Whitefish, MT

beedub...

i put in a 3/4 turn piro..
then for the first axis i added 90 deg left rudder, then 90 deg forward cyclic
next axis 90 deg left rudder followed by 90 deg right cyclic
next axis 90 deg left rudder followed by 90 deg down cyclic
next axis 90 deg left rudder followed by 90 deg left cyclic

then loop the timeline again starting with the 3/4 piro turn...

this does look different though from what I do on G2...

i think i may have to look more at the 45deg transitions to account for procession perhaps...

this all makes the work day go quicker ;-)

cheers...jeff
04-09-2002 Over year old.
HOMEPAGE  
 
 
dwaynet
Senior Heliman
Location: Fairfax, Virginia

Something isn't right, the rotor disk should continue to rotate in the same direction, either rolling or flipping. It looks like you started doing a front flip but what you end up with is a roll out. Try and redo it so the rotor dist continues to move through the flip or roll in the same direction and I thin kyou will have it. Please repost it, I am learning these too and a visual representation slowed down is a big help. Tired of using pens, ciggarette packs, staplers and everything else on my desk. Yours looks much better

Dwayne
04-11-2002 Over year old.
HOMEPAGE  
 
 
Dave_D
Key Veteran
Location: Philippines

Great job.

What I'd like to see is stick movements on the side of the animation and the ability to pause it at key positions.
04-11-2002 Over year old.
 
 
Ted-s
Senior Heliman
Location: upstate SC

Hay you know that is what all of us newbees need that way if you here some one talking about it you can under stand what they said. Keep it up you are doing great. Ted
04-11-2002 Over year old.
 
 
jeffscholl
Key Veteran
Location: Whitefish, MT

round 2:
http://www.gravityshots.com/flash/piriflip3.swf

this resembles more of what happens on G2..
each 90deg of rudder only gets 45 deg of cyclic for this example

gimbals are tomorrows task...
(providing I don't get stuck optimizing/indexing database queries......yuck)

here is a piroutting loop, but no clue on Tx inputs here....
http://www.gravityshots.com/flash/piroloop.swf

cheers...jeff
04-11-2002 Over year old.
HOMEPAGE  
 
 
Blade
Heliman
Location: Tulsa. Oklahoma

Very nice animation

Thanks
04-12-2002 Over year old.
 
 
jeffscholl
Key Veteran
Location: Whitefish, MT

http://www.gravityshots.com/flash/piriflipg.swf

i think i have the gimbals correct..

cheers...jeff
04-12-2002 Over year old.
HOMEPAGE  
 
 
volare
Veteran
Location: Cincinnati Area

Looks really good. I can't do that manuver yet so I don't know if the stcks are right but it looks sweet.
04-14-2002 Over year old.
 
 
dwaynet
Senior Heliman
Location: Fairfax, Virginia

Awesome Jeff,

Great work. The gimbles look right to me. I can only do this on the sim, have yet to work up to doing it for real. This animation helps me answer the question of how many piro's to the flip. Correct answer is 2 piro's to each flip. Thanks,

Dwayne
04-15-2002 Over year old.
HOMEPAGE  
 
 
Ted-s
Senior Heliman
Location: upstate SC

Yes that is some great work. Please post more. Ted
04-15-2002 Over year old.
 
 
Augusto
rrAdvertiser
Location: San Diego, CA

Quote 
Dwayne posted:
This animation helps me answer the question of how many piro's to the flip. Correct answer is 2 piro's to each flip.


Dwayne,

That assumption is incorrect.The number of piros per flip is only dependent on how much deflection you give to the right stick while stirring the stick. As long as you have enough altitude you can do almost an unlimited number of piros per flip if your deflection is very small or almost one flip per piro where the tail sort of "draws" an eight figure which is then called a chaos. For that one the deflection is maximum and your cyclics response should be pretty quick.


