Summary of Contents for J&H One Sheet Glider
- Page 1 One Sheet Glider J&H Aerospace www.jhaerospace.com The Budget Beginner’s Free Flight Glider Great for school groups, STEM programs, children, and anyone interested in the fine art of free flight soaring...
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Page 2: Building Instructions
J&H Aerospace Building Instructions Congratulations on your purchase of the One Sheet Glider catapult glider! You are about to build an easy to fly glider capable of long flights in calm air. Please watch the One Sheet Glider build video at https://www.youtube.com/watch?v=msrLJogxusQ... - Page 3 Reduced size 3-view:...
- Page 5 CA accelerator (if using CA glue) will be helpful. It is not necessary to sand the parts of the One Sheet Glider in order to obtain a flyable model airplane, however your model will fly much better if you take the time to properly sand the flying surfaces. Proper sanding results in higher launches and improved glide performance.
- Page 6 Use a razor blade to free the fuselage parts on your parts sheet as shown. Only remove the fuselage sides for the moment. You should be able to just cut the little retaining tabs, however you should check for any areas where the laser may not have fully cut through the wood. Use gentle strokes to cut through the wood rather than forcing the razor through with a single pass.
- Page 7 Coat one side of on of the fuselage parts with glue as shown along its entire length. Now stack the fuselage sides together as shown, making sure they are aligned as exactly as possible. If they are not correctly aligned, the rest of the model will not build correctly and may not fly well.
- Page 8 Weigh the fuselage down with something heavy along its entire length on a clean, flat surface while the glue hardens. This step is important to ensure that the finished fuselage is as straight as possible. Use sandpaper to smooth any rough edges off of your fuselage. Do not round off any of the edges at this time as this well cause problems in mounting the flying surfaces and generally weaken the fuselage.
- Page 9 Cut the wing free from the parts sheet and sand any rough edges off.
- Page 10 For best performance, use a sanding block and/or a razor plane to bevel the wing trailing edge and round the leading edge. You can also taper the wingtips to lighten the model and get a better airfoil.
- Page 11 Flip the wing upside down and lightly score it between the perforations in preparation for breaking the wingtips to set the dihedral. Rest the wing on the edge of a table, aligned with the perforations as shown. If you have airfoiled the wing, the wing must be upside down for this step.
- Page 12 Crack the wing as shown to set the initial dihedral. Locate and remove the triangular piece on the parts sheet as shown. This part will serve as both a dihedral gage and a finger rest for hand launching.
- Page 13 Weigh the wing down with something heavy and slide the dihedral gage in as shown. Make sure it is slid in such that the wingtip has roughly 30 degrees dihedral. If you slide it in sideways, you’ll get about 60 degrees dihedral which is inefficient.
- Page 14 Add glue to the top of the dihedral joint and allow it to harden. Repeat the cracking, dihedral gage, and gluing steps again for the other wingtip as shown. Pay close attention to ensure that the dihedral is in the correct direction.
- Page 15 Once the glue has hardened on the second wingtip, flip the wing over and add glue to the underside of the dihedral breaks and allow it to harden as well. Do not throw the dihedral gage away! You will need it later. Your wing is now finished.
- Page 16 Cut out the horizontal stab. Sand as desired to get tapered edges for best streamlining.
- Page 17 Add glue to the stab slot on the back of the fuselage as shown. This slot is on the bottom of the fuselage, so make sure that if you have sanded the stab to an airfoil that you orient the stab correctly. Failure to do so will result in uncontrollable looping on launch that likely cannot be cured.
- Page 18 Remove the vertical tail from the parts sheet. Sand to a symmetrical cross section. Add glue bottom of the fin on the side shown.
- Page 19 Attach the fin to the side of the fuselage above the horizontal stab as shown.
- Page 20 Locate the wing slot atop the fuselage and run a bead of glue on it as shown. Place the wing atop the fuselage, locking it into the keying slots as shown. You will need to prop of the wing so that it remains level while the glue hardens.
- Page 21 The dihedral gage serves as a finger rest on the trailing edge of the wing. Glue it to the back of the wing against the fuselage on the bottom of the wing as shown. The photos show it being added to the right wing.
- Page 22 Break off some clay from the ballast block supplied. Add some glue to the nose of the airplane as shown.
- Page 23 Press the clay onto the glue and form it around the nose of your glider as shown. Balance the model on your fingertips as shown to locate the center of gravity. There are two laser cut marks on the wing which show the correct center of gravity location...
- Page 24 Add or remove clay in small amounts until the glider balances on your fingertips at the recommended center of gravity location. Locate the rubber strip in your kit that will be used to make a catapult and tie it in a granny knot as shown to make a big loop of rubber.
- Page 27 Trim off the excess rubber with scissors as shown. Fold the rubber in half to double it up. Stick a finger through both loops of rubber that you have formed.
- Page 28 Pull the end of the loops over on itself...
- Page 29 Now grasp this slip knot that you have formed and fold it in half as shown Insert the catapult stick through the doubled up loop.
- Page 30 Tighten the slip knot onto the catapult handle to lock the rubber on.
- Page 31 You can now begin flight trimming your one sheet glider! Do not expect perfect flights from your model at first. All model airplanes require subtle adjustments to get them flying correctly. If your model crashes, never simply try to fly it again without taking time to figure out what made it crash and what can be done to correct it.