Of course, if you haven't added weight, the plane's tail is just going to hang down the first time you lift it. You will simply be scoring them. After making the wing, always mark the center and draw a line down it to make it easy to position for mounting. The glide range is the same as weight/altitude potential energy balance extra drag at higher glide speed. 3x12 on Step 5. Now that you know where the horizontal stabilizer is positioned, you can mark the position of the main wing. Using the basic rule to find the dimensions of the main wing as shown in step 1, lets use the example of a main wing with dimensions 6x30. Back of main wing to front of horizontal stabilizer: 4 inches  Ratio used: 2:1 Where can I find (or how can I calculate) the glide ratio for a PA-28-181? 0000004669 00000 n 0000015348 00000 n The angle of dihedral for this plane is 20 degrees. Correct Throwing Technique: 0000035426 00000 n Now, gently bend the wing up, and hold a protractor up to one side of the wing, as shown in photo 3. If the plane does not have dihedral, it will not be stable in flight. How can election winners of states be confirmed, although the remaining uncounted votes are more than the difference in votes? 0000126768 00000 n But, of course, you still have to determine the dimensions of the horizontal stabilizer. Tape it into position from the bottom as shown in photo 9, and add 2 small strings of glue on either side of the vertical stabilizer, as shown in photo 10, for added strength. on Introduction. 0000064826 00000 n So we have a Weight Best Glide or Wbg graph curve too! @Aircraft Lover that is why I love to build and test. So, we have to look back the answer rather than to take the answer in the provided link. The easiest way to do this is by finding all the common factors of the number you end up with, so in this example, 36. Introduction The AERY Glider Design Software package provides an easy to use interface for creating a glider design. Determination of optimal gliding weight range is a useful and practical study for any design. We may check it from force components. 0000004894 00000 n The plane is finished! So that you can not only build but design your own glider according to your needs and preferences. Why is character "£" in a string interpreted strange in the command cut. 0000042537 00000 n 0000041384 00000 n 2x18 Smaller plane: Wingspan: 20 inches (50 centimeters) Even if you properly balanced the plane with the right amount of weight, it will still do a nosedive straight to earth if it doesn't have dihedral. Because I don't know the dimensions you have picked, I can only give you the best ones for explanation of how it would work for a larger plane and smaller plane. They are: 1,2,3,4,6,9,12,18,36 So an 1800 lb Cessna would require 200 lbs of "thrust" to glide 9:1. A kitchen scale (electronic or mechanical) is handy to have here.

Gliding is a descending, opposite of climbing, which is ascending. Mark out a cutout pattern the size of the horizontal stabilizer (chord and width of material), halfway up the height of the fuselage, and cut it out. If you are making your own plane, the size of the other parts, the vertical/horizontal stabilizers and fuselage, are always determined by the ratios that are based upon the size of the chord and area of the main wing. 0000013212 00000 n 2nd distance: But first, cut a slot for the horizontal stabilizer, as show in photos 1 and 2. - knives tend to be sharper than scissors and their thin blades can cut clean edges, are easier to handle than scissors, and are more accurate, which makes all the difference in factors of flight such as drag, wing area, and weight.For the right cutting technique, refer to photo 3. This is where it gets a bit more complicated for you. Using the example of the wing before with dimensions 6x30: The chord is 6 inches. If there is no reinforcement, the rubber band will eventually cut through the cardboard or styrofoam, causing the band to become jammed in the fuselage, making launching with it difficult. To make it easier, first cut a slot in the rear of the fuselage for the horizontal stabilizer. Now to apply it.

This requires the main airplane wing to be rectangular in shape when viewed from above and as pictured below. 0000117678 00000 n Look at photos 3,4, and 5 for reference. Repeat the method with the protractor and glueing on the other wing. How are the glide polar and L/D ratio charts related? �):X���0�IdH[4iwY��l�ΐ_�;6@�O���D�����a/a�s>�O���4��||��v�e�B�0������?t��^&?��/��0�a�Y�-ϗ�=\��c�������?�!�������?K��v:��C�.� Front of fuselage to front of main wing: 3 inches   Ratio used: 1.5:1 but, with the ratios I will give you, you can make whatever size glider you like (within an acceptable hand-throwing range of size).If you have any questions, about the ratios, or the building of the plane featured here, or your own, (or whatever else you can think of, as long as it has to do with hand gliders)  feel free to leave them in the comments and I'll get to them as soon as I can.