Augusto
rrAdvertiser
Location: San Diego, CA
| What I mean is not a forum to just list and describe what a maneuver looks like. What I mean is one to discuss the tricks to get them right.
Look at this post from RCOnline. In it there were several posts as to how each one was able to achieve a tornado or funnel:
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YSRRider
HOW TO DO A TORNADO????????? Posted 12-18-2001 03:36
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whats the secret to this maneuver??? i have tried to pull it off on RF but it doesnt look to good! usually ends up in a crash! im thinking this needs to be done under negative pitch?
misskimo
hi Posted 12-18-2001 09:14
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yes , - pitch is right , and Im thinking you have to say on that tail too , and you control the up and down with the collective, so upside down in a hover , tilt the nose up at about 65 degrees and kinda going side ways to help the transsion , and jump on the tail alittle when you throw in right ail or left , which ever you are comfortable with and let her rip . sounds easy huh? but I never tried it before , just on the sim. Tony
raptor30
How to do a tornado??? Posted 12-18-2001 16:03
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The way i start a tornado/funnel is:
From forwardflight,pull up like entering a stall turn,but when the heli stops,give full negative and full right(or left)aileron.
Watch the tail and if you wanna climb you have to give backwards cyclic!
On the sim i can do it for as long as i want but in real i cant hold it long because the lack of power :-(
Max
Countach
Tornados Posted 12-18-2001 23:19
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If you enter a funnel from backwards flight you will not load the engine as much and will be much easier to control.
DrScoles
funnel Posted 12-19-2001 00:14
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I think its good to master backwards inverted first. This enables you to enter and exit the maneuver in a very controlled manner. To start, you can be flying backwards inverted and just start making a tighter and tighter circle. A lot of times when you're learning how to do this, you end up with a big circle with the tail pointed down and teh skids facing in.
Someone else above mentioned having the power to do the trick. You can do a flatter or more open funnel with average power, however, to do an almost vertical funnel, it really takes a lot of juice. This is the only trick that kind of slows down my OS91. When I get it almost straight up and start to climb, the motor is really working hard.
I'm working on popping a balloon on the ground with either a pin on the end of the tailfin, or the tail blades themselves... and while night flying, you could put the cyalume stuff in the balloon before you blow it up.
Wind is another challenge with this trick. On a calm day, its a piece of cake to keep it right in front of you, but when its windy, you have to time the collective with the wind and that is a few too many things for my brain to handle all at once.
I just wish it would stop raining!!!!! Coming from San Diego to 9 months of rain is killing me!
Mike
ColeopTer
The trick Posted 12-19-2001 03:50
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Even if you're not that proficient on inverted tail first flight there is an easy trick to do a tornado and you can try it in your sim to see how easy it is.
1) From a fast forward flight pull up on the elevator and let the helicopter go straight up until it loses almost all forward speed.
2) Give full left aileron so the helicopter is rolling with the rolling axis aligned vertically.
3) At this point slowly add a LITTLE BIT of left rudder and I really mean SLOWLY. The helicopter will be doing sort of a funnel but the rotation center will be the middle of the helicopter. By now the helicopter should be starting to fall.
4) At this point start giving it negative pitch until you stop the helicopter from falling.
There are basically two things that modify the shape of the tornado.
For smaller diameter tornados:
Increasing the left rudder makes it more flat and therefore you need to lower the negative pitch to compensate and prevent it from climbing. It also makes the diameter of the tornado smaller. You can take it up to the point where the rotation center is the tail and it looks like the tail is stationary.
Bigger Tornados:
If you increase the negative pitch then you need to ease up on the rudder otherwise it will climb. At the same time the size of the torado is bigger. This is where even a 91 starts to feel forced.
The smaller one is easier on the engine.
There's also a trick I use to compensate for wind and also to correct for the funnel to be perfectly vertical.
When you see the tornado tilting to a certain side you will notice that one side of the tornado becomes more "vertical" while the opossite side becomes more tilted down. The trick is to wait until it's in the "vertical" position and give it a little momentary up elevator. You can repeat over and over for anytime the helicopter passes by the "vertical" side of the tornado. Doing this will keep the tornado pretty much perfectly aligned.
Hope this helps and let me know if it worked for you.
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I know I have a gazillion things to ask about how to achieve this or that maneuver or compensate for this or that. That's the kind of stuff I'm referring to not just a description of what it should look like.
Avant Aurora Ultimate |
