L2 HPR Technical Quiz

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#1. The flight of a high power rocket can be separated into three portions; they are:

#2. What are the three major factors that determine the maximum altitude of a high power rocket in vertical flight?

#3. A Bates grain has an essentially neutral thrust curve because:

#4. What is a shred?

#5. Rocket A is descending at 10 feet per second, rocket B weighs the same but is descending at 20 feet per second. Which statement is true?

#6. How can a statically unstable rocket be made stable?

#7. Which describes the thrust curve of a progressive motor?

#8. The center of pressure (CP) of a rocket is generally defined as:

#9. Which describes the thrust curve of a regressive motor burn?

#10. How do you convert Newtons of thrust to pounds of thrust?

#11. The definition of coefficient of drag (C d ) is:

#12. What is the oxidizer most commonly used in a commercial hybrid rocket motor?

#13. What does the motor designation I220-8 mean?

#14. For a subsonic rocket, what factors most greatly affect the coefficient of drag (C d )?

#15. What is the most common oxidizer in commercially available high power composite solid rocket motors?

#16. Which of the motors listed below has the highest total impulse?

#17. For a cluster rocket, which construction technique will minimize the effect of one motor failing to ignite?

#18. You are at the launch site and decide to fly your rocket on a heavier motor than you simulated it on. Which statement regarding CG is true?

#19. When using a pressure-sensor altimeter in a rocket that will not reach Mach 1:

#20. What is a Newton?

#21. Which of the following is most likely in dual-deployment rockets that use a drogue and a main parachute?

#22. Most APCP (ammonium perchlorate composite propellant) rocket motors are central-burning rather than endburning:

#23. In general terms, the specific impulse of a rocket motor is:

#24. For an inherently stable rocket, which statement about the center of gravity (CG) and the center of pressure (CP) is true?

#25. What are the three forces acting upon a rocket during flight?

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