milehigh
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Source: Scratch-built Edmonds Aerospace design.
Designed by Robert Edmonds II.
Type: Boost Glider
Motor size: 18mm
Recovery: glide (three vehicles), streamer (booster vehicle)
Booster length: 42.86m (16.9 in.)
Booster diameter: 18.7mm (.736 in.)
Booster weight: 24.3g (.86 oz.)
Glider length (typ.): 27.2cm (10.71 in.)
Glider wingspan (typ.): 23.2cm (9.1 in.)
Glider weight (typ.)*: 7.1g (.25 oz.)
Overall model length: 56.2cm (22.1 in.)
Overall model weight empty*: 45.5g. (1.6 oz.)
*Trim clay weight not included
Color scheme: White, black, blue, red, silver trim.
Completion date: September 21, 2023
Triple The Glider Fun!
My favorite aspect of the model rocketry hobby is building and flying boost/gliders and rocket gliders.
When I happened upon published plans for the Edmonds Deltie Airshow, I knew immediately that such a model was a must-have for the fleet.
Coupled with the fact that there are three gliders in the mix, they are of an unusual delta-wing planform that has a lot of that 'cool' factor.
The model was actually started back in July, 2022 alongside a number of other builds. It just takes me a long time to build and complete a model rocket, what with all of the other hobbies and activities that vie with rocketry work-bench time.
This build is fairly straight-forward albeit with a lot of balsa parts.
In the original kit, the glider parts were all pre-cut with the inclusion of numerous interlocking assembly tabs. The kit was intended for rocketeers building their first glider model.
I chose to cut all of the parts out of balsa sheet stock minus the tabs. The fuselage, wings, and vertical stabs are all butt-jointed on this version.
The booster rocket is constructed from Estes components. One deviation made on the booster fins was the substitution of basswood stock for the glider attachment parts. I found that the original balsa pieces were far too weak and broke easily.
The Edmonds plans called for flying the Airshow with gliders unfinished.
I applied my usual glider finishing method of spraying on a thin application of white primer, light sanding, followed by color and markings using permanent markers.
The booster rocket is brush-painted with gloss hobby acrylics.
This should be a very fun bird to launch on a large field. It will likely require the employment of a substantial recovery crew!
