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 125
B. Part 95
C. Part 101
D. Part 97

 

Question A6
What is the maximum total impulse permitted in a high power rocket per NFPA 1127?
A. 40,960 Newton-seconds
B. There is no impulse limit provided the altitude requirements listed in the FAA Certificate of Waiver or Authorization (COA) are not exceeded
C. 81,920 Newton-seconds
D. 20,480 Newton-seconds

 

Question A8
What is the minimum age for user certification? [Note: Excludes NAR Jr. HPR program]
A. 25 years old
B. 21 years old
C. 16 years old
D. 18 years old

 

Question A9
Which of the following characteristics does NOT meet the definition of a High Power Rocket Motor?
A. Average thrust greater than 80 Newtons
B. Total impulse is more than 160 Newton-seconds
C. The motor uses a "composite" propellant
D. Propellant weight greater than 125 grams

 

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 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 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 A22
According to NFPA 1127, the definition of a High Power Rocket is a rocket vehicle that:
A. Is propelled by one or more High Power Rocket motors
B. Is propelled by a combination of model rocket motors having an installed total impulse of more than 320 Newton-seconds or a combination of model rocket motors having more than a total of 125 grams (4.4 ounces) of propellant weight
C. Weighs more than 1500 grams (53 ounces or 3.3 pounds) with motor(s) installed
D. All of the above

 

Question B3
What does the "5" in the motor designation H100-5 stand for?
A. It is the ejection charge delay 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 rocket motor burn time

 

Question B4
What are the units of measurement for the "100" in the motor designation H100-5?
A. Newtons
B. Newtons per second
C. feet per second
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. 3
B. 2
C. 4
D. 1

 

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. 750 feet
B. 320 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. 1800 feet
B. 18,000 feet
C. 4500 feet
D. 9000 feet

 

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. 1250 feet
B. 4000 feet
C. 1500 feet
D. 500 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 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. C) Yes, but the house has to be empty
D. D) No

 

Question C13
What is the minimum safe distance from a high power rocket containing two (2) "K" motors?
A. 100 feet
B. 500 feet
C. 300 feet
D. 50 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 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 vents internal air pressure as the rocket gains altitude to prevent internal air pressure from prematurely separating the model
C. The hole is used to give air pressure readings for on board altimeters prematurely separating the model
D. The hole allows easy verification that a parachute is installed

 

Question 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 rocket motors are more powerful than black powder motors
C. Composite motors are more likely to "cato" than black powder motors
D. The exhaust products from black powder motors prevent composite motor ignition

 

Question 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

 

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. The lubricant can promote corrosion of the metal components in the presence oxygen or nitrous oxide
D. There is a risk of spontaneous ignition or explosion

 

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

 

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

 

Question 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

 

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 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. 50 feet
B. 75 feet
C. 150 feet
D. 30 feet

 

Question 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. A lightweight material used in nose cones on supersonic rockets
D. An effective cleaning tool for high power rocket motor casings

 

Question C45
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

 

Question C47
What equipment is required at launch sites?
A. Fire suppression devices, First aid kits, and a way of communicating with everyone on the launch site
B. Fire suppression devices and First aid kits
C. First aid kits
D. Fire Suppression devices such as fire extinguishers

 

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 C57
Twisted wire pairs in rocket wiring are considered good practice because:
A. It resists electromagnetic interference from internal and external sources
B. It improves the routing of wire bundles
C. It reduces strain on solder joints
D. It reduces resistance in wire bundles

 

Question C60
Which sequence below provides the highest level of range safety when launching a rocket utilizing an onboard electronically actuated recovery system?
A. Arm recovery system electronics, install igniter, touch igniter clips together, connect clips to igniter
B. Install igniter, touch igniter clips together, connect clips to igniter, arm recovery system electronics
C. Install igniter, arm recovery system electronics, touch igniter clips together, connect clips to igniter
D. None of the above

 

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

 

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 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. 1 furlong per fortnight
D. c