NAR Level 2 Certification Test

A1. Which of the following National Fire Protection Association standards provides a code for high power rocketry?

A) NFPA 1122
B) NFPA 1124
C) NFPA 1125
D) NFPA 1127

NFPA 1127

A2. What part of the Federal Aviation Regulations govern rocket activity?

A) Part 95
B) Part 97
C) Part 101
D) Part 125

Part 101

A3. What is the maximum launch weight allowable for a rocket which does not require FAA waiver?

A) 4 ounces (113 grams)
B) 4.4 ounces (125 grams)
C) 1 pound (453 grams)
D) 3.3 pounds (1500 grams)

3.3 pounds (1500 grams)

A4. What is the maximum propellant weight allowable for a rocket which does not require an FAA waiver?

A) 4 ounces (113 grams)
B) 4.4 ounces (125 grams)
C) 1 pound (453 grams)
D) 3.3 pounds (1500 grams)

4.4 ounces (125 grams)

A5. What is the maximum total impulse allowed 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

There is no impulse limit

A6. What is the maximum launch weight allowable for a rocket when complying with the FAR 101 regulations for now waiver required?

A) 4 ounces (113 grams)
B) 4.4 ounces (125 grams)
C) 1 pound (453 grams)
D) 3.3 pounds (1500 grams)

3.3 pounds (1500 grams)

A7. What is the maximum propellant weight for a rocket without needing an FAA waiver?

A) 4 ounces (113 grams)
B) 4.4 ounces (125 grams)
C) 1 pound (453 grams)
D) 3.3 pounds (1500 grams)

4.4 ounces (125 grams)

A8. Which of the following is a requirement for high power certification?

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 minimum of 18 years of age

A9. What is the maximum total impulse permitted in a high power rocket per NFPA 1127?

A) 81

920 Newton-seconds
B) 40

A10. What is the maximum allowable weight for a high power rocket permitted per NFPA 1127?

A) 100 pounds
B) 400 pounds
C) 3069 pounds
D) There is no limit provided the rocket weighs less than 1/3 of the average certified thrust of the motors
intended to be ignited at launch

There is no limit provided the rocket weighs less than 1/3 of the average certified thrust of the motors intended to be ignited at launch.

A11. what is the minimum age for user certification?

A) 16 years old
B) 18 years old
C) 21 years old
D) 25 years old

18 years old

A12. 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 125 grams

The motor uses a "composite" propellant

A13. Which of the following is (are) true of a complex high power rocket per NFPA 1127?

A) The rocket is multi-staged or propelled by a cluster of rocket motors
B) The rocket contains electrical or electronic devices intended for control of the rockets functions

e.g.
staging

A14. A launch site is defined as containing areas for which of the following activities?

A) Launching
B) Recovery
C) Parking
D) All of the above

All of the above (launching

A15. A person shall fly a high power rocket only in compliance with:

A) NFPA 1127
B) Federal Aviation Administration Regulations

Part 101
C) Federal

Federal Aviation Administration Regulations Part 101

Federal

state

A16. 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

A17. 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

Low Explosive

A18. 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

21 years or older

A19. Which of the following statements are true concerning the definition of a High Power Rocket Motor?

A) Total impulse is less than 81

920 Newton-seconds
B) The total impulse is more than 160 Newton-seconds
C) Both A and B above
D) The motor must use either fiberglass or metal case materials

A20. A certified individual wants to purchase an "L" motor reloadable casing at a launch. 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

He does not require an Explosive User's Permit

A21. Which of the following (hypothetical) rocket motors is NOT a High Power Rocket?

A) An F90 with 40 grams of propellant
B) An H60 with 62 grams of propellant
C) A G35 with 66 grams of propellant
D) All of the above are High Power Rocket Motors

A G35 with 66 grams of propellant

A22. What does FAA FAR 101.29 require you to provide specifications on in filling an FAA waiver?

