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« on: September 27, 2018, 04:55:57 AM »
aaindthu
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I designed and finished building a Hand Launch Glider.  Here are the pics.

I am going to test it out on Saturday.  Wish me luck, I guess I will need a lot.  Undecided

001.jpg
Homemade, self-designed HLG Glider
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« Reply #1 on: September 27, 2018, 05:08:25 AM »
sanjayrai55
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Looks good  Clap

All the best for the maiden  Thumbs Up
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« Reply #2 on: September 27, 2018, 09:01:11 AM »
aaindthu
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Looks good  Clap

All the best for the maiden  Thumbs Up

Thank you Smiley
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« Reply #3 on: September 27, 2018, 09:32:12 PM »
Prakhar Verma
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Did you use balsa to make it
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« Reply #4 on: September 28, 2018, 11:17:02 AM »
aaindthu
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Did you use balsa to make it

that's just high density foam. 
I will upload the build video if the glider is successful
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« Reply #5 on: September 28, 2018, 12:39:39 PM »
Ajay Sarwan
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Hi. Where did you buy HD foam and how much was it?
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« Reply #6 on: September 28, 2018, 07:18:20 PM »
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Keep calm and fly safe.



u can get better results is u use styrofoam... stiffness weight ratio is excellent
i dont make airplanes anymore but the last time i used blue styrofoam i smiled a lot.
got it form a shop in bangalore near townhall. cant recall its name tho.
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« Reply #7 on: September 29, 2018, 08:17:29 PM »
aaindthu
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Today I learnt myself One big lesson

It is a BAD idea to put symmetric airfoil in a glider especially

when there is no slope for soaring..

My glider was working fine, it turned left, right, pitching up and down but..
it never climbed.

I think it was because of the symmetrical airfoil that i used or it could also be because there was no significant slope from where I tried.

But I am going to try again with a camber airfoil next week with the same fuselage.

So, the bottom line is that my glider design is a flop.  But I will try again.
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« Reply #8 on: September 29, 2018, 09:50:49 PM »
K K Iyer
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How did you launch?
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« Reply #9 on: September 30, 2018, 03:36:40 AM »
aaindthu
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How did you launch?

nothing fancy.  Simply hand launched it against the wind.  I am going to try again with


A cambered  airfoil next week. That should work.
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« Reply #10 on: September 30, 2018, 08:21:19 AM »
shobhit17
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Well friend...... if the glider flew straight and level with a simple hand launch.... IT DID FLY WELL..... DO not be dissapointed.... a glider does not climb till it is taken higher by a thermal or it is launched by an external device like a Tow line or another aircraft / model.

if the glider is fine try doing another hand launch straight and level to the ground and show he video...

Yes a symmetrical airfoil is not good for a glider.  But it does not mean that with a cambers aerofoil it will climb......
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Well I been into aeromodelling since I was in School....  and then been in the air for over 30 years.  Now looking to be back into aeromodelling full time...
 

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« Reply #11 on: September 30, 2018, 10:51:45 AM »
aaindthu
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Well friend...... if the glider flew straight and level with a simple hand launch.... IT DID FLY WELL..... DO not be dissapointed.... a glider does not climb till it is taken higher by a thermal or it is launched by an external device like a Tow line or another aircraft / model.

if the glider is fine try doing another hand launch straight and level to the ground and show he video...

Yes a symmetrical airfoil is not good for a glider.  But it does not mean that with a cambers aerofoil it will climb......

I know aircraft cannot climb without thrust.  I meant that with a camber airfoil, the glider may stay airborne for longer duration.  I know it cannot climb..  Thank you for your kind words.  They are encouraging.
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« Reply #12 on: October 02, 2018, 06:12:26 PM »
aaindthu
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Due to lack of any significant slope in my location, my glider could not fly well.

Therefore, I am quitting to build slope soarer or gliders - for now.

I will return with some other project soon Wink

thank you all.
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« Reply #13 on: October 02, 2018, 06:19:37 PM »
Ajay Sarwan
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All the best.
Where did you buy HD foam and how much did it cost? also what is the density of your HD foam?
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« Reply #14 on: October 02, 2018, 06:42:26 PM »
Kratky8
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Very neat! Where did you try out the glider? If you have a friend in tall apartment buildings at ecr you can maybe try the hand launch from there  Wink

Good luck with your next build!
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« Reply #15 on: October 03, 2018, 05:25:03 PM »
aaindthu
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All the best.
Where did you buy HD foam and how much did it cost? also what is the density of your HD foam?
@Ajay Sarwan - I bought the hd foam in sheet form in nearby fancy store in avadi, chennai.  they call it "hi-tech" thermocoal.  it costs Rs 45/- per sheet (1mX.5mx2cm)
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