Augusto

Avant Aurora Ultimate
04-16-2002 Over year old.
 
 
dwaynet
Senior Heliman
Location: Fairfax, Virginia

ColeopTer,

I was referring to one in particular that I have in a video. When I do 1 piro per flip it doesn't look right. When I do at least 2 piro's per flip it looks much better and is what I was trying to achieve. chaos huh? so that's what a chaos is. cool. Someone should post some kind of a description to some of these tricks.

Dwayne
04-17-2002 Over year old.
HOMEPAGE  
 
 
davehour
Key Veteran
Location: Guayama, Puerto Rico

Can anyone explain how to do a pirouetting loop?

Thanks.
04-25-2002 Over year old.
 
 
Augusto
rrAdvertiser
Location: San Diego, CA

In a pirouetting loop the objective is to

"give the disc up elevator across the complete loop"

What I mean by this is as follows:

When you do a loop you basically have some forward speed, pull up elevator and control the pitch to draw a vertical circle.
During this maneuver the main blades disc slowly flips by the continuous application of up elevator until it completes 360 of rotation at the end of the loop.

From the blades disc point of view a pirouetting loops is basically the same. The disc slowly flips 360 degrees during the maneuver but the only difference is that in this case the tail is pirouetting.

Now the question is how do we apply "up elevator to the disc" while the tail is pirouetting?

The answer is simple if you understand that for the disc to continuously keep on flipping slowly the cyclic needs to keep applying the equivalent to up elevator at the swashplate level.

Let's divide it in four quadrants to make it simple to understand:

Assuming you're pirouetting to the left so you unload the tail.

1) When you start the loop and the piro you need to give simple up elevator (stick down).

2) Once the nose is to the left and the tail to the right of the loop direction your cyclic should be left aileron (stick left). This would still make the disc slowly flip in the direction of the loop.

3) Once the tail points in the direction of the loop in a backwards flight position your cyclic should be down elevator (stick up). Doing this makes the disc continue to slowly flip in the direction of the loop.

4) Once the nose is to the right and the tail to the left your cyclic should be right aileron (stick right). Doing so will make the disc slowly flip towards the direction of the loop.

5) When the heli is back in the forward flight direction your cyclic should again be up elevator (stick down)

This repeats itself as many times as pirouettes you're doing in a loop.

So you start the loop and the stick goes down and then left and then up and then right and then down again.
Instead of going to the four points you actually transition through the stick position in a "stirring" fashion in-sync with the pirouetting motion.

At the same time you need to control the pitch as necessary so that the heli's path describes a nice perfectly round vertical circle.

Hope this helps.

Augusto

Avant Aurora Ultimate
04-25-2002 Over year old.
 
 
davehour
Key Veteran
Location: Guayama, Puerto Rico

Got it!

So, it's basicly the same flippings controls but with forward speed. Same difference between the normal backward flip and inside loop.

Could imagine how sweet a backward piro loop should look like

Thanks.
04-26-2002 Over year old.
 
 
Augusto
rrAdvertiser
Location: San Diego, CA

Yes you're right.

The difficult part is to control the pitch so it looks nicely rounded.

Augusto.

Avant Aurora Ultimate
04-26-2002 Over year old.
 
 
heliraptor
Key Veteran
Location: Colchester, Essex, UK

Think I got it

Hi Coleopter

I'm thinking about moving on to this sort of stuff.

I think I understand this right, from reading you previous post the up elevator during the piro follows the tail around the piro during the manoeuvre, like you say the hard thing is to get the collective timing right.

Guess I'll just have to try them.

Where should I start i.e what manouevre is the easiest to get your head round.

Lee
04-27-2002 Over year old.
HOMEPAGE  
 
 
2 pages [ <<    <    ( 1 )     2     NEXT    >> ]4313 viewsPOST REPLY
CarbonXtreme . Midland Helicopters . HeliProz

.
.
Aerobatic 3D Contest > Pirouetting Flip animation
  UPDATE SCREEN   PRINT TOPIC Advertisers 

Subscribe to This Topic

Saturday, October 11 - 5:25 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie