NAR HPR Level 2 Certification Practice Exam

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Question A2
What part of the Federal Aviation Regulations govern rocket activity?
A. Part 97
B. Part 125
C. Part 101
D. Part 95

 

Question A3
What is the maximum launch weight allowable for a rocket which does not require a FAA Certificate of Waiver or Authorization (COA)?
A. 4 ounces (113 grams)
B. 3.3 pounds (1500 grams)
C. 4.4 ounces (125 grams)
D. 1 pound (453 grams)

 

Question A4
What is the maximum propellant weight allowable for a rocket which does not require a FAA Certificate of Waiver or Authorization (COA)?
A. 1 pound (453 grams)
B. 3.3 pounds (1500 grams)
C. 4 ounces (113 grams)
D. 4.4 ounces (125 grams)

 

Question A7
What is the maximum allowable weight for a High Power Rocket permitted per NFPA 1127?
A. 400 pounds
B. 3069 pounds
C. 100 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

 

Question A10
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, recovery initiation
C. The rocket uses other than parachute or streamer recovery, e.g. helicopter or glide recovery
D. Both "A" and "B" above

 

Question A11
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

 

Question A12
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

 

Question A17
Which of the following (hypothetical) rocket motors is NOT a High Power Rocket Motor?
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

 

Question A19
Which of the following are operating limitations for Class 2 High Power Rockets per the FAA's FAR 101 Regulations?
A. At any altitude where clouds or obscuring phenomena of more than five-tenths coverage prevails
B. At any altitude where the horizontal visibility is less than five miles
C. Into any cloud
D. All of the above

 

Question A20
According to NFPA 1127, a High Power Rocket shall only be launched if:
A. It contains any combination of motors having 40,960 Newton-secondsof total impulse or less
B. It contains a recovery system that is designed to return all parts to the ground intact and at a landing speed which the rocket does not present a hazard
C. It utilizes an electronically actuated recovery system as either a primary or backup deployment method if the installed total impulse is greater than 2560 Newton-seconds
D. All of the above

 

Question B2
What does the "100" in the motor designation H100-5 stand for?
A. It is the manufacturer's retail price code
B. It is the average thrust in Newtons of the rocket motor
C. It is the rocket motor burn time in seconds
D. It is the peak thrust in pounds of the rocket motor

 

Question B4
What are the units of measurement for the "100" in the motor designation H100-5?
A. Newtons
B. feet per second
C. Newtons per second
D. Newton-seconds

 

Question B9
The manufacturer's test data shows an average thrust of 100 Newtons for 6 seconds for your motor. What impulse class does your motor represent?
A. "K"
B. "I"
C. "J"
D. "H"

 

Question C2
What is the maximum wind velocity allowable for launch operations?
A. 30 miles per hour
B. 25 miles per hour
C. 20 miles per hour
D. 15 miles per hour

 

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

 

Question C5
The FAA has granted a waiver for high power rocket flight to 18000 feet for your event. Flights up to that altitude are expected. What is the minimum launch site dimension?
A. 18,000 feet
B. 4500 feet
C. 1800 feet
D. 9000 feet

 

Question 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. 5280 feet (1 mile)
C. 1500 feet
D. 3000 feet

 

Question 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, assuming it is occupied?
A. You cannot launch unless the house is empty
B. 1500 feet
C. 750 feet
D. 3000 feet

 

Question C12
What is the minimum safe distance from a high power rocket containing three (3) "H" motors?
A. 50 feet
B. 200 feet
C. 75 feet
D. 100 feet

 

Question C13
What is the minimum safe distance from a high power rocket containing two (2) "K" motors?
A. 100 feet
B. 300 feet
C. 50 feet
D. 500 feet

 

Question C16
Which of the following is most likely to cause catastrophic failure of a black powder rocket motor?
A. High altitude
B. Vibration
C. Temperature cycling
D. Electromagnetic fields

 

Question C18
When should igniters installed in rocket motors be checked for continuity?
A. Only in an enclosed shelter
B. Any time
C. Only on the launch pad when ready for launch
D. Igniters should never be checked for continuity while installed in a rocket motor

 

Question C19
Which of the following is the preferred method for attaching fins to a high power rocket?
A. All fin mounting methods are all equally strong; it does not matter
B. Tube surface mounting
C. "Though the wall" mounting
D. "Wedge" mount

 

Question C25
When clustering combinations of black powder and composite motors, which type of rocket motor should be ignited first?
A. Clusters should never mix composite and black powder motors
B. It does not matter which motors are ignited first
C. Black powder rocket motors should be ignited first
D. Composite rocket motors should be ignited first

 

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

 

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

 

Question 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 safety monitor's (RSO) decision cannot be overturned by anyone
C. Three certified high power fliers who agree the model is safe
D. The individual who "checked-in" the model

 

Question C32
Parachute ejection systems that sense barometric pressure for activation need a vent to the outside in their compartment because:
A. The hole is used to sample air pressure outside the rocket's airframe
B. This hole vents internal air pressure as the rocket gains altitude to prevent internal air pressure from prematurely separating the model
C. This hole allows excessive ejection charge pressures to vent
D. The hole allows easy verification that the battery is installed

 

Question 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"

 

Question C37
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

 

Question 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. 75 feet
D. 50 feet

 

Question C41
What is "titanium sponge?"
A. A substitute for ejection wadding
B. An effective cleaning tool for high power rocket motor casings
C. An ingredient used in some rocket motors that causes them to eject sparks in the exhaust
D. A lightweight material used in nose cones on supersonic rockets

 

Question C43
According to NAR studies, the vast majority of unsuccessful flights fail because of:
A. Rocket motor malfunctions
B. Rockets that are structurally unsound
C. Recovery system failures
D. Rocket designs that are unstable

 

Question C44
The kinetic energy of a descending rocket is a function of:
A. Its mass
B. Its mass times its velocity
C. Its velocity
D. Its mass times the square of its velocity

 

Question C46
When should onboard energetics and/or electronic controls be activated and when should 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, and doing so only when non-essential personal are not in the pad area

 

Question 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 can retrieve it if you have a non-conductive tool, such as a "hot-stick"
C. You must leave it alone and you must call the power company
D. You can retrieve it if part of it is already on the ground

 

Question 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, what is the maximum wind you can fly in for rockets that fly to the waiver altitude?
A. You can fly in winds up to about 6 miles an hour, if you have the pads at the upwind edge of the field
B. You can fly at 15 mph, if you have the pads at the upwind edge of the field, tilt into the wind and the rocket flies vertically
C. You are limited only by the HPR maximum wind of 20 miles per hour
D. This field can only be used in calm winds for flights to the waiver altitude

 

Question D2
An unstable rocket can be made stable by:
A. Removing sufficient weight from the nosecone
B. Moving the fins sufficiently forward towards the nosecone
C. Adding sufficient weight to the nosecone
D. Making the rocket sufficiently shorter

 

Question D6
During boost a rocket powered by a solid rocket motor tends to:
A. Become unstable
B. Become less stable in flight
C. Become more stable in flight
D. Have no change in stability

 

Question 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

 

Question E1
What is the airspeed velocity of an unladen swallow?
A. 1 furlong per fortnight
B. Mach 1
C. African or European?
D. c