A) Estimated number of rockets
B) Type of propulsion (liquid or solid)

fuel(s) and oxidizer(s)
C) Description of the launcher(s) planned to be used

type of propulsion (liquid or solid)

fuel(s)

description of the launcher(s) planned to be used

including any airborne platform(s)

description of recovery system

highest altitude

above ground level

launch site latitude

longitude

any additional safety procedures that will be followed)

B1. What is the maximum net weight of regulated materials that may be stored in an indoor Type 4 magazine?

A) 10 pounds
B) 25 pounds
C) 50 pounds
D) 100 pounds

50 pounds

B2. Which of the following is NOT a requirement for an indoor magazine?

A) The magazine must be painted red.
B) The magazine must bear the words "EXPLOSIVES KEEP FIRE AWAY".
C) The magazine must bear the words "50 POUND MAXIMUM"
D) The lettering is printed in white letters at least 3 inches high

The magazine must bear the words "50 pound maximum"

B3. According to the NFPA

in which of the following locations can a Type 4 magazine be permitted

C1. What is the maximum launch angle

measured from vertical

C2. What is the maximum wind velocity allowable for launch operations?

A) 20 miles per hour
B) 25 miles per hour
C) 15 miles per hour
D) 30 miles per hour

20 mph

C3. The minimum launch site dimension for your field is 1500 feet. Assuming no public highways or occupied buildings in the area what is the minimum distance between the launch site boundary and the launcher for a 320 Newton-second motor?

A) 100 feet
B) 320 feet
C) 750 feet
D) The launcher may be located anywhere on the launch site to compensate for wind

C4. You plan to break the altitude record for H motors with a flight to 10

900 feet. You have a field that is 6000 feet by 6000 feet. You have an FAA waiver up to 12

C5. The FAA has granted a waiver for high power rocket flight to 18

000 feet for your event. Flights up to that altitude are expected. What is the minimum launch site dimension?

A) 1800 feet
B) 4500 feet
C) 9000 feet
D) 18

C6. The fAA has granted a waiver for high power rocket flight to 2500 feet for your 2xN cluster-powered rocket. What are the minimum launch site dimensions?

A) 500 feet
B) 1250 feet
C) 1500 feet
D) 4000 feet

4000 feet

C7. 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

C8. 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)

1500 feet

C9. A farm owner offers you his farm for a launch site. His house is located in the middle of the
farm

which is two (2) miles square. What is the minimum distance allowable for location of a high power launch pad from the owner's house

C10. A farm owner offers you his farm for a launch site. His house is located in the middle of the
farm

which is one quarter (1/4) mile by one quarter (1/4) mile square. Assuming you can get an FAA waiver for 2500 feet

C11. What is the minimum safe distance from a high power rocket containing a single "I" motor?

A) 200 feet
B) 100 feet
C) 75 feet
D) 50 feet

100 feet

C12. What is the minimum safe distance from a high power rocket containing three (3) "H"
motors?

A) 200 feet
B) 100 feet
C) 75 feet
D) 50 feet

200 feet

C13. What is the minimum safe distance from a high power rocket containing two (2) "K" motors?

A) 50 feet
B) 100 feet
C) 300 feet
D) 500 feet

500 feet

C14. Which of the following igniters may be ignited by the continuity test of some launch
controllers?

A) Nichrome wire
B) Flashbulbs
C) Very low current electric matches
D) Both "B" and "C" above

Flashbulbs and very low current electric matches

C15. 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

60 seconds

C16. 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

Temperature cycling

C17. Unless the motor manufacturer instructs otherwise

igniters for clustered rocket motors
should be wired together in:

A) Series
B) Parallel
C) Short Circuit
D) Open

C18. When should igniters installed in rocket motors be checked for continuity?

A) Any time
B) Only in an enclosed shelter
C) Only on the launch pad when ready for launch
D) Igniters should never be checked for continuity while installed in a rocket motor

Only on the launch pad when ready for launch

C19. Which of the following is the preferred method for attaching fins to a high power rocket?

A) Tube surface mounting
B) "Wedge" mount
C) "Though the wall" mounting
D) All fin mounting methods are all equally strong

it does not matter

"Through the wall" mounting

C20. 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

Cyanoacrylate glues (super glue)

C21. 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 glues
D) White "Elmer's" glue

White "Elmer's" glue

C22. Which of the following adhesives is the best choice for motor 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

Slow-curing epoxy adhesives

C23. The centering rings provided with your high power kit are a loose fit around the phenolic motor tube. Which of the following adhesives is the best choice for a strong joint?

