Hey guys I just finished building my Carf Rookie 2 with 26 pound P120 got some great flghts in today.

It was funny as my look out partner used to have one but said he was to old to fly it the way it should be flown.

So I tried pulling tight on the elevators with full thrust vector and it flipped tight and held flat and level it was sweet

But it got me thinking. What are some jet 3d maneuver and what is the best way to enter into them

Every one wanted me to try to hover but I was not sure how to enter a hover

Thanks for any pointers

Mike

I always found that inverted entries always seemed to work best for the crazy stuff with the Rookie II. The hover isn't really a hover but more of an inverted slowly descending harrier.

Lot of ways to enter it but I liked an inverted push up to near vertical, or a hard climb rolling to inverted, and as the airplane appears to be about to stall or run out of speed, hold full down elevator & full power and the airplane will usually end up hanging there at about 80-85 degrees nose up, inverted. Thrust vector needs to be on. As it slowly descends, you can use the rudders to steer it around. Recovery is a sharp pull on the stick to full down and you're out of it, nose straight down and needing a 100 feet or so to get to level.

You'll have to try it and find the right technique for your airplane & engine. It will flip out of it if you don't hit it at the right speed or right attitude.

Never found a way to hold it in while upright. If you are able to get it into the "hover" without thrust vectoring, you may not be able to get out without turning it on.

You can fly it around flat, upright or inverted while slow and do some interesting things using the rudders at low speed. The airplane spins nicely upright and inverted (cross controlled). You can accelerate the spins by easing the elevator off the stop towards neutral. Don't be afraid to try anything at low to moderate speeds, just have enough altitude to recover.

If you also have yaw vectoring, you can get it to do flat pinwheels at incredible rotation rates.

Thanks that is some great information there.

Yes 4 axis thrust vector. How do yo recover from flat spin?

I found that Inverted flat spins will recover spontaneously. I.e., just let go of the sticks and airplane will spontaneously recover.

Upright flat spins can be disastrous and may be impossible to pull out of. I've been able to pull out of Upright flat spins with opposite ailerons. It was kinda scary.

I've never had thrust vectoring, but I would assume that would make it much easier. When you are Upright, you don't have your rudder in the wind to stop the flatspin.

If you give opposite aileron and opposite vectoring with increasing throttle would probably pull you right out of an upright flat spin.

Here's a pic of some Upright flat spins that puckered me right up.



Try them up high and see how it goes.

My first tip is to not try anything that others want you to try..

The Rookie needs more than a 26 pounds P120 to hover safely... is ok for flipping and flopping around and flat spins. You can enhance your 3D using reverse exponential in the thrust vectoring servos.

Thanks for the info. I think I read somewhere that I can send in my older p120 and have it upgrade to a p120se. It already has kero start and I think I read this will put the 120 closer to 30 pounds would that be enough to hover?

certainly it would help...maybe you can also help on the weight of the airplane itself, using lipos and trying the hover at the end of the flight, when the plane has burnt most of the fuel.

Had seen the J-10 from Carf, wich hovers pretty well.. the plane is very light, and the landing gear legs are made of CF, maybe you can do something like this too. It also used at first 5 gyros (!) but now is using just one I-gyro unit wich is better and also lighter too.

Not the same plane, but this is a video of a J-10 using gyros for hovering somewhere in Asia..

http://www.youtube.com/watch?v=U62TqtaRicg

Your P120 has to be s/n 1996 or higher to be able to get it upgraded to the SE version.

I'd suggest spending some time trying things with the airplane before spending money for a couple pounds of thrust (at best) and the gyros.

Mike...


Since you have a rookie now.... you going to sell your Euro? (pm me)