NAR HPR Level 2 Certification Practice Exam

For each question below, click on the circle next to the correct answer. When you have finished the test, Click the 'Score My Exam' button at the bottom of the page. Good luck!!

 
 

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 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. A minimum of 18 years of age
D. No felony convictions

 

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

 

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 A14
You're attending a launch that has a thin (but see-through) cloud layer at ~3,000 feet and clear blue skies above it. Is it okay to "punch" through this cloud layer with a High Power Rocket if there's a Certificate of Waiver or Authorization (COA) granting Class 2 flights up to 6,000 feet?
A. Yes, since there is an active COA, High Power Rockets can be flown up to the 6,000 foot altitude limit
B. No, flights into any clouds are prohibited unless specifically waived by the FAA
C. Yes, as long as the cloud layer can barely be seen through and the RSO allows it
D. Both "A" and "C" 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 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 B1
What does the "H" in the motor designation H100-5 stand for?
A. It indicates the total power range or impulse range of the rocket motor
B. It is the first letter in the manufacturer's name
C. It indicates the total thrust of the rocket motor
D. It indicates that the motor uses black powder as a propellant

 

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 peak thrust in pounds of the rocket motor
C. It is the rocket motor burn time in seconds
D. It is the average thrust in Newtons of the rocket motor

 

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

 

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. 15 miles per hour
B. 20 miles per hour
C. 25 miles per hour
D. 30 miles per hour

 

Question C6
The FAA has granted a waiver for high power rocket flight to 2500 feet for your 2xN clusterpowered rocket. What are the minimum launch site dimensions?
A. 500 feet
B. 1250 feet
C. 4000 feet
D. 1500 feet

 

Question C7
Except as provided in NFPA 1127 Paragraph 4.14.2(3), in no case shall the minimum launch site dimension be less than __________ the estimated altitude of the high power rocket or __________.
A. 1/4, 2500 feet
B. 1/2, 2500 feet
C. 1/2, 1500 feet
D. 1/4, 1500 feet

 

Question 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, can you conduct a high power launch from this farm?
A. B) Yes, but the pads have to be the minimum personnel distance from the edge of the field.
B. A) Yes
C. D) No
D. C) Yes, but the house has to be empty

 

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

 

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

 

Question C20
Which of the following adhesives should not be used on rubber (or elastic) shock cord components?
A. Slow-curing epoxy adhesives
B. White "Elmer's" glue
C. Aliphatic resin-based (yellow) glues
D. Cyanoacrylate glues (super glue)

 

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

 

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

 

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

 

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. 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

 

Question C30
Which of the following safety hazards may be associated with hybrid rocket motors?
A. Corrosive materials
B. High pressure gas
C. Low temperatures (frostbite)
D. High pressure gas, low temperatures (frostbite)

 

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. The hole allows easy verification that the battery is installed
D. This hole allows excessive ejection charge pressures to vent

 

Question C33
Which of the following individuals has the final authority in permitting a high power rocket to fly?
A. The check-in officer
B. The rocket owner
C. The range safety officer (RSO)
D. The launch control officer (LCO)

 

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

 

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

 

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

 

Question C48
The Range Safety Officer (RSO) is concerned about your High Power Rocket's stability. Which of the following can be applied to determine the model's stability?
A. Fly a sub-scale, model rocket version of the actual model
B. Perform manual calculations to determine the rocket's Center of Pressure (CP) location and verify the prelaunch Center of Gravity (CG) location
C. Provide simulation data showing the rocket's Center of Pressure (CP) location and prelaunch Center of Gravity (CG) locations
D. All of the above

 

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

 

Question C56
An electronically actuated recovery system, as either a primary or backup deployment method, is required if the installed total impulse exceeds:
A. 1280 N-sec
B. 2560 N-sec
C. 5120 N-sec
D. 10240 N-sec

 

Question C58
Black powder charges for recovery systems can be unintentionally fired by:
A. Electrostatic discharge (static electricity)
B. Electromagnetic fields, e.g. nearby radios
C. Control electronics malfunction
D. All of the above

 

Question 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

 

Question D5
An unstable rocket can usually be made more stable by:
A. Increasing the rocket diameter
B. Using a shorter nosecone
C. Increasing the size of the aft fins
D. Using a larger, heavier rocket motor

 

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