NAR HPR Level 2 Certification Practice Exam

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

 

Question A5
Which of the following is a requirement for High Power Rocket Motor User Certification [Note: Excludes NAR Jr. HPR Participation Program]:
A. The ability to understand written English instructions
B. A citizen of the United States of America
C. No felony convictions
D. A minimum of 18 years of age

 

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 A15
You are attending a launch where the sky is almost completely obscured by clouds at 5,000 feet except for a ~1,000 foot wide "hole" directly over the launch pads. Is it okay to launch a High Power Rocket to 6,000 feet if there’s a Certificate of Waiver or Authorization (COA) granting Class 2 flights up to 8,000 feet?
A. Yes, as long as the High Power Rocket stays within the cloud opening
B. No, the five-tenths coverage and horizontal visibility limitations apply
C. Yes, as long as the RSO approves the launch and the COA is active
D. Both "A" and "B" above.

 

Question A16
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. The motor must use either fiberglass or metal case materials
D. Both A and B 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 A18
What information does FAA FAR 101.29(a) require you to provide when filing for FAA Launch Authorization?
A. Estimated number of rockets and type of propulsion (liquid or solid), fuel(s) and oxidizer(s)
B. Description of the launcher(s) planned to be used, including any airborne platform(s) and description of recovery system
C. Highest altitude, above ground level, expected to be reached, launch site latitude, longitude, and elevation, and any additional safety procedures that will be followed
D. All of the above

 

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 B3
What does the "5" in the motor designation H100-5 stand for?
A. It is the peak thrust (in kilograms) of the rocket motor
B. It is the rocket motor burn time
C. It is the ejection charge delay time
D. It is the average thrust of the rocket motor

 

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

 

Question B6
Assuming that each motor has the full allowable impulse, how many "H" motors have the same total impulse as a single "J" motor?
A. 2
B. 4
C. 1
D. 3

 

Question C1
What is the maximum launch angle, measured from vertical, for a high power rocket?
A. 10 degrees
B. 15 degrees
C. 20 degrees
D. 25 degrees

 

Question C2
What is the maximum wind velocity allowable for launch operations?
A. 20 miles per hour
B. 30 miles per hour
C. 25 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. 750 feet
B. 320 feet
C. 100 feet
D. The launcher may be located anywhere on the launch site to compensate for wind

 

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. 5280 feet (1 mile)
B. 1500 feet
C. 3000 feet
D. 750 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. 750 feet
B. You cannot launch unless the house is empty
C. 1500 feet
D. 3000 feet

 

Question C11
What is the minimum safe distance from a high power rocket containing a single "I" motor?
A. 50 feet
B. 100 feet
C. 75 feet
D. 200 feet

 

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

 

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

 

Question C17
Unless the motor manufacturer instructs otherwise, igniters for clustered rocket motors should be wired together in:
A. Open
B. Parallel
C. Series
D. Short Circuit

 

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 C21
Which of the following adhesives is most likely to be weakened under humid or wet weather conditions?
A. Slow-curing epoxy adhesives
B. White "Elmer's" glue
C. Aliphatic resin based glues
D. Cyanoacrylate glues (super glue)

 

Question C22
Which of the following adhesives is the best choice for motor mount construction using phenolic motor tubes?
A. Cyanoacrylate glues (super glue)
B. Aliphatic resin based glues
C. Slow-curing epoxy adhesives
D. "Hot melt" adhesives

 

Question C24
A small hole is typically recommended near the top, but below the nosecone or payload section shoulder, of a high power rocket's booster section. Why?
A. This hole allows excessive ejection charge pressures to vent to reduce shock cord stress
B. The hole allows easy verification that a parachute is installed
C. The hole is used to give air pressure readings for on board altimeters prematurely separating the model
D. The hole vents internal air pressure as the rocket gains altitude to prevent internal air pressure from prematurely separating the model

 

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 C26
Why should composite motors be ignited first in a mixed composite and black powder cluster?
A. The exhaust products from black powder motors prevent composite motor ignition
B. Composite rocket motors are more powerful than black powder motors
C. Composite motors are more difficult and take longer to ignite
D. Composite motors are more likely to "cato" than black powder motors

 

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

 

Question C29
Petroleum based lubricants should not be used with the oxygen or nitrous oxide systems used in hybrids. Why?
A. There is a risk of spontaneous ignition or explosion
B. They lose their lubricating properties when exposed to oxygen or nitrous oxide
C. They thicken 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 C33
Which of the following individuals has the final authority in permitting a high power rocket to fly?
A. The range safety officer (RSO)
B. The rocket owner
C. The check-in officer
D. The launch control officer (LCO)

 

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. 50 feet
B. 30 feet
C. 75 feet
D. 10 feet

 

Question 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. 30 feet
B. 10 feet
C. 50 feet
D. 75 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. A lightweight material used in nose cones on supersonic rockets
D. An ingredient used in some rocket motors that causes them to eject sparks in the exhaust

 

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

 

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. This field can only be used in calm winds for flights to the waiver altitude
D. You are limited only by the HPR maximum wind of 20 miles per hour

 

Question C55
What is a common safety practice to follow just before hooking up the igniter leads to a rocket?
A. Check the skies to ensure no aircraft are in the area
B. Run an additional simulation to ensure the rocket and motor are a safe combination
C. Touch the igniter clips together to test for sparks in case the launch system is still accidentally energized
D. Stand next to the rocket for a photograph

 

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 D8
As a rule of thumb, how far should the center of pressure be from the center of gravity?
A. The center of pressure should be 1.0 body tube diameters ahead of the fin leading edge; the center of gravity does not matter
B. The center of pressure should be at least 1.0 body tube diameters ahead of the center of gravity
C. The center of pressure should be at least 1.0 body tube diameters behind the center of gravity
D. The center of pressure should be at the same location as the center of gravity

 

Question D9
The definition of Positive Stability in regards to a rocket is:
A. Where the center of gravity (CG) is located ahead (forward) of the center of pressure (CP)
B. Where the center of gravity (CG) and the center of pressure (CP) lie at the same locations
C. Where the center of gravity (CG) is located behind (aft) of the center of pressure (CP)
D. None of the above

 

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