mincyclicele: The minimum of the cyclic incidence in degree for the elevator like function.maxcyclicele: The maximum of the cyclic incidence in degree for the elevator like function.mincollective: The minimum of the collective incidence in degree.maxcollective: The maximum of the collective incidence in degree."true" and "false" are not any longer supported to increase my lifespan. -) ccw: determines if the rotor rotates clockwise (="0") or counterclockwise (="1"), (if you look on the top of the normal, so the bo105 has counterclockwise rotor).rel-len-blade-start: Typically the blade is not mounted in the center of the rotor.Typically it should be something near 0.7 Zero means at the base, 1 means at the tip. rel-len-where-incidence-is-measured: If the blade is twisted, you need a point where to measure the incidence angle.A taper of one is a bar blade, and zero would be a blade ending at a point. taper: The taper fraction, expressed as the tip chord divided by the root chord.Typically, this is a negative number so that the rotor tips have a lower angle of attack. twist: The difference between the incidence angle at the blade root and the incidence angle at the wing tip.chord: The chord of the blade its base, along the X axis (not normal to the leading edge, as it is sometimes defined).Maybe not 100% correct interpreted use 0.5 for the start and change in small steps relbladecenter: The relative center of gravity of the blade.weightperblade: The weight per blade in pounds.fx,fy,fz: A Vector pointing forward, if not perpendicular to the normal it will be corrected by the computer. nx,ny,nz: The normal of the rotor (pointing upwards, will be normalized by the computer).x,y,z: The position of the rotor center.This is not completely tested, but seem to work at least for rotors rotating counterclockwise.Ī value stall gives the fraction of the rotor in stall (weighted by the fraction the have on lift and drag without stall). All angles are in degree, positive values always mean "up". For every blade the position angle, the flap angle and the incidence angle are stored. The rpm, cone angle, yaw angle and roll angle are stored for the complete rotor. For all fuselages in the rotor downwash you should specify idrag="0" to get realistic results. The rotor generates downwash acting on all stabs, surfaces and fuselages. You have to specify the solver results manually. If you specify a rotor, you do not need to specify a wing or hstab, the settings for approach and cruise will be ignored then. There is a drawing of a rotor in the Doc-directory () (Hint: See the image on the right.) Please find the measures from this drawing for several parameters in square brackets. (Below element descriptions are from README.yasim, edited formatting, added image, image hint and references.)Ī rotor. In addition to the general XML elements, described on the YASim wiki, the following elements are used to specify the helicopter rotors/engine. ac and texture files in FlightGear/data/aircraft/your_heli/Models/. See Modeling - SketchUp for a tutorial about that. If you are using the free version of SkecthUp you need Blender to convert the. If a face is placed with purple side outside reverse it with Right Mouseclick > Reverse faces. You could check this by going into View > Face style > Monochrome in Sketchup. Keep checking if the faces are aligned with the white face outside and purple inside (or that face will not be shown in flightgear). Use all the different face views in SketchUp, such as wireframe and X-ray so you can see everything you are doing. There is no hard and fast rule, no easy way around and no substitute for hours. Then, as you get some semblance of order, you can start pasting in place and it starts to look something. The rotors in a separate file, cockpit etc. Group the fuselage together and create a separate file for each part. So you need to choose between extreme quality or a small file, or pick something between that. Keep in mind that your model will get heavier the more lines it has. Then it is a case of fine tuning it over a period of days/weeks/months. Now we import a top plan of the helicopter into SkecthUp as an image and drawing over the top to create the tough shape of the body.
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