L2 HPR Technical Quiz

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#1. What is a cato?

#2. What can happen if all the motors of a cluster do not ignite at launch?

#3. What is a Newton?

#4. Which of the motors listed below has the highest average thrust?

#5. What is NH 4 ClO 4 ?

#6. What is the purpose of a launch rod, rail or tower?

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

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

#9. What typically happens to a marginally stable rocket with a hybrid motor during the thrusting phase?

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

#11. A rocket with a motor cluster consisting of a central composite motor and four black powder motors, using five identical igniters:

#12. What is the major issue with accelerometer-based altimeters?

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

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

#15. When doing an air-start of an L class motor, which of the following would be considered the safest configuration?

#16. When using an accelerometer-based altimeter in a rocket that may exceed Mach 1:

#17. What is a shred?

#18. A 4" diameter rocket with its motor is determined to have the center of gravity (CG) four inches behind the center of pressure (CP). Is this a rocket likely to be stable?

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

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

#21. 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?

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

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

#24. What are three methods used to shift the center of pressure (CP) aft?

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

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