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Search: Posts Made By: Leon
Showing results 1 to 25 of 120
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Forum: Aerodynamics
08-31-2005, 11:38 AM
Replies: 27
Views: 6,179
Posted By Leon

RE: Symmetric airfoil

Doesnt matter, if it where possible to install some AoA sensors on your model I guarantee that they will say it has some AoA even when it looks like its not got any, it doesnt take much at all to...
Forum: Aerodynamics
08-23-2005, 05:56 AM
Replies: 27
Views: 6,179
Posted By Leon

RE: Symmetric airfoil

Actually the problem isnt as bad, sure you lose lift, BUT you lose it on both sides of the rotor, so that means the heli will not try to roll like a single main rotor would.
Forum: Aerodynamics
08-22-2005, 04:22 PM
Replies: 28
Views: 4,361
Posted By Leon

RE: Winglets

I havnt got any pics, but I could do a rough sketch.

http://www.geocities.com/apache_64_d/Winglet.JPG

From the frontal view you can see the blending into the wing, and from the side view...
Forum: Aerodynamics
08-22-2005, 06:12 AM
Replies: 27
Views: 6,179
Posted By Leon

RE: Symmetric airfoil

The guys at the club are fixed wingers first, helis second, so I would try to talk about things that are related more to planes, but in R/C modelling this only really crops up in blade tips, or high...
Forum: Aerodynamics
08-21-2005, 12:05 PM
Replies: 28
Views: 4,361
Posted By Leon

RE: Winglets

My final year project was about this subject, and I used a wing that was approxmatly the scale of an R/C model wing, I managed to design a winglet that decreased drag by approximatly 8% at positive...
Forum: Aerodynamics
08-20-2005, 03:09 PM
Replies: 27
Views: 6,179
Posted By Leon

RE: Symmetric airfoil

I was thinking about mentioning things like compressability (for heli rotor blade tips) the reynolds number, the drag polar, that should make their heads spin:D
Forum: Aerodynamics
08-20-2005, 02:52 PM
Replies: 29
Views: 11,644
Posted By Leon

RE: CG vs Airfoil

Yes, but I was trying to not cloud things either, the two are related, one changes and the other changes, CP moves - moments change due to bigger/shorter dimensions from the CP.
Forum: Aerodynamics
08-20-2005, 01:19 PM
Replies: 29
Views: 11,644
Posted By Leon

RE: CG vs Airfoil

CG placement, you should also consider how far the CP is going to move forwards when the AoA is at its greatest, it could move so far forwards that it moves infront of the CG, so during straight and...
Forum: Aerodynamics
08-20-2005, 11:08 AM
Replies: 27
Views: 6,179
Posted By Leon

RE: Symmetric airfoil

This is so funny, just last week I was attempting to explain this subject to some people I fly with, I said to them that if you have a completely flat wing or a symetrical wing and that if its at...
Forum: RC Submarines
09-19-2004, 08:46 PM
Replies: 7
Views: 1,833
Posted By Leon

RE: are there any 1/200 or 1/144 scale 688i models out there

cheers, I have had a look and did a search for other models by trumpeter, but no western subs

Im not sure how big a 1:350 LA class would be, but i dont think it would be big enough for R/C
Forum: RC Helicopter General Discussions
09-18-2004, 08:31 PM
Replies: 3
Views: 978
Posted By Leon

RE: who owns this

you lucky git

Urrm, yeah, that was meant for me, I will PM you my address:D
Forum: RC Submarines
09-18-2004, 03:27 PM
Replies: 7
Views: 1,833
Posted By Leon

are there any 1/200 or 1/144 scale 688i models out there

if there is where can i get one?
Forum: RC Submarines
09-15-2004, 06:40 AM
Replies: 24
Views: 3,103
Posted By Leon

RE: Revell

wait a minute, are you saying the servos and motor are not isolated from the water, now I know at low voltage electronics can work in water, but are you sure this isnt going to damage those...
Forum: RC Submarines
09-12-2004, 04:13 PM
Replies: 3
Views: 940
Posted By Leon

RE: I want to get into this

cheers,

in the kit what do you usually get, do you get the pressure hull, ballast tanks and pumps.
Forum: RC Helicopter General Discussions
09-12-2004, 10:27 AM
Replies: 5
Views: 601
Posted By Leon

RE: Fuel overburn

I had problems like this, but for some reason after running in, I have to run it a 3/4 of a turn!!!! to get any appreciable power out of it and there is still pleanty smoke, so its not over heating,...
Forum: RC Helicopter Beginners Forum
09-11-2004, 06:50 PM
Replies: 8
Views: 621
Posted By Leon

RE: PLease read, i need some help!

really you should learn on a 30 size, they may be more expensive, BUT they are far more easier to learn on, they are more stable, and more robust, it really makes me wonder why ppl are starting to...
Forum: RC Submarines
09-11-2004, 12:28 PM
Replies: 9
Views: 3,977
Posted By Leon

RE: torpedos

you know I may have a solution for this problem,

I fly R/C model helicopters, and one that I recently bought is a micro helicopter called the zoom400, it has a micro gyro, now two of these could...
Forum: RC Submarines
09-11-2004, 12:13 PM
Replies: 3
Views: 940
Posted By Leon

I want to get into this

I want to make either a scale 688I, seawolf or trafalgar class, roughly 3-5ft long, now I know sheerline model submarines make a kit, but what else do I need to get hold of

I fly R/C...
Forum: RC Submarines
09-11-2004, 12:05 PM
Replies: 24
Views: 3,103
Posted By Leon

RE: Revell

i want to get into R/C subs, and I dont see why not, but i wouldnt bother putting all the tiny little bits on, the force of the water on those little bits will break them off
Forum: RC Helicopter General Discussions
09-10-2004, 11:48 AM
Replies: 46
Views: 3,437
Posted By Leon

RE: Helis & rockets

nope, it works just fine:D
Forum: RC Helicopter General Discussions
09-09-2004, 02:50 PM
Replies: 7
Views: 684
Posted By Leon

RE: Hot S9254

are you by any chance running it on a 6.0v battery, if you are thats probably the reason, it specifically says on the back of the box 4.8v only
Forum: RC Helicopter General Discussions
09-08-2004, 08:30 PM
Replies: 15
Views: 883
Posted By Leon

RE: RCU can we have a Hirobo forum please

cheers, hmmmm, i cant see it, is it a subforum (if its running yet)
Forum: RC Helicopter General Discussions
09-07-2004, 02:37 PM
Replies: 15
Views: 883
Posted By Leon

RCU can we have a Hirobo forum please

show your support here please:D
Forum: RC Helicopter Beginners Forum
09-07-2004, 02:35 PM
Replies: 8
Views: 1,303
Posted By Leon

RE: Mode1 to Mode2

what TX is it, do you know its name, that would help
Forum: RC Helicopter Beginners Forum
09-07-2004, 02:33 PM
Replies: 5
Views: 911
Posted By Leon

RE: MDS 32 engine

you do know what MDS stands for dont you, Motor Doesn't Start
Showing results 1 to 25 of 120
 
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