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Images from the Advisory Group for Aerospace Research & Development (AGARD).

https://apps.dtic.mil/dtic/tr/fulltext/u2/a246343.pdf

S_o = canopy surface area including the vent area and all openings and slots in canopy, ft^2

C_D_o = parachute drag coefficient related to canopy surface area, dimensionless

x_o and x_p are interchangeable in this directory.

• low-cost replacement for the ringslot parachute
• stable, design decreases oscillation

• meant too be used more for aircraft, stabilization and slowing down of mines

Disk-band-gap

• verified inflation and drag performance for M = 0.05 - 2.7
• good inflation at low dynamic pressure
• good stability
• lower mass than conical ribbon
• general application = supersonic drogue

• good for main parachute, not really drogue

• good for supersonic deployment up to Mach 3.0
• useful for drogue application at supersonic speeds
• hemisflo experiences less flutter and breathing of parachute
• good performance at higher dynamic pressures

• Phoenix drogue will not be deployed supersonically, so this is not needed

• good drogue deployment at speeds of M < 1.5
• good structural integrity
• stable
• Apollo and Mercury drogues

• might be hard to manufacture

• good damping characteristics
• pressure distribution independent of oscillation angle
  • high stability

• low drag - used for stabilizing payload that is supposed to fall quickly

• useful for decelerating object with large wake behind it

• more useful for aircraft

• optimal for use at high altitudes
• can withstand supersonic velocities
• generates a high amount of drag for its mass

• not useful, not really seen in industry since Goodyear
• has not been tested that much