HPR Level 2 Technical Questions
The quiz includes a random selection of 25 questions. Answer each of the questions and then click on the FINISH button at the bottom of the quiz.
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#1. The center of pressure (CP) of a rocket is generally defined as:
#2. Which describes the thrust curve of a regressive motor burn?
#3. What happens to the coefficient of drag (Cd) as the rocket approaches the speed of sound?
#4. What is the major issue with accelerometer-based altimeters?
#5. What are the three forces acting upon a rocket during flight?
#6. What effect does a boat tail have on a subsonic rocket’s coefficient of drag (C d)?
#7. Which of the motors listed below has the highest total impulse?
#8. What is the purpose of a launch rod, rail or tower?
#9. The average thrust of a rocket motor is 100 Newtons, and the burn time is 4 seconds. What is the total impulse?
#10. What are three methods used to shift the center of pressure (CP) aft?
#11. What is the purpose of a launch lug or rail buttons?
#12. How can a statically unstable rocket be made stable?
#13. In general terms, the total impulse of a rocket motor can be described as:
#14. What ordinarily happens to the center of gravity (CG) of a rocket during a solid rocket motor’s thrusting phase?
#15. Which of the motors listed below has the highest average thrust?
#16. The flight of a high-power rocket can be separated into three portions; they are:
#17. What is the primary requirement for a rocket motor ignitor?
#18. What can happen if all the motors of a cluster do not ignite at launch?
#20. Which describes the thrust curve of a progressive motor?
#21. What are three methods used to shift the center of gravity (CG) of a rocket forward?
#23. For an inherently stable rocket, which statement about the center of gravity (CG) and the center of pressure (CP) is true?
#24. What is the most common oxidizer in commercially available high power composite solid rocket motors?
#25. 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?
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