What are three methods used to shift the center of pressure (CP) aft?
• Make the rocket shorter, use larger fins, increase the number of fins. • Make the rocket shorter n use smaller fins, add weight to the nose. • Make the rocket shorter n change the number of fins, use a longer launch rod, • What is the definition of coefficient of drag (Cd)? • A dimensionless number that represents the effect of gravity and Mach number of the rocket. • A dimensionless number representing the rocket configuration, Mach number and angle of attack. • A dimensionless number that represents the friction of the launcher and launch velocity. • What happens to the coefficient of drag (Cd) as the rocket approaches the speed of sound? • The Cd decreases. • The Cd stays the same. • The Cd increases. • For a subsonic rocket, what major factors affect the coefficient of drag (Cd)? • Motor thrust, body diameter, nosecone shape and fin shape. • Speed, airframe dimensions, nosecone shape and fin shape. • Gravity, airframe dimensions, nosecone shape and fin shape. • What effect does a
