Parachute Inflation and Opening Shock

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Outline • Maximum parachute structural loads almost always occur during inflation • Performance predictions frequently require accurate inflation time predictions Parachute Inflation and Opening 2
Why Study Parachute Inflation Theory ? • Maximum parachute structural loads almost always occur during inflation • Performance predictions frequently require accurate inflation time predictions – Usually less important than loads Parachute Inflation and Opening 3
Page 1: Parachute Inflation and Opening Sho
Page 5 and 6: Is Parachute Inflation Theory a •
Page 7 and 8: Steady Flow Equation • Bernoulli
Page 9 and 10: Steady Flow Drag Force • Drag for
Page 11 and 12: Parachute Opening Shock • The sim
Page 13 and 14: Infinite Mass Opening Shock Factor
Page 15 and 16: Finite Mass Opening Shock Factor
Page 17 and 18: Finite Mass Opening Shock Factor
Page 19 and 20: Unsteady Flow Equation • Bernoull
Page 21 and 22: Unsteady Flow Kinetic Energy • Fo
Page 23 and 24: Ballistic Equations of Motion • T
Page 25 and 26: Dimensionless Variables and Paramet
Page 27 and 28: Unsteady Forces on Inflating, Decel
Page 29 and 30: Drag Area vs Time Inflation Models
Page 31 and 32: Similar Shapes Used in Continuity E
Page 33 and 34: Constant Distance Theory Models •
Page 35 and 36: Simple Dynamic Inflation Model •
Page 37 and 38: Parachute Geometry for Model • Si
Page 39 and 40: Simple Dynamic Inflation Model •
Page 41 and 42: Non-dimentional Inflation Times for
Page 43 and 44: Opening Shock Factor for all PEPP P
Page 45 and 46: More General Dynamic Inflation Mode
Page 47 and 48: Forces on Mass Elements • Two par
Page 49 and 50: Use of Dynamic Inflation Model •
Page 51 and 52: Multi-Element Dynamic Inflation Mod
Page 53:
Parachute Inflation and Opening 53
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Parachute Inflation and Opening Shock

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