NAR High Power Level 2

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A - 5
What is the maximum total impulse allowable for a rocket which does not require an FAA waiver?
A. 80 Newton-seconds
B. 160 Newton-seconds
C. 320 Newton-seconds
D. There is no impulse limit.
A - 6
What is the maximum launch weight allowable for a rocket when complying with the FAA FAR 101 regulations for no waiver required?
A. 4 ounces (113 grams)
B. 4.4 ounces (125 grams)
C. 1 pound (453 grams)
D. 3.3 pounds (1500 grams)
A - 8
Which of the following is a requirement for high power certification [Note: Excludes NAR Jr. HPR program]:
A. The ability to understand written English instructions
B. A minimum of 18 years of age
C. A citizen of the United States of America
D. No felony convictions
A - 11
What is the minimum age for user certification? [Note: Excludes NAR Jr. HPR program]
A. 16 years old
B. 18 years old
C. 21 years old
D. 25 years old
A - 12
Which of the following characteristics does not meet the definition of a High Power Rocket Motor?
A. Total impulse is more than 160 Newton seconds
B. The motor uses a "composite" propellant
C. Average thrust greater than 80 Newtons
D. Propellant weight greater than 62.5 g
A - 15
A person shall fly a high power rocket only in compliance with:
A. NFPA 1127
B. Federal Aviation Administration Regulations, Part 101
C. Federal, state, and local laws, rules, regulations, statutes, and ordinances
D. All of the above
A - 16
Which of the following statements is always true concerning the definition of a hybrid rocket motor?
A. The fuel component is composed of either paper or plastic.
B. The fuel is in a different physical state (solid, liquid, or gaseous) than the oxidizer.
C. The oxidizer component is nitrous oxide.
D. Both A and C above
A - 17
Per the ATF-Explosives Law and Regulation (Orange Book) what kind of explosive material is black powder?
A. High Explosive
B. Low Explosive
C. Blasting Agent
D. Non-explosive
A - 18
The minimum age for an explosive permit application is:
A. 16 years or older
B. 18 years or older
C. 21 years or older
D. 25 years or older
A - 21
A certified individual wants to purchase a "L" motor reloadable casing at a launch in a state other than his residence. Which of the following is true?
A. He must possess an Explosives User's Permit.
B. He does not require an Explosives User's Permit.
C. He must pay in advance for the motor purchase.
D. He must use the reload kit on the same day as purchase.
B - 1
What is the maximum net propellant weight that may be stored in a indoor Type 3 or Type 4 magazine?
A. 10 pounds
B. 25 pounds
C. 50 pounds
D. 100 pounds
C - 7
In no case shall the minimum launch site dimension be less than ____ the estimated altitude of the high power rocket or ____.
A. 1/4, 1500 feet
B. 1/2, 1500 feet
C. 1/4, 2500 feet
D. 1/2, 2500 feet
C - 8
Your launch site borders on an interstate freeway. What is the minimum distance allowable for location of a high power launch pad from the interstate freeway?
A. 750 feet
B. 1500 feet
C. 3000 feet
D. 5280 feet (1 mile)
C - 15
In the event of a misfire how long should you wait before approaching the launch pad?
A. 15 seconds
B. 60 seconds
C. 5 minutes
D. As soon as signs of smoke are gone
C - 16
Which of the following is most likely to cause catastrophic failure of a black powder rocket motor?
A. Temperature cycling
B. Electromagnetic fields
C. Vibration
D. High altitude
C - 20
Which of the following adhesives should not be used on rubber (or elastic) shock cord components?
A. Slow-curing epoxy adhesives
B. Cyanoacrylate glues (super glue)
C. Aliphatic resin-based (yellow) glues
D. White "Elmer's" glue
C - 21
Which of the following adhesives is most likely to be weakened under humid or wet weather conditions?
A. Slow-curing epoxy adhesives
B. Cyanoacrylate glues (super glue)
C. Aliphatic resin-based (yellow) glues
D. White "Elmer's" glue
C - 22
Which of the following adhesives is the best choice for engine mount construction using phenolic motor tubes?
A. Slow-curing epoxy adhesives
B. Cyanoacrylate glues (super glue)
C. Aliphatic resin based glues
D. "Hot melt" adhesives
C - 32
Parachute ejection systems that sense barometric pressure for activation need a vent to the outside in their compartment because:
A. This hole allows excessive ejection charge pressures to vent
B. The hole is used to give outside air pressure readings
C. The hole vents internal air pressure as the rocket gains altitude to prevent internal air pressure from prematurely separating the model.
D. The hole allows easy verification that the battery is installed
C - 33
Which of the following individuals has the final authority in permitting a high power rocket to fly?
