In recent years, due to the widespread use of brushless motors and lithium batteries, so performance electric model aircraft has improved by leaps and bounds. Only 380 series electric model aircraft, the thrust to weight ratio increased from about 0.6 to, even 2. This change can only be cautiously original practice flight model with the "fighter" performance, but also makes love enjoy the fun of flying die immediately turning to the faithful like the real electric model aircraft.F7U the early 1950s in the United States Navy aircraft carrier equipped with twin tailless fighter jets. Has a very advanced design concepts, but also has good aerodynamic performance. I like this very much.
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| RC Airplanes |
The basic structure of the model
Foam is really making model airplanes as a good material with easy styling, simple processing, and many other advantages, if the paper reinforcement methods combined, but also greatly shelves structural strength, the effect is very satisfactory. So today introduced the use of foam production model."Machete" no horizontal tail, the structure is relatively simple, the whole frame model is divided into five parts: body (divided into two parts), wings and tail (exactly two), respectively, with foam cutting, grinding production easy processing.
Shorter fuselage, nose and cockpit tucked the front, two jet engines juxtaposed tail. The parts are available directly cut from the foam. Before production, we first processing of raw materials into the size of a more accurate rough. After rough machining, the need to play on the necessary size of its former center, so as to make the production of the body accurate, and looking nice. Taking into account the need to dig out the position of the body placed inside the power systems and electronic devices, and therefore choose to use two foam split ways --- first dig up every piece of foam needed empty spaces, then one further processed synthetic rubber appearance. Thus, the flow line shape of the fuselage can be done quite detailed. When digging in the cabin, you can make use of a small tool - low voltage electric wire cutting done a semi-circular ring, use it to dig foam as easy as cut the apple skin, and more accurate.
The production wing, first with homemade electric style "planer" will cut into thick foam flat plate of 18mm; press the external dimensions cut edges; finally polished with sandpaper to smooth asymmetric double-convex airfoil . When sanding, I use the coarse sandpaper No. 360, No. 600 sandpaper and then finely ground, and finally with water, sand finer polish surface.Because the flight model design faster, so the wing span direction must be strengthened. And my approach is to use a section of about 4mm in diameter carbon fiber fishing rod mounted on the lateral surface of the wing (not fishing rod protruding wing surface, otherwise it will affect the smooth surface): On the surface of the wing and cut a carbon nanotube to adapt notch; carbon tube pressed into the slot; then a small amount of glue filled.
Ailerons and wing body polished on both sides together and then cut down in order to maintain consistency with the upper and lower surfaces of the wing. Ailerons can cut paper or polyester tape hinge connecting the wing (the need to ensure flexible activities). Both ailerons whole machine is only moving part is the control center of various flight conditions, as long as their activities properly, accurate, would generally be a good flight performance.Two relatively large vertical tail shape is consistent with no moving parts. Need to dig beneath the tail of a mule, to insert it into the back of the wing and the wing upper and lower surfaces with adhesive. Because the model is not set landing gear, the thickness is relatively large, so the special will be made ??thicker lower part of the tail, not only increases as the real model aircraft during landing is not easily damaged.
I made this aircraft model uses aileron and elevator mixing ways: left and right wing of the tube with a steering, remote control of the mixing function to set the aileron and elevator linkage, ie, with aileron channel directional control, lift channel level control. This model can not be done in addition to the class action side fly, but you can do a lot of stunts.
To be continued...
Foam is really making model airplanes as a good material with easy styling, simple processing, and many other advantages, if the paper reinforcement methods combined, but also greatly shelves structural strength, the effect is very satisfactory. So today introduced the use of foam production model."Machete" no horizontal tail, the structure is relatively simple, the whole frame model is divided into five parts: body (divided into two parts), wings and tail (exactly two), respectively, with foam cutting, grinding production easy processing.
Shorter fuselage, nose and cockpit tucked the front, two jet engines juxtaposed tail. The parts are available directly cut from the foam. Before production, we first processing of raw materials into the size of a more accurate rough. After rough machining, the need to play on the necessary size of its former center, so as to make the production of the body accurate, and looking nice. Taking into account the need to dig out the position of the body placed inside the power systems and electronic devices, and therefore choose to use two foam split ways --- first dig up every piece of foam needed empty spaces, then one further processed synthetic rubber appearance. Thus, the flow line shape of the fuselage can be done quite detailed. When digging in the cabin, you can make use of a small tool - low voltage electric wire cutting done a semi-circular ring, use it to dig foam as easy as cut the apple skin, and more accurate.
The production wing, first with homemade electric style "planer" will cut into thick foam flat plate of 18mm; press the external dimensions cut edges; finally polished with sandpaper to smooth asymmetric double-convex airfoil . When sanding, I use the coarse sandpaper No. 360, No. 600 sandpaper and then finely ground, and finally with water, sand finer polish surface.Because the flight model design faster, so the wing span direction must be strengthened. And my approach is to use a section of about 4mm in diameter carbon fiber fishing rod mounted on the lateral surface of the wing (not fishing rod protruding wing surface, otherwise it will affect the smooth surface): On the surface of the wing and cut a carbon nanotube to adapt notch; carbon tube pressed into the slot; then a small amount of glue filled.
 |
| RC Planes |
I made this aircraft model uses aileron and elevator mixing ways: left and right wing of the tube with a steering, remote control of the mixing function to set the aileron and elevator linkage, ie, with aileron channel directional control, lift channel level control. This model can not be done in addition to the class action side fly, but you can do a lot of stunts.
To be continued...
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