Showing posts with label glider. Show all posts
Showing posts with label glider. Show all posts

Friday, 15 July 2011

Awesome MOD for Walk Along Glider

This topic is related to an Earlier post " How to make a Walkalong Glider ".

Hi guys i think u have seen my earlier post " How to make a Walkalong Glider ", today iam presenting you with an awesome mod to power ur glider

you need a extra of the following things (  It is Not tough if you can find these things) :

 

1. Old picooz rc helicopter's broken tail part 
                          or
     A small Pager motor or vibrator which u may  get for free of cost  in some    
     mobile repair shops

2. 3volts lithium "button battery''

3. Small propeller

                         or
     just follow this  "   http://www.instructables.com/id/mini-airplane/  "
     to make a cheap best propeller from old can



STEP 1:
 Just draw a red line on the glider as shown in the figure (just click on the image to zoom)

STEP 2:
Now make the power booster to the glider by connecting the battery, motor and propellor as shown in the figure , you can also modify little by adding a switch
STEP 3:
Now  just simply attach the power booster to the glider along the red line depending upon the balance point or CG(centre of gravity) of the glider after several test trials as shown in the figure

 Now just rock  the glider with ultimate fun but be careful  the glider may go far away from u leaving fun.

Saturday, 2 July 2011

How to make a Walkalong Glider


How  would it be if a flying object comes along your walk, so lets try to make a colourful human powered glider by this simple steps

 Step1: Print the below plan on large paper and cut out the Pattern Outline of the Wings


First print out the half wing outline twice and cut each form. Turn one of the outlines upside down and tape the two pieces of paper together at the wing root. The resulting outline should have a wingspan of about 28cm (14 inches):


Step 2Cut out Piece of Foam-Mate Material

print out the half wing outline twice on a foam sheet and cut each of them


Step 3Draw Lines for Elevon and Airfoil Bends on Top and Bottom of Wing 


In this step the lines creating the elevons are drawn on the top of the wing cutout and lines creating the airfoil are drawn on the bottom of the wing:

   

Step 4Thermoform Dihedral and Washout Angle


Step 4 involves thermoforming a twist and upward bend  to each wing. The wing root will have a higher angle of attack than the with tip which prevents tip stalls when applying control inputs about the  roll axis (also called the  wing washout angle). The dihedral in an 
airframe design makes the aircraft more stable in the roll axis.



It is important to do this step before bending the airfoil.
 

Step 5Thermoform Airfoil shape to Wing



In step 5, an airfoil shape is thermoformed in the wing. Here's a video of making the first bend along the line closest to the leading edge of the wing:




Do the same for the remaining two lines:


 

Step 6Thermoforming Elevons



Thermoform the elevon surfaces to the trailing edge of the wing:




 

Step 7Fabricate a Nose Boom Ballast


A paper clip is straightened out to make a forward ballast to be attached to the nose. This weight will allow adjustment of the weight and balance 

Step 8Test Flights
The following step involves elevon and ballast adjustments to get the glider flying slowly, smoothly and in a straight line. Initially, the ballast should be as forward as possible.

Test fly the glider, launching it with a slight nose down attitude and at approximately walking speed:




adjust the elevons to get the glider flying straight. In the last video, the glider flies too much to the right, so the left elevon needs to be flattened:




The turning tendency has been corrected. Here is the second test flight:




In the last video, the elevons are trim too nose up and need to both be flattened:




How does it fly now? Let's see:




After more elevon trimming, the glider flies like this:


  



Step 9Flying Lessons 




                                 


















                                                                  ***Enjoy***