RC India
Welcome Guest, please login or register.
 
Pages: 1 ... 12 13 [14]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« Reply #325 on: October 07, 2015, 11:16:28 PM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



Good Conventional attempt

Size of the vortex is pressure differential=Lift=weight (In level Flight)

In level flight it is only weight dependent, High speed low CL but Higher Speed=Same pressure differential, therefore the size of the vortex will remain same irrespective of the speed


Thumbs Up great attempt
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he canít get it wrong.
 

Read
« Reply #326 on: October 08, 2015, 10:39:37 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 52 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4406
Join Date: Jan, 2012



@rcpilotacro,
Thanks for the kind words, even though i skipped my first answer (which was correct) in favour of my second answer (incorrect).
No one else has responded, except for rastsaurabh, whose criptic one word post 'read', was presumably for me, as it couldn't have been for you!
Hence query to saurabh,

@rastsaurabh,
Please recommend reading list...
Regards.
Logged
 

Read
« Reply #327 on: October 09, 2015, 12:44:36 AM »
rastsaurabh
Plane Lover
Forum Hero

*****

Reputation Power: 19 
rastsaurabh has no influence.
Offline Offline

City: Noida
State: Haryana
RC Skills: Intermediate
Posts: 1556
Join Date: Mar, 2012



Iyer sir ....
Gusty is the best to suggest any reading.
If i could suggest any reading or knowledge it would be Mobile technology.
Just neglect my post. Btw it was meant that your post was seen before you could correct.
Logged
 

Read
« Reply #328 on: December 13, 2015, 11:00:00 PM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



interesting discussion on funjet ultra roll charecteristics

http://www.rcindia.org/electric-planes/funjet-ultra-6s-300kmph-build-and-maiden-flight/msg244169/#msg244169
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he canít get it wrong.
 

Read
« Reply #329 on: May 25, 2020, 03:20:26 PM »
Pundinas
Plane Lover
Active Member
**

Reputation Power: 1 
Pundinas has no influence.
Offline Offline

City: Chennai
State: Andaman and Nicobar
RC Skills: Beginner
Posts: 21
Join Date: May, 2020



pulled out from my other post. Pruned it a little. To make understanding of RC flying clear.

firstly in level flight weight= lift =CL Ĺ σ V≤ S. CL is coefficient of lift, which depends on your wing angle of attack (position of the nose in level flight) shape, camber etc, Ĺ σ V≤ is called the dynamic pressure, simply put, number of air molecules for a given time, ALSO CALLED THE INDICATED AIRSPEED, 'S' is your wing area.

Now, aeroplane has lift and weight acting as one couple (noseup or down will in RC language, will depend on the cg, because weight acts along it, and position of wings because centre of pressure through which the lift acts).

It also has thrust and drag couple acting on it. nose up or down will depend on position of your engine and wings, which if you are not designing, is pretty much taken care of,

Couple of Forces. For aeroplane to fly in level unaccelerated flight all these couple have to balance so that the residual is zero. If the aeroplane is say designed to get airborne at 30 kmph, it will get airborne at 30 kmph, if the wind that is blowing is 30 kmph, the ground speed at which will get airborne will be zero. But remember the thrust drag couple will have to be zero, which means, you have to open power normally as you do in nil wind condition. If the winds are 40 kmph the aeroplane after getting airborne into wind will travel rearward at 10 kmph. With respect to ground, however with respect to air it is still travelling at 30 kmph. Bottom line CL and S being same it is the Ĺ σ V≤ (the number of air molecules for a given time above and below the wings) which matter.

Much Appreciated
Logged
 

Pages: 1 ... 12 13 [14]   Go Up
Jump to: