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Wing sweep also has a dihedral effect. I'd need to go grab my aerodynamics book to tell you how much, though.

10.8 oz on an E6 should fly just fine. I'm curious, when are we going to get the all-up stack? :P (I've got the aerodynamic stability analysis done if you ever actually want to do it.)

Yeah, the 5 foot rail would make this an absolute non-issue.

Probably a combo of rod whip and low pitch/yaw damping. Something similar to that actually plagued real life x-planes. https://en.wikipedia.org/wiki/Inertia_coupling

I don't have any photos, but the easy thing to do is to tape the igniter to a dowel rod, clip the leads to it, then set the glider down on the igniter. As long as the igniter is firmly in the nozzle, there's no need to install the plastic plug.

You can grab a slightly smaller one from ASP if you want. https://www.asp-rocketry.com/ecommerce/Black-Brant-IV-Model-Rocket-Kit-24mm-.cfm?item_id=1237&parent=8&navPanel=

Highly agree with using some graphite. For the thin ply slide rails, just drawing on it with a #2HB pencil will help, though the powdered stuff works a little better. You'll probably find that moisture and changes in ambient temperature might also affect the fit. If you ever have a problem, a...

I've built a George Gassaway Stiletto B with very light wood, though I think I built it with 3/16" wood. With 1/8" thick, I'd be inclined to keep the heavier wood.

The NX8 is a fine TX for this application. Personally, I switched to OpenTX/EdgeTX-based transmitters a little while ago myself. They are far more flexible than Spektrum AirWare TXs, but also have a steeper learning curve. The receivers are a fair bit cheaper too. This is the one I've been...

The spacer was to keep it at an E6 since the load was designed specifically for us S8 nuts to practice with.

Thanks for the report! Always fun to see other folks doing NRC competition.

I've used this app successfully for many years in FAI Space Model cups and NAR competition meets. You need to get bearing information from somewhere other than the app, say an orienteering compass, but it works great and shows your track along with the bearing line you want...

Nope, just let the exhaust hit the tail. I've been doing that for years now. You could do the Colibri-V if you're really worried about it, but I have seen no problems as long as there's decent separation between the motor and the tail.

Alternatively, several of the Art Hobby gliders would work well. This would make a good first D-powered model. https://www.arthobby.com/index.php?page=item&category=29&sub_category=31&item=255

Honestly, if you're still at the crash a lot stage of flying, you'd probably be better served by an electric launch glider. You can't beat the UMX or 2m E-Flite Radian for this purpose. UMX Radian: https://www.horizonhobby.com/product/umx-radian-bnf-basic-with-as3x-and-safe-select/EFLU2950.html...

Scaling from the photo, it looks like ~8.5".

Congrats! You earned it! The funny thing about R/C gliders (rocket-gliders in particular, but boost-gliders too) is that the turn around time for prep is very short. To the point that I can easily get six 6-minute flights off in well under an hour. Be careful, they really eat motors! :P

I'm 98% certain it's a BT-5. A B6/C6 would be way too much power for a glider this size. I had one way back in 2017 and got well over a minute on a 1/2A. Highly recommend a 1/2A3-2T for the first flight.

Would agree. If you're looking for something in that size, the J&H Carbonette 19 is a good place to start. https://jhaerospace.com/product/carbonette-19-micro-r-c-dlg-boost-glider/

Check here for lots of tips: https://www.nar.org/contest-flying/competition-guide/duration-events/boostglide-duration/ In particular, Ed LaCroix's writeup on his Maxima glider is great reading for how to trim. https://www.nar.org/wp-content/uploads/2014/05/Maxima-A-BG-Lacroix.pdf