Page Comparison

Can 1 (Ryan)

FA = 0.15m^2

Initial/base draft (Ryan)

Cd = 0.0612

Fd = 1.098

Can 2 (Ryan)

FA = 0.147m^2

Shrank down front of bottom profile (this was a mistake don’t do that)

Shrank down tail on the side profile

Cd = 0.0706

Fd = 1.266

Drop 3

FA = 0.13 m^2

Shrink down tail side profile to reduce low pressure drag

Shrink frontal Area

Cd = 0.066

Fd = 1.036

Drop 4

FA = 0.136 m^2

experiment with rounding out front side profile to give a more “airfoil”-y shape?

definitely worse

Cd = 0.072

Fd = 1.173

Drop 5

FA = 0.1365m^2

very slight concave front of side profile to improve transition from front fillet

point of max frontal area pushed back to 1m from 0.9

Cd = 0.0642

Fd = 1.049

Bullet v1 (Gavin)

FA = 10.458 1458 m^2

Initial Bullet design

• Bullet style does not perform as well as Teardrop

Cd = 0.0701

Fd = 1.222

Can 2 (Ryan)

Teardrop v1

Image Added

FA = 0.1365 m^2

Base teardrop canopy

Cd = 0.0666

Fd = 1.088

Teardrop v3

Image Added

FA = 0.147m^2

Shrank down front (this was a mistake don’t do that)

Shrank down tail on the side profile166 m^2

Bottom profile made a little straighter, especially near front of canopy

Cd = 0.0668

Fd = 1.328

Teardrop v3.5

Image Added

FA = 0.166 m^2

Same canopy as v3, except straightened side profile at the back

Performed slightly worse - we can assume that a straight profile will not perform as well (tested in v5.5 - 5.6 as well)

Cd = 0.0669

Fd = 1.330

Teardrop v4

Image Added

FA = 0.1478

Flatter side profile , performed much worse than something slightly rounder like v3

Cd = 0.0735

Fd = 1.300

Teardrop v4.5

Image Added

FA = 0.1478

Rounded the side profile and bottom profile out at the front

Cd = 0.07060650

Fd = 1.266150

Teardrop v1v5

Image RemovedImage Added

FA = 10.365 m^2Base teardrop canopy1478

Rounded side profile more

Cd = 0.06660649

Fd = 1.088

Can 3

Image Removed

Image Removed

147

Teardrop v5.5

Image Added

FA = 0.13 m^2

Shrink down tail side profile to reduce low pressure drag

Shrink frontal Area1410

Slightly straighter side profile in back half

Very low FA

Cd = 0.0639

Fd = 1.078

Teardrop v5.6

Image Added

FA = 0.1410

Only change from 5.5 is a very straight back profile, which again did not perform as well

Cd = 0.066 0667

Fd = 1.036126