#### delta22

##### Well-Known Member

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This project, the "Spinning Saucer of the Apocalypse" (= SSoA) is a 1.8x upscale of the Turbine Rocket Saucer.

Planning - design improvements:

TRS has a flat bottom on its saucer ring, which hurts its stability as it descends, as the saucer to want to tip to spill air. To try to improve stability the SSoA's ring will have a triangular cross section that is equally angled top and bottom.

TRS has a sharp outer edge which takes damage every 2nd or 3rd flight and has been repeatedly repaired. SSoA will have rounded edges where it contacts the ground, both for the durability of the saucer and for improved safety if it ever comes in contact with a spectator as it lands.

Planning - size:

I wanted to be able to fly the SSoA on 4x G motors, which is about four times the total impulse of TRS. Shooting for similar flight profile, targeted area that was less than 4x and weight that was more than 4x of TRS.

Upscale....Weight....Area.....Diameter

1.6x ........4x..........2.56x....32"

1.8x.........5.8x........3.2x.....36"

2x............8x..........4x........40"

So went with a 1.8x upscale with a 36" diameter.

Below are some arty pictures I took at different exposures of the Turbine Rocket Saucer sitting inside the ring of the Spinning Saucer of the Apocalypse.