A) Slow-curing epoxy adhesives
B) Cyanoacrylate glues (super glue)
C) Aliphatic resin based glues
D) "Hot melt" adhesives

Slow-curing epoxy adhesives

C24. A small hole is typically recommended near the top

but below the nosecone or payload
section shoulder

C25. When clustering combinations of black powder and composite motors

which type of rocket motor should be ignited first?

A) Composite rocket motors should be ignited first
B) Black powder rocket motors should be ignited first
C) It does not matter which motors are ignited first
D) Clusters should never mix composite and black powder motors

C26. Why should composite motors be ignited first in a mixed composite and black powder
cluster?

A) Composite motors are more difficult and take longer to ignite
B) Composite motors are more likely to "cato" than black powder motors
C) The exhaust products from black powder motors prevent composite motor ignition
D) Composite rocket motors are more powerful than black powder motors

Composite motors are more difficult and take longer to ignite

C27. If individual igniters are used for igniting a clustered model's motors

which of the following statements is typically true:

A) The launch control must have an audible as well as visual indication of igniter continuity.
B) The launch control must provide additional current to ignite the additional igniters
C) The launch control must provide higher voltage to ignite the additional igniters
D) The launch control must use a car battery as a power source

C28. What is (are) the advantages of using a "relay" type launch control?

A) It is cheaper than a non-relay launch control
B) The relay allows a better indication of igniter continuity
C) It can deliver more power to the rocket motor igniters
D) Both "B" and "C" above

It can deliver more power to the rocket motor igniters

C29. Petroleum based lubricants should not be used with the oxygen or nitrous oxide systems
used in hybrids. Why?

A) They thicken when exposed to oxygen or nitrous oxide
B) They lose their lubricating properties when exposed to oxygen or nitrous oxide
C) There is a risk of spontaneous ignition or explosion
D) The lubricant can promote corrosion of the metal components in the presence oxygen or nitrous oxide

There is a risk of spontaneous ignition or explosion

C30. Which of the following safety hazards may be associated with hybrid rocket motors?

A) High pressure gas

low temperatures (frostbite)
B) Low temperatures (frostbite)
C) Corrosive materials
D) High pressure gas

C31. The range safety officer says that your model is unsafe to fly. Who has the authority to
overturn this ruling:

A) The Launch Control Officer (LCO)
B) The individual who "checked-in" the model
C) Three certified high power fliers who agree the model is safe
D) The safety monitor's (RSO) decision cannot be overturned by anybody

The safety monitor's (RSO) decision cannot be overturned by anybody

C32. 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

The hole is used to give outside air pressure readings

C33. 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

The range safety officer (RSO)

C34. Which of the following individuals has the ultimate responsibility to ensure that the rocket was built in a safe manner?

A) The launch control officer (LCO)
B) The safety monitor (range safety officer or RSO)
C) The rocket owner/builder
D) All of the above

The rocket owner/builder

C35. 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

The outside pressure distribution is not continuous around the model

C36. Your rocket was returned from its flight with "zipper" damage where the shock cord tore through the model. What is the most likely cause:

A) Parachute ejection occurred too soon after motor burnout
B) Parachute ejection occurred too late after apogee
C) Parachute ejection occurred at apogee on a vertical flight
D) Both "A" and "B"

Parachute ejection occurred too soon after motor burnout AND parachute ejection occurred too late after apogee

C37. Your payload section

with heavy payload

C38. What is the distance around a launcher for a "J" powered model that must be cleared of easy to burn material

assuming the motor isn't "sparky?"

A) 10 feet
B) 30 feet
C) 50 feet
D) 75 feet

C39. What is the distance around a launcher for a rocket using a 3-motor cluster of J motors that must be cleared of easy to burn material

assuming the motors aren't "sparky?"

