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whatmovesyou
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This is my second flight of the twin prop around 2:50 you see a moment of hover with no wind.

I haven't tried to hover yet, but I'll break it out to practice. Note zero zip, nada wing rock to be found- anywhere! That's why I don't know why everyone keeps talking about it. Jay, Ian causton and his friend along with the Ampang fliers all fly high alpha with no wing rock. I think if you see movement in the wing it's either torque roll or side wind.
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http://www.youtube.com/gstrysky
http://www.frcfoamies.com


Just got back. You stated above "no wing rock", you need to review at 3:31, its, rocking, beside if different having 2 motors. When you push it past the point when there is no rudder control, then you rock. It is only when you have all 3, can you go into hover. I am going to do more testing with different mods to see if it gets better or worse. My video had both still(no winds) as well as variable winds, yet it still goes into hover and is blown away. Let me finish and then I will list what mods I did as well as present hovering in still air.

Also, working on pimping the jet with a 64 EDF that will(hopefully) do high alpha into a hover. Same design, so why don't you try?
I like to design and fly unique planes.
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F1wanabe
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Just got back. You stated above "no wing rock", you need to review at 3:31, its, rocking, beside if different having 2 motors. When you push it past the point when there is no rudder control, then you rock. It is only when you have all 3, can you go into hover. I am going to do more testing with different mods to see if it gets better or worse. My video had both still(no winds) as well as variable winds, yet it still goes into hover and is blown away. Let me finish and then I will list what mods I did as well as present hovering in still air.

Also, working on pimping the jet with a 64 EDF that will(hopefully) do high alpha into a hover. Same design, so why don't you try?

With the twin props, once the battery dips then you start having irregularities in the thrust from each motor. That is what caused the wing rock at 3:31. I reviewed your video and at each of the "HOVER POINTS" you can hear the wind buffeting your microphone. The reason this is not hover is because you can use the wind to brace the plane against- The third point you talk about. I'm not taking anything away at all from your flying, which is excellent. And its great that you have taken an interest in the alpha jet because I believe it is the best parkjet at high alpha. And, if you did find a breakthrough with it, I would be very happy to see it. But as of yet, you have not shown us anything that Jay's stock alpha jet can't do. These are the points you attempted hover and these times are approximate:
1:10- wind buffeting
1:35- Wind buffeting
1:43- Not controlled- it torque rolled.
1:59- Not controlled-Tipped backwards
2:35- Wind
2:57- Torque roll
3:56- Wind
I gave away my standard alpha jet and will be building another to join you in your hover testing. I have to this date not tried hover, only extreme angles of high alpha. And by the way, is that a flight stabilizer I see on the bottom of the plane?
I've never tried one on the alpha jet yet. Maybe I will do that since I've got one.
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whatmovesyou
First thing I have got to ask is what is a flight stabilizer?(on the bottom of the plane.) I have told you that I took the model and changed 3 things with Alpha jet. I am old school and would never use a gyro.

The first thing I did was add more overhang on the upper surface(extended it forward) for higher alpha. Secondly, I change the prop to a 7 inch and it is also is a wide prop.(See my opinions I voiced on forum dealing with picking a prop). The third is that I redesigned the rudder which is way different then yours. It is just like Jamie changing the transport to fit his needs.

In order to do high alpha and hovering, you must have full control of all 3 functions. When you loose rudder, wing wobble occurs. I just found a way to by-pass the loss of rudder and I am now able to go into hovering(this plane is very difficult in vertical for it doesn't take much to loose it's balance).

The first video shows I can hold still, rotate CW-CCW to counteract torque produced by the prop using the rudder. For the nay sayers, I even showed the nose and my hand being flat. The second video shows that from a high alpha it goes into hovering with no wing movement. This was done early morning with no wind. The key is "as you change rpms, you need to adjust rudder which is very sensitive." Since there is no camera man, I make do.

In fact, I am modifying the Alpha system to take a 64 EDF with new features. This is my preview before I attempt "VTOL". Try to see if it is going to work.


I like to design and fly unique planes.
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whatmovesyou
Doing the last day of exploring CG, I found that it windsurfs beautiful, acts like a glider(great L/d) with engine off and even lands with engine off, does high alpha and hovers, and if controlled properly, it will do even do a knife-edge. That was a great design Jamie. Now on to other projects.
I like to design and fly unique planes.
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