A. The launch control officer (LCO)
B. The range safety officer (RSO)
C. The check-in officer
D. The rocket owner
C - 35
Parachute ejection systems that sense barometric pressure can malfunction during supersonic flight because:
A. Aerodynamic heating changes the values of electronic components
B. The outside pressure distribution is not continuous around the model
C. Static discharges will "zap" sensitive electronic components
D. Both answers A and B are correct
C - 37
Your payload section, with heavy payload, separated from your model immediately after motor burnout. What might be the cause?
A. The center of pressure at burnout was behind the center of gravity for the model
B. The payload shoulder was too loose in the body tube
C. The rocket motor had a failure of its delay system
D. Both B and C are correct.
C - 40
What is the distance around a launcher for a rocket using a single J motor that burns a titanium sponge to emit sparks?
A. 30 feet
B. 50 feet
C. 75 feet
D. 150 feet
C - 41
What is "titanium sponge?"
A. A substitute for ejection wadding
B. An ingredient used in some rocket motors that causes them to eject sparks in the exhaust
C. An effective cleaning tool for high power rocket motor casings
D. A lightweight material used in nose cones on supersonic rockets
C - 43
According to NAR studies, the vast majority of unsuccessful flights fail because of
A. Rocket designs that are unstable
B. Rocket motor malfunctions
C. Recovery system failures
D. Rockets that are structurally unsound.
C - 44
The kinetic energy of a descending rocket is a function of
A. Its mass
B. Its velocity
C. Its mass times its velocity.
D. Its mass times the square of its velocity.
C - 45
You have an excellent flying field, except that when the winds are from the northwest at over 10 mph, rockets often drift into neighboring fields where you don't have permission to fly. Your alternatives include:
A. Limit flights to lower altitudes so rockets stay on the field.
B. Move the launch pad closer to the NW edge of the field, provided there are no roads or houses within 1500 feet.
C. Don't fly on days with problematic winds.
D. All of the above.
C - 49
Your high-power rocket lands in a power line. Which of the following is true?
A. You can retrieve it if the power line is on a wooden (not metal) pole.
B. You must leave it alone and you must call the power company.
C. You can retrieve it if you have a non-conductive tool, such as a "hot-stick".
D. You can retrieve it if part of it is already on the ground.
C - 50
Your field is 1500 x 1500 feet, and your FAA waiver is 3000 feet AGL. If you use parachutes sized to bring your rocket down at 20 feet per second, what is the maximum wind you can fly in for rockets that fly to the waiver altitude?
A. You are limited only by the HPR maximum wind of 20 miles per hour.
B. You can fly at 15 mph, if you have the pads at the upwind edge of the field and tilt into the wind.
C. You can fly in winds up to about 6 miles an hour, if you have the pads at the upwind edge of the field and the rocket flies vertically.
D. This field can only be used in calm winds for flights to the waiver altitude.
C - 53
Which of the following are prohibited activities for participants prepping or launching high power rockets and for spectators in the prepping areas?
A. Consumption of alcohol
B. Use of medication that could affect judgment, movement, or stability
C. Both A and B above
D. None of the above
C - 54
High power rocket motors, motor reloading kits, and pyrotechnic modules shall be stored at least ____ away from smoking, open flames, and other sources of heat.
A. 10 feet
B. 25 feet
C. 50 feet
D. 75 feet
D - 3
Rocket stability can be estimated by:
A. Center of pressure "Barrowman" equations
B. "Cardboard cutout" method
C. Determining the relative positions of the center of pressure and center of gravity
D. Stability cannot be estimated before a test flight.
D - 6
During boost a rocket powered by a solid rocket motor tends to become:
A. Less stable in flight
B. More stable in flight
C. No change in stability
D. Unstable
D - 7
Which of the following can cause unstable flight?
A. Weak tubes or couplers that permit airframe bending.
B. Misaligned motor mount tube or motor nozzle.
C. Inadequate airspeed leaving the launch tower on a breezy day.
D. All of the above.
E - 3
What does the "5" in the motor designation H100-5 stand for?
A. It is the rocket motor burn time.
B. It is the peak thrust (in kilograms) of the rocket motor.
C. It is the average thrust of the rocket motor.
D. It is the ejection charge delay time.
E - 7
You have an H64-8 rocket motor which has been certified to have a total impulse of 320.00 Newton seconds. What is the approximate burn time for this motor?
A. 3 seconds
B. 5 seconds
C. 8 seconds
D. 10 seconds
E - 8
The manufacturer's test data shows a total impulse of 690 Newton-seconds for your motor. What impulse class does your motor represent?
A. "H"
B. "I"
C. "J"
D. "K"