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« on: December 11, 2013, 03:23:52 PM »
docnayeem
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This is my first self designed electric glider ....
Specs :
Fuselage length 22 in
Wing span 38 in
Cord 5.5 in
H. Stab 10*6
V. Stab 8*6
Electric setup : Motor 2623 3000 kV
ESC 25 amp
Battery 2 cell 1800 mAm
Total weight : 460 GMs
Material used : All coro

All the dimensions are taken with standard proportions.

* I think I have messed up with wing loading ....

ALL EXPERTS OUT THERE EVERY WORD OF YOUR ... COUNTS .... NEED SUGGESTIONS BEFORE THE MAIDENhttp://img.tapatalk.com/d/13/12/11/ysydyqet.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
http://img.tapatalk.com/d/13/12/11/ymunyny9.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
http://img.tapatalk.com/d/13/12/11/7epu7y6y.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
http://img.tapatalk.com/d/13/12/11/edavesa6.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
http://img.tapatalk.com/d/13/12/11/hapyzy9u.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
http://img.tapatalk.com/d/13/12/11/zu5ape5a.jpg
1st self designed electric glider ..... Need expert Suggestions before maiden
   

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« Reply #1 on: December 11, 2013, 03:26:15 PM »
Aeroempire
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Great plane 👍👍👍.
Post flying video soon Smiley
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« Reply #2 on: December 11, 2013, 03:41:32 PM »
FlyingBrick
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Nice build. Smiley
How did you re-inforce the T joint on the V stab, how steady is it?
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To think too long about doing a thing often becomes its undoing
 

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« Reply #3 on: December 11, 2013, 04:10:45 PM »
docnayeem
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Re:
Its stuck with 2 coro  pieces and cyno and is quite sturdy

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« Reply #4 on: December 11, 2013, 04:48:07 PM »
vishalrao
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Your wing doesn't have a dihedral and it doesn't have ailerons too. Pretty sure you will have a tough time controlling it.
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« Reply #5 on: December 11, 2013, 05:10:09 PM »
docnayeem
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Re:
@vishalrao ... As it is I have messed up with the wing loading ... So planning a poly dihedral of 6 to 8 in on both edges of the wings ..  What do you think ? ... Thanks for the input

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« Reply #6 on: December 11, 2013, 05:38:16 PM »
manojswizera
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You can just cut out the Ailerons now also. Wink
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« Reply #7 on: December 11, 2013, 06:13:49 PM »
docnayeem
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Re:
That's a good option .... It won't take care of the excess wing loading though ....

 

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« Reply #8 on: December 11, 2013, 07:39:56 PM »
docnayeem
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Re:
Hey ... Any one on the wing loading maths ...
 That's been pricking me .... The value turns out to be 9.9 cube wing loading. And ideal glider wing loafing figure is under 5 .... Mine is almost double .... This is the maths part .... But experts on board .... Please ...advise

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« Reply #9 on: December 11, 2013, 09:25:33 PM »
EricOliver
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First of all ..well done gr8 plane Smiley...your wingspan is 9.26 oz/cu.ft to be exact ( according to online calculator) usually beginners are advised to choose cubic loading no greater than 8 but since its close enough no worries.....as suggested by one of the members above do cut an aileron...as you are a beginner you should practice with ailerons first...if you have an extra servo just cut the ailerons out...if you dont hav an extra servo you can swap the rudder servo as you dont need rudder right now....as i too dont use rudder im also on a learning stage for planes...you can see my first plane here http://www.rcindia.org/electric-planes/my-new-spad-hell-on-stick-(-no-rails)-))))/

Plus you can refer to this page for calculations an design help....

http://adamone.rchomepage.com/design.htm
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« Reply #10 on: December 11, 2013, 09:30:19 PM »
Aeroempire
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U can also go for web0calc, great online calculator for planes
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« Reply #11 on: December 11, 2013, 09:32:49 PM »
EricOliver
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Ive never tried webocalc....ive tried ecalc...does webocalc have data abt turnigy motors...??...ecalc has but not all ..
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« Reply #12 on: December 11, 2013, 09:35:20 PM »
docnayeem
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Re:
@EricOliver thanks for your suggestions ...
 Will do the aileron part but am thinking to do it after a test flight as I want to confirm I don't need more wing area ... What do u say ?

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« Reply #13 on: December 11, 2013, 10:37:03 PM »
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No you are fine with 9.26 loading ...no worries go for maiden Smiley
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« Reply #14 on: December 11, 2013, 10:46:41 PM »
docnayeem
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Re:
@EricOliver That boosts my confidence... Thanks will keep posted ....

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« Reply #15 on: December 11, 2013, 10:57:45 PM »
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Just go for maiden....and post videos so if anything goes wrong we can identify.... Thumbs Up Thumbs Up
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« Reply #16 on: December 11, 2013, 11:19:21 PM »
wingman4ever
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hii please before take off do the glide rest first by hand usually i do the that before takeoff..incase any load shifting...please do i tby chuking with full force and ensure weather it gets stall or dive ...if you aware about the glide test...all the best....
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« Reply #17 on: December 11, 2013, 11:20:29 PM »
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Yea n one more thing have you balanced and checked the cg..?
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« Reply #18 on: December 11, 2013, 11:22:23 PM »
wingman4ever
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please try the the extra tip in dihidral angle by adding extra coro of same shape at both the wings end... will help at the time flying...and prevent from wing drop at turns.....
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« Reply #19 on: December 12, 2013, 09:35:49 AM »
docnayeem
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Re:
@wingman4ever...
 Thanks for the input... Had given a glider trial with out the load ( battery ESC Rx and motor ) had glided well and about tip dihedral was thinking in same Lines will do that ..
 Thanks again

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« Reply #20 on: December 12, 2013, 09:37:20 AM »
docnayeem
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Re:
@EricOliver .... The CG is a bit (1in ) behind where it should be ... So adding a bit of weight on the nose ( nut ) ..
 

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« Reply #21 on: December 12, 2013, 10:01:44 AM »
manojswizera
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Instead of adding dead weight, move the battery to get correct CG.
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« Reply #22 on: December 12, 2013, 10:12:13 AM »
docnayeem
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Re:
@swizera ... Actually there is no scope for any forward battery movement ... That's y I had to resort to dead weight

 

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« Reply #23 on: December 12, 2013, 11:17:54 AM »
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While adjusting cg always try to remove weight adding more wt will worsen the cg...and will have hard time balancing....
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« Reply #24 on: December 12, 2013, 11:25:02 AM »
docnayeem
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Re:
@EricOliver...then
 I have to reduce the tail ..
 V stab and H stab ... But that will mess up with my proportions ... Should I ?

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