Search: Posts Made By: Lnewqban
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Forum: Aerodynamics
03-21-2019, 12:40 PM
Replies: 4
Views: 538
Posted By Lnewqban

Cool Welcome to RCU, Sifez! It is hard commenting on...

Welcome to RCU, Sifez!
It is hard commenting on the design only from the data.
03-07-2019, 06:42 PM
Replies: 4
Views: 247
Posted By Lnewqban

Cool Copied from Old School Model Aviation...

Copied from
Old School Model Aviation (http://modelaviation.com/old-school)

"The dihedral angle is set by propping up each panel 1-1/4 inches at the tip, holding a sanding block vertical to the...
01-20-2019, 03:40 AM
Replies: 10
Views: 339
Posted By Lnewqban

Cool Thank you very much for your kind and detailed...

Thank you very much for your kind and detailed response, tedsander. :cool:
01-19-2019, 06:41 AM
Replies: 10
Views: 339
Posted By Lnewqban

Then, this applies to any recreational RC pilot...

Then, this applies to any recreational RC pilot flying regular 5-pound glow engine radio control airplane?
The link does not take me to the actual registration process; am I missing something?
01-12-2019, 02:13 PM
Replies: 16
Views: 520
Posted By Lnewqban

Cool I believe the problem is in those curved sleeves...

I believe the problem is in those curved sleeves (plastic tubes) having too much freedom to move and bend at the midways.
If the tension of the wire while acting over the elevator to deflect it...
Forum: Aerodynamics
01-01-2019, 09:40 AM
Replies: 12
Views: 747
Posted By Lnewqban

Cool The small fonts are non-legible. Could you add...

The small fonts are non-legible.
Could you add some context?
Why several schematics showing different force distributions?
Forum: Aerodynamics
12-30-2018, 08:20 PM
Replies: 12
Views: 747
Posted By Lnewqban

Cool Inertia is not a force. There are only forces...

Inertia is not a force.
There are only forces that are related to the natural inertia of a solid body or fluid.

Copied from
https://en.wikipedia.org/wiki/Inertia

"In common usage, the term...
Forum: Aerodynamics
12-24-2018, 09:14 AM
Replies: 9
Views: 993
Posted By Lnewqban

Cool Thank you! Many more happy flights. I am...

Thank you!
Many more happy flights.
I am posting the link to the video for you:...
Forum: Aerodynamics
12-22-2018, 10:59 AM
Replies: 6
Views: 337
Posted By Lnewqban

Cool I believe that the calculations on the link you...

I believe that the calculations on the link you have posted are not correct.
I would use the on-line calculators shown in the stcky thread by the top of this forum.
Additional ones:...
Forum: Aerodynamics
12-22-2018, 10:31 AM
Replies: 9
Views: 993
Posted By Lnewqban

Cool Congratulations on making it fly successfully! ...

Congratulations on making it fly successfully!
on what direction was the CG off?
Your link to the video is not working for me for some reason.
12-22-2018, 10:00 AM
Replies: 0
Views: 206
Posted By Lnewqban

Cool Disruption of civil flights caused by drones

Gatwick airport: How can a drone cause so much chaos? - BBC News

https://www.bbc.com/news/uk-england-46658868

https://www.bbc.com/news/technology-46632892

Reading this news, I wonder how...
Forum: Aerodynamics
11-08-2018, 07:02 PM
Replies: 31
Views: 991
Posted By Lnewqban

How does wind affect the glider? More mass or...

How does wind affect the glider?
More mass or weight increases the inertia of the plane, which means the sane force of wind induces a smaller acceleration or chage of speed (side-side and up-down)....
Forum: Aerodynamics
10-06-2018, 11:06 AM
Replies: 24
Views: 798
Posted By Lnewqban

Cool I would recommend you borrowing or buying a copy...

I would recommend you borrowing or buying a copy of the following book: "RC model aircraft design" by Andy Lennon.
According to chapter 5 of that book, for the rectangular wings of the Lazy Ace, the...
Forum: Aerodynamics
10-05-2018, 09:33 PM
Replies: 24
Views: 798
Posted By Lnewqban

Cool For pronounced positive stagger (upper wing...

For pronounced positive stagger (upper wing positioned well forward of the lower wing), losing a big portion of the lift provided by the bottom wing may introduce a tail-heavy problem.
The location...
Forum: Aerodynamics
09-15-2018, 11:18 AM
Replies: 9
Views: 429
Posted By Lnewqban

The shorter wing makes the plane slightly...

The shorter wing makes the plane slightly statically lighter aft the CG, perhaps too little to notice.
The wing has less lift capability now, which has to be compensated with faster flight.
Total...
Forum: Aerodynamics
04-14-2018, 10:47 AM
Replies: 11
Views: 1,028
Posted By Lnewqban

Cool The original idea in the design of full scale...

The original idea in the design of full scale traditional airplanes is to keep the horizontal tail surfaces as far from the turbulence of the main wing as possible (not a problem for canard types),...
Forum: Aerodynamics
04-14-2018, 10:38 AM
Replies: 9
Views: 993
Posted By Lnewqban

Cool Welcome, Penthane! I suggest using the same...

Welcome, Penthane!

I suggest using the same method than for finding the CG of tandem wings or even biplanes.
Please, take a look at this:...
06-14-2017, 06:20 PM
Replies: 24
Views: 1,224
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: 2,447
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.
03-05-2017, 10:01 AM
Replies: 235
Views: 108,732
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...
11-06-2015, 02:32 PM
Replies: 201
Views: 15,780
Posted By Lnewqban

Thank you, Eric! Beautiful project. :)

Thank you, Eric!

Beautiful project.

:)
10-28-2015, 07:14 PM
Replies: 8
Views: 522
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,...
03-02-2014, 04:11 PM
Replies: 10
Views: 921
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...
03-02-2014, 10:49 AM
Replies: 11
Views: 633
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...
03-01-2014, 09:35 PM
Replies: 10
Views: 921
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...
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