Search: Posts Made By: Lnewqban
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Forum: Questions and Answers 06-14-2017, 06:20 PM
Replies: 24
Views: 520
Posted By Lnewqban
Simply enter your numbers for this calculator to...

Simply enter your numbers for this calculator to do the math:

Aircraft Center of Gravity Calculator (http://rcplanes.000webhostapp.com/cg_calc.htm)
Forum: Aerodynamics 06-14-2017, 06:15 PM
Replies: 15
Views: 2,177
Posted By Lnewqban
Could you explain how the plane "lands like crap...

Could you explain how the plane "lands like crap even with flaps"?

Is the CG located as aft as possible?

I concur with BMatthews' post above.
Forum: Tips & Techniques 03-05-2017, 10:01 AM
Replies: 235
Views: 92,460
Posted By Lnewqban
Cool It seems to me that the problem is in the way the...

It seems to me that the problem is in the way the rope is attached to the dowel.
Because it is not symmetrical respect to the center of the rig, a twisting torque (yaw) is applied by the very weight...
Forum: Aerial Photography and Video 11-06-2015, 02:32 PM
Replies: 123
Views: 9,790
Posted By Lnewqban
Thank you, Eric! Beautiful project. :)

Thank you, Eric!

Beautiful project.

:)
Forum: Questions and Answers 10-28-2015, 07:14 PM
Replies: 8
Views: 472
Posted By Lnewqban
Cool Welcome, drew110307! For any choice,...

Welcome, drew110307!

For any choice, consider the tremendous centripetal effect of the high rpm's of the engine combined with the small diameter of pulleys or gears.
Many belts, and even chains,...
Forum: Questions and Answers 03-02-2014, 04:11 PM
Replies: 10
Views: 804
Posted By Lnewqban
You are welcome :) Most pilots don't...

You are welcome :)

Most pilots don't bother fixing an axial unbalance.
Those will correct the tendency with aileron trim, which works at high speeds, but then the wingtip tends to drop during...
Forum: Scratch Building, Aircraft Design, 3D/CAD 03-02-2014, 10:49 AM
Replies: 11
Views: 566
Posted By Lnewqban
Cool Each of the components of your airplane will...

Each of the components of your airplane will become 54 times heavier than it is when moving on a rectilinear trajectory.

During those moments. all those components will hang from the wings, which...
Forum: Questions and Answers 03-01-2014, 09:35 PM
Replies: 10
Views: 804
Posted By Lnewqban
Welcome to RCU !!! :) It needs what it...

Welcome to RCU !!! :)

It needs what it needs; better a little heavier than out of lateral balance.

However, repeat the balance upside down, just to be sure that the CG is lower than the line...
Forum: Aerodynamics 03-01-2014, 09:29 PM
Replies: 29
Views: 2,190
Posted By Lnewqban
The correct answer was in your question. :) ...

The correct answer was in your question. :)

For proper pitch and yaw stability, the aerodynamic center of the airplane must be aft the point in which the weight is concentrated (just like in any...
Forum: Questions and Answers 02-05-2014, 07:02 PM
Replies: 8
Views: 645
Posted By Lnewqban
What about the roll stability for inverted flight?

What about the roll stability for inverted flight?
Forum: Aerodynamics 01-20-2014, 07:26 PM
Replies: 27
Views: 2,865
Posted By Lnewqban
I believe that that is the way in which B-2...

I believe that that is the way in which B-2 bombers control the yaw, with some help of differential thrust.
Forum: Aerodynamics 01-15-2014, 07:34 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
That thing flies in the wind like an angel !!!...

That thing flies in the wind like an angel !!! ........ and also lands well, which is many times more difficult to achieve in heavy cross-wind than flying. :)

Thanks, Bob.

Personally, I love...
Forum: Beginners 01-14-2014, 07:15 PM
Replies: 17
Views: 646
Posted By Lnewqban
Cool What does he like, yolt? Why not simplify...

What does he like, yolt?

Why not simplify things and go for a Gentle Lady glider?; easy for learning and can always be e-powered later on.

IMHO, he is too young for the complication of glow...
Forum: Aerodynamics 01-14-2014, 11:51 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
Personally, I love it. :) It is great rudder...

Personally, I love it. :)
It is great rudder practice!

The extra bonus is that you have the field for yourself, as almost all planes stay grounded.

http://www.youtube.com/watch?v=6S9zXnYqaWI...
Forum: Aerodynamics 01-14-2014, 05:36 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
No fishing for something or second intentions on...

No fishing for something or second intentions on my side, just a way to animate this interesting discussion and to learn how other pilots handle out of power landings, especially those who land using...
Forum: Aerodynamics 01-11-2014, 07:12 PM
Replies: 236
Views: 10,571
Posted By Lnewqban
Cool Can some of the above posters describe how his...

Can some of the above posters describe how his landing technique changes for dead stick situations?

It would be interesting to hear how each manages non-power controlled crashes, and especially...
Forum: Scratch Building, Aircraft Design, 3D/CAD 01-10-2014, 07:45 AM
Replies: 7
Views: 378
Posted By Lnewqban
Thanks !!! AutoCAD was hard for me...

Thanks !!!



AutoCAD was hard for me back when I started; however, the help function can make you roll smoothly on basic staff (90% is basic staff repeated one thousand times) in about one week...
Forum: Aerodynamics 01-10-2014, 07:38 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
Thanks, Ross. What about the elevator input...

Thanks, Ross.

What about the elevator input at that moment?
Forum: Aerodynamics 01-09-2014, 05:20 PM
Replies: 236
Views: 10,571
Posted By Lnewqban
In that case, what is your landing technique to...

In that case, what is your landing technique to avoid all that tail weight from making the plane pitch up and start a porpoise oscillation? :confused:
How good is the shock absorbing (no spring)...
Forum: Scratch Building, Aircraft Design, 3D/CAD 01-09-2014, 11:49 AM
Replies: 7
Views: 378
Posted By Lnewqban
Any link for that?

Any link for that?
Forum: Aerodynamics 01-09-2014, 11:40 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
You are welcome, Bob .............and...

You are welcome, Bob

.............and that is landing left to right: :)
...
Forum: Aerodynamics 01-09-2014, 07:57 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
http://www.youtube.com/watch?v=KpIFhWYVJqE ...

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

http://www.youtube.com/watch?v=hb13Q0ZmSAQ

http://www.youtube.com/watch?v=IGdUA9ZKNZc
Forum: Aerodynamics 01-09-2014, 07:49 AM
Replies: 236
Views: 10,571
Posted By Lnewqban
It is a Pitts S-2S Special: ...

It is a Pitts S-2S Special:

http://en.wikipedia.org/wiki/Sean_D._Tucker#Accidents

http://en.wikipedia.org/wiki/Pitts_Special
...
Forum: Airplanes - Full Scale 01-08-2014, 01:31 PM
Replies: 5
Views: 730
Posted By Lnewqban
Thank you very much, gentlemen !!! :)

Thank you very much, gentlemen !!! :)
Forum: Aerodynamics 01-08-2014, 01:27 PM
Replies: 236
Views: 10,571
Posted By Lnewqban
I fully agree with this post. Talking about...

I fully agree with this post.
Talking about speed of stall is not accurate.
Check this thread out:...
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