A) 10 feet
B) 30 feet
C) 50 feet
D) 75 feet

C40. What is the distance around a launcher to clear of all combustible and burnable materials 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

75 feet

C41. 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

An ingredient used in some rocket motors that causes them to eject sparks in the exhaust

C42. Consequences of inadequate motor retention can include:

A) The motor being ejected at apogee instead of the parachute

resulting in two falling objects
B) The motor being ejected from a cluster

the motor being ejected from a cluster

and flying on its own

the motor flying through the rocket

destroying it)

C43. 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

C44. 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

Its mass times the square of its velocity

C45. You have an excellent flying field

except that when the winds are from the northwest at over 10 mph

move the launch pad closer to the NW edge of the field

provided there are no roads or houses within 1500 feet

don't fly on days with problematic winds)

C46. At what time is it allowed for onboard energetics and/or electronic controls to be activated and when shall they be inhibited?

A) The function of firing circuits and onboard energetics shall be inhibited until the high power rocket is in
the launching position

than they can be activated when non-essential personal leave the pad area.
B) When the rocket is in the prep area.
C) Both "A" and "D"
D) The function of firing circuits and onboard energetics shall be inhibited prior to removing the high
power rocket from the launching position

C47. What equipment is required at launch sites?

A) Fire Suppression devices such as fire extinguishers
B) First aid kits
C) Fire suppression devices and First aid kits
D) Fire suppression devices

First aid kits

C48. You have an unproven design for a high power rocket. Which of the following is NOT an
acceptable means to ensure that it is safe to fly?

A) Fly it as a "heads up" flight on the first flight
B) Fly a smaller (non-HPR) scale model
C) Perform a swing test
D) Use a simulation program

Fly it as a "heads up" flight on the first flight

C49. 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

C50. 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

C51. When can launch organizers operate in violation of the NAR Safety Code?

A) The property owner consents
B) The local authorities give written permission
C) Local laws are followed and two thirds of the NAR Board of Trustees give written permission for a
project that offers commensurate levels of safety
D) Never

Local laws are followed and two thirds of the NAR Board of Trustees give written permission for a
project that offers commensurate levels of safety

C52. Which of the following is not a required feature of a rocket motor ignition system?

A) A removable interlock device is in series with the launch switch
B) The system is electrically operated
C) The launching switch will return to the "off" position when released
D) An audible or visual indicator shows continuity through the rocket motor igniter

An audible or visual indicator shows continuity through the rocket motor igniter

C53. 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

C54. High power rocket motors

motor reloading kits

C55. What extra constraints and launch distances cover launches when launching three or more
high power rockets simultaneously?

A) The LCO shall appoint a score keeper to see which rocket wins the liftoff
B) The minimum spectator and participant distance shall be the value set forth in Table 4.16.3 for a
complex rocket with the same total installed impulse but not more than 610 m (2000 ft)

or 1.5 times the
highest altitude expected to be reached by any of the rockets

D1. For a rocket to be stable which of the following statements is true?

A) The center of pressure (CP) must be behind the center of gravity (CG)
B) The center of pressure (CP) must be in front of the center of gravity (CG)
C) The rocket must have fins
D) The length of the body tube must be at least 5 times the model diameter

The center of pressure must be behind the center of gravity

D2. An unstable rocket can be made stable by:

A) Adding sufficient weight to the nosecone
B) Removing sufficient weight from the nosecone
C) Moving the fins sufficiently forward towards the nosecone
D) Making the rocket sufficiently shorter

Adding sufficient weight to the nosecone

D3. 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.

Determining the relative positions of the center of pressure and the center of gravity

D4. A rocket's center of pressure can be estimated by:

A) The "Barrowman" method
B) Finding the point where the model balances
C) "Cardboard cutout" method
D) Both "A" and "C" above

The "Barrowman" method AND "cardboard cutout" method

D5. An unstable rocket can usually be made more stable by:

A) Using a shorter nosecone
B) Increasing the size of the aft fins
C) Using a larger

heavier rocket motor
D) Increasing the rocket diameter

D6. 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

more stable in flight

D7. 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

All of the above (weak tubes or couplers that permit airframe bending