Probably some heat resistant item. I am not sure how much firewall a ultralight needs. Some designs have the engine nearly sitting between your legs. If the engine catches fire, you may forget a next generation.May i ask what you understand under ceramic insulation?
Sure but not everyone has access to one. A couple dozen 90 and 45 degree cuts is easy for anyone. Build a little jig and you're done in half an hour. I'd probably use square tubing too, just to make it easier.The remark about trying to keep all tubes similar. Yes, but ... hey ... we live in the modern world. Let all the tubes be cut by waterjet-cutter. Using hunderd different tubes is no longer a trouble. Just get them labelled.
Yes it's a steep curve, it's not just you!
My word of advise: do not draw. Build mock-up and test yourself before drawing. I did a few tests in the past and i was surprised that some things i thought to be good were in fact very very bad.
It solved the thickness problem, the points are still unconverged but the thickness and max thickness position values are now correctly displayed. Thank you.Yes it's a steep curve, it's not just you!
You are on the right track, though. Coordinates need to be like:
Thank you but I don't understand, usually there's a X coordinatate and a Y coordinate, here you start with X1;Y0 followed by X0.9+ is + supposed to be the Y value or do we have to put a + sign before positive values?Name of airfoil [only 1 line above the coordinates]
1 0_______________[start with 1 0]
0.9 +_____________[then describe the top surface]
0 0_______________[one zero at the leading edge]
0.1 -_____________[then describe the lower surface]
1 0______________[end at the trailing edge]
Separate the coordinates with a space, not a tab or some other invisible character. No blank lines (returns). If there is a blank line that is interpreted as the end of the file.
Thank you but I don't understand, usually there's a X coordinatate and a Y coordinate, here you start with X1;Y0 followed by X0.9+ is + supposed to be the Y value or do we have to put a + sign before positive values?
See if you can get geometrical information about objects. There may be a command like <info> on the tools menu. Copy the spline info and paste it into a text editor. Then use search and replace to remove everything except the the cooridinates.Any way to import 2D curves from a CAD program instead of typing?
The FMX4 managed around 1.0
From the PAV report (comparing the proposed Facetmobile follow-on to conventional aircraft) :Now I am confused. I thought one of the appeals of LAR was high lift at high AOA due to vortex effects. A CL of 1.0 is not terribly impressive.
Maybe the plane has a higher Clmax (Clmax max?) when it is in vortex lift at an exceedingly high AoA, but the drag at this AoA is so high that it could/would never be used for takeoff.The conventional airplanes take off with the flaps retracted or at very small deflections, so their maximum lift coefficient is relatively low (about 1.35). Although the low aspect ratio airplane has a lower maximum lift coefficient (about 1.0) than either of the conventional airplanes, it is not enough lower to offset the effect of the low wing loading