Reply I highly recommend using a motor calculator to find the performance of the motor prior to buying it. That is enough about how the gear works lets get to how to build them. The wing must be designed to be able to support the weight of the airplane plus the additional forces caused by maneuvering. The locations of the windows for example will affect the locations of the transverse frames through the fuselage. Continue dry fitting until the edge of the new sheet comes to end of the scarf joint on the sheet on the other wing. This is because wood glue is a water based adhesive and would not be able to penetrate the resin to form a secure mechanical bond. The hinge is a rounded control surface with the pivot point in the center point of the circular leading edge to minimize the hinge gap and to have smooth edges. The sub leading edge is 1/4" thick over sided balsa strip that can be glue on to the ribs with thick CA. Use double sided tape to stick a long straight edge to the wax paper. I have used the Clark Y on all my RC aircraft design plans. Line up two of the strips and the cut the angle the desired angle. Once the elevation of the rib is set insure that it is square with the surface of the table, and that it is mounted in line with the ribs on the wing plan. Cruciform tail- Raises the tail partially above the base of the vertical stabilizer for many of the benefits of the T-tail but with reduced structural loads. Cut the canopy to the desired shape and then rough out the part of the canopy that will be glued. Then sand the balsa until the pocket fits perfectly in the aileron, but also importantly the pocket must align with the hinge line in the center of the control surface. I began the layup by wetting the empennage and then glassed the upper tail cone on both sides. Cut off of the trailing edges off of the ribs that will not be part of the ailerons or the root section. Once the spar is properly dry fitted mix 5 min epoxy to use on the reinforced ribs and apply wood glue to any non reinforced ribs to secure the central drag spar. Note that you will need a different drawing for each side since they are mirror and not a copy of each other. Helpful. Install the hinges and the inner gear door. These are then stacked at end of a pile of airfoil blanks and bolted together the whole stack is then sanded. Therefore creative means had to be found to hold it in place as the glue set. Be patient and be gentle with the covering at this stage it is very easy to crack it. Once the angle is correct use thick CA to glue the wedge in place. RC AIRCRAFT DESIGNING, BUILDING, & FLYING Experiences In Designing & Flying RC Aircraft At Higher Altitudes In Colorado HI! The original Spitfire had a semi-monocoque construction, ie. A well designed fuselage will be optimized for payload, weight, aerodynamic drag and the ability to stretch or shrink in length to accommodate new variations or configurations of the aircraft during its life. The hinge that I used has the control horn build into it, the advantage being that it had a very small footprint, however it does require more torque than it really should to open and close the doors. The pockets need to be large enough to allow the drive shaft to rotated freely within therefore I made mine 2.5" long. Glue a 1/16" thick basswood backer to the back of the fiber glass liners. Then a 1/4x1" basswood bar was epoxied to the reinforced formed and to the truss work. Glue a spacer after the fin, then glue on the next fin. I recommend making a spread sheet to aid in this step since it will allow the design to be iterated quickly(My spreadsheet can be found on the my design process step). The aerodynamic center must be found for both the wing and tail surfaces. Attached is a and excel spreadsheet with the specific components, quantities, prices, and location where they were purchased from. Therefore for most aircraft it ranges between 5 and 15 percent. Fuselage, central portion of the body of an airplane, designed to accommodate the crew, passengers, and cargo. Mark where the elevator will begin on the ribs and then cut off the excess rib material with a razor saw. These joints are called scarf joints. Epoxy the servo onto the self. To do this I printed out the side view from CAD and then taped it onto a sheet of foam core. Be sure to run any of the wires out of the wing. I also knew that I wanted to make it fully sheeted with balsa and fiberglass, because I love the look of wood. Once the desired fit is achieved glue the top piece of fiberglass onto the lower assembly to make the pocket. Once the bottom is finished, flip the part over and do the horizontal members. Sand the leading edge with a straight edge to properly angle the ribs for the installation of the sub leading edge. Now pick up the rib and place it fiberglass down on the waxed surface. I. The remainder of the structural ribs can be done at this point with the exception of the landing gear ribs. The neutral point of the aircraft must be found next. Now that the ribs is in position move to the end of the wing and look down the wing in such a was that the trailing edge of the wing tip is aligned withe the trailing edge of the root rib. Then cut along the line with a razor saw. BJ Craft airplanes offer the RC flyer some of the most innovative features found in any competition F3A pattern plane. Spray the cowl with primer, be careful to keep the can far away from the piece because the propellant will eat the foam. Repeat steps 5-11 to the other side of the rib and to all remaining ribs. To have a successful airplane it is paramount to calculate a few stability terms to ensure that the airplane will be stable and thus flyable. Apply a piece of duct tape along the ribs that it will be sanded in front of. From here there are general guidelines for how many watts of power per pound are required. Building the structure of the fuselage as a truss proved to be a rather fast and easy process, that produced a light yet very strong framework. Inertial loads created by point masses connected to the fuselage (engines attached to fuselage by a pylon is an example). The spar is the critical load path for the airplane, all loads generated from the fuselage are transmitted through it. In this fuselage configuration the force members of the truss provide the structural stiffness, and the aerodynamic covering provides the shape, but does not add much to the overall stiffness of the structure. Place back into the airplane and then drill through the truss to make holes to install blind nuts in the airplane. Use the fuselage as a guide to sand the formers to shape. These are by no means the only ways to do it, and the various spar designs and hinge types can all be exchanged to create the desired wing. One popular aircraft designed with a space frame fuselage is the iconic PA-18 Piper Super Cub which is pictured below. The fuselage (/ ˈ f juː z əl ɑː ʒ /; from the French fuselé "spindle-shaped") is an aircraft's main body section. This is generally accomplished through the use of a central spar which is made up of spar caps, that are the upper and lower flanges on the beam, and the shear web, the thin sheeting that connects the spar caps. Additionally it contains an air scoop to cool the motor. 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