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HomeAircraftHelicopterHelicopter Main Discussion › Inverted auto help.
09-03-2013 12:40 AM  5 years agoPost 1
altima1779

rrKey Veteran

Toledo, oh u.s

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I used to do autos all the time but quite for a few years.

I started doing them again and have good results in normal autos, my problem is when doing inverted autos.

I have been doing them with a fairly quick and steady nose in inverted dissent and then flip forward.

The first day I did 4 and they were all pretty good, this weekend I did about 10 inverted and most of them ended with a good hard drop at the end.

I am using an Evo 50 FBL as it is a good inexpensive platform to practice with.

My question is how to approach the flip with out killing the headspeed? When upright I flare at the end which builds headspeed and then I add collective to set it down nice and soft.

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09-03-2013 12:55 AM  5 years agoPost 2
Funky Trex

rrElite Veteran

Westerville, OH - USA

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Are you flipping or rolling out of the inverted auto? I lose more headspeed flipping upright than I do rolling the heli upright in an auto. With good collective management, both can be done quite well, but rolling the heli seems more forgiving.

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09-03-2013 01:00 AM  5 years agoPost 3
altima1779

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Toledo, oh u.s

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I see the same results as you, rolling is easier.

I am having problems when flipping forward, maybe I am just giving too much negative as I flip.

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09-03-2013 01:08 AM  5 years agoPost 4
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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You expend less energy rolling the heli vs. flipping it. When you flip, you have move that big heavy tailboom around. Rolling keeps the tailboom in the same position basically.

Verba volant, scripta manet

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09-03-2013 02:43 AM  5 years agoPost 5
jschenck

rrProfessor

La Vista, NE.

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I think the real issue with flipping out is the collective. You have to really carefully walk through the collective as you flip it, concentrating on keeping the blades at a slight negative on the side that is being pushed through the air, neutral when the rotors are directly into the incoming air. No matter what you'll likely loose headspeed so just leave some room to drop the nose and flair a bit to pick the headspeed back up.

really makes you appreciate those that do tumbling auto's but even when I watch really good pilots do tumbling auto's they pause for a moment as they get to the horizontal attitude to regain headspeed.

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09-03-2013 03:54 AM  5 years agoPost 6
RyanW

rrKey Veteran

Edmond, Oklahoma

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jschenck is correct. You can really spin up the blades when you push over if you keep some positive pitch in the blades as you begin the push over. Zero out as you climb and add negative as you decend to horizontal and lift the tail. You will hear the blades spin up before you start to flare.

What I see people have trouble with mostly is trying to do a quick flip. Anything quick at the end of an auto is going to take all headspeed away. You don't need to come in a Mach 2.5.

Keep in mind if you spool up the head when you push over by keeping some positive pitch in the blades, it will continue to move toward you a little. If you want it to rocket up vertically, then zero out the pitch earlier or if you are really brave you can add some negative, which will shoot you vertical earlier, but really bleed off headspeed.

Just remember this above all things- upright or inverted- when you raise the disk and add a little pitch opposite to direction of disk (if inverted, you have pos pitch), the blades will always spin up very fast. You have to manage this, because it won't last forever. A guy at the local field couldn't believe adding negative pitch at the end of a conventional auto would increase the headspeed without slamming it into the ground. If done correctly you actually stop forward momentum by raising the disk and adding neg pitch. You then flatten the disk and transition through zero pitch and begin your flare at the right time with an abundance of headspeed. This is what I try to do with inverted push over autos as well.

Sorry for the long reply, I just had a triple shot espresso

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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09-03-2013 08:54 AM  5 years agoPost 7
Volcano

rrApprentice

chicago

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Just dont flip out in the wrong direction, I did that last year and havent tried one since.

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