BHawthorne

You don't. There are fiberglass interior dones for construction, but that gets crazy expensive. Instead I suggest you cover a geodesic dome interior with Tendo projection fabric or sew together an inflatable dome out of Ripstop.

If you're going to do dome it needs to be done right. That means a 15 or 20 foot diameter geodesic dome. This is something on my project to-do list. Problem is, I only know of x-plane that can do dome camera mode. The DCS engine needs an unwrapped 360 degree fisheye rendering mode so those with NTHUSIM or Sol7 and EyeFinity 6 cards can make a dome setup for DCS based sims. If ED would add in the camera mode, I'd guarantee NTHUSIM and Sol7 compatibility for dome builds. I have all the hardware and software required to do a dome like that, the sim needs to support it in order for it to work though. If a camera mode could output something formatted simular to this perspective NTHUSIM or Sol7 can calibrate it to 3, 4 or 5 projector dome projection.

Um wow, nice layout on the CAD model. Will this be something you'll sell the plans for eventually? If so, I might buy a copy from you. I was planning on doing a kit design myself on the A-10 but after seeing this, you're pretty much already there. :)

NTHUSIM Plus is capable of advanced keystoning to correct not just the edge geometry, but every part of the projection on both projectors, so that'll not be an issue. There might be some focus area issues where some parts of the projection are softer than others. With short throw projectors though (0.5-0.6:1 lens throw) they don't really have that extreme of a mounting angle. The projectors will be for the most part point ahead toward the screen and are mounted about a foot above the top of the screen edge. The short throw lens design is desinged to throw down at short distances at a simular kind of location -- just not so extreme a downward angle. The mathematics of all of that can be worked out by using Projector Calculator Pro at Projector Central's website. I use the current NTHUSIM Plus build with DCS: Black Shark and DCS: LOMAC 2.0 and am a forum moderator over at the NTHUSIM site, so feel free to ask me anything and I'll do my best to help out. I even have a YouTube video of the DCS engine working on my YouTube channel (BHawthorne72). My suggestion would be to only buy one of the dishes and make a fiberglass reverse mold of the original part. Take that and layup the entire screen curve in segments but it can still be a continuous fiberglass part -- it'll just take laying up an area, then popping it off the waxed mold surface and continuing with the layup after about 12 hours of cure time per area. Theoretically you could do a full 360 degree layup off that single dish if you did it in enough layup times. Fiberglass composites layup is not hard at all. You just need some wax for release on the mold, enough room temperature cure resin and fiberglass cloth to achieve the layup. I also recommend a $100 vacuum pump with hoses and a port with bagging material, so the resin flow through the material is consistant. But with it being a reverse mold -- you can do without the vacuum pump if you really want to cut budget, but you have to be more mindfull of air pockets in the layup. That might be more sanding and bondo repair to the final part, but either way you could do it a lot cheaper and more consistant than segmented cut together dishes. Either way looks like a very plausiable idea. :thumbup: