NAR HPR Level 2 Certification Practice Exam

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Question A1
Which of the following National Fire Protection Association standards provides a code for high power rocketry?
A. NFPA 1124
B. NFPA 1122
C. NFPA 1127
D. NFPA 1125

 

Question A5
What is the maximum total impulse allowable for a rocket which does not require an FAA waiver?
A. There is no impulse limit
B. 160 Newton-seconds
C. 80 Newton-seconds
D. 320 Newton-seconds

 

Question A6
What is the maximum launch weight allowable for a rocket when complying with the FAR 101 regulations for no waiver required?
A. 4.4 ounces (125 grams)
B. 1 pound (453 grams)
C. 3.3 pounds (1500 grams)
D. 4 ounces (113 grams)

 

Question A7
Which of the following is a requirement for high power certification [Note: Excludes NAR Jr. HPR program]:
A. No felony convictions
B. A minimum of 18 years of age
C. The ability to understand written English instructions
D. A citizen of the United States of America

 

Question A8
What is the maximum total impulse permitted in a high power rocket per NFPA 1127?
A. There is no limit provided the FAA altitude waiver requirements are not exceeded
B. 20,480 Newton-seconds
C. 40,960 Newton-seconds
D. 81,920 Newton-seconds

 

Question A15
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, or gaseous) than the oxidizer
C. The oxidizer component is nitrous oxide
D. Both "A" and "C" above.

 

Question A16
Per the ATF-Explosives Law and Regulation (Orange Book) what kind of explosive material is black powder?
A. Low Explosive
B. Blasting Agent
C. High Explosive
D. Non-explosive

 

Question A19
A certified individual wants to purchase a "L" motor reloadable casing at a launch. Which of the following is true?
A. He must possess an Explosives User's Permit
B. He must use the reload kit on the same day as purchase
C. He does not require an Explosives User's Permit
D. He must pay in advance for the motor purchase

 

Question A20
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 A21
What does FAA FAR 101.29 require you to provide specifications on in filing 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, including any airborne platform(s)
D. Description of recovery system
E. Highest altitude, above ground level, expected to be reached,
F. Launch site latitude, longitude, and elevation
G. Any additional safety procedures that will be followed
H. All the above

 

Question B3
According to NFPA, in which of the following locations can a Type 4 magazine be permitted, assuming the authority having jurisdiction and the BATF approve?
A. Anywhere inside the house at least 10 feet away from flame producing appliances (stove, water heater, etc.)
B. In the attached garage of a single family residence
C. In the bedroom closet for a non-smoker resident
D. In the utility or laundry room of a multi-family residence

 

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

 

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. 1500 feet
C. 4000 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. 1500 feet
B. 3000 feet
C. You cannot launch unless the house is empty
D. 750 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. C) Yes, but the house has to be empty
B. D) No
C. B) Yes, but the pads have to be the minimum personnel distance from the edge of the field.
D. A) Yes

 

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

 

Question C22
Which of the following adhesives is the best choice for motor mount construction using phenolic motor tubes?
A. Aliphatic resin based glues
B. Cyanoacrylate glues (super glue)
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 vents internal air pressure as the rocket gains altitude to prevent internal air pressure from
D. The hole is used to give air pressure readings for on board altimeters 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. It does not matter which motors are ignited first
B. Black powder rocket motors should be ignited first
C. Composite rocket motors should be ignited first
D. Clusters should never mix composite and 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 additional current 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 higher voltage to ignite the additional igniters
D. The launch control must use a car battery as a power source

 

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 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 check-in officer
C. The rocket owner
D. The launch control officer (LCO)

 

Question 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.

 

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 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, and flying on its own, under power
C. The motor flying through the rocket, destroying it
D. All of the above

 

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

 

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. First aid kits
B. Fire suppression devices, First aid kits, and a way of communicating with everyone on the launch site
C. Fire suppression devices and First aid kits
D. Fire Suppression devices such as fire extinguishers

 

Question C49
Your high-power rocket lands in a power line. Which of the following is true?
A. You must leave it alone and you must call the power company
B. You can retrieve it if you have a non-conductive tool, such as a "hot-stick"
C. You can retrieve it if the power line is on a wooden (not metal) pole
D. You can retrieve it if part of it is already on the ground

 

Question C52
Which of the following is not a required feature of a rocket motor ignition system?
A. The system is electrically operated
B. An audible or visual indicator shows continuity through the rocket motor igniter
C. A removable interlock device is in series with the launch switch
D. The launching switch will return to the "off" position when released

 

Question 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, or stability
C. Both "A" and "B" above
D. None of the above

 

Question D1
For a rocket to be stable which of the following statements is true?
A. The center of pressure (CP) must be in front of the center of gravity (CG)
B. The length of the body tube must be at least 5 times the model diameter
C. The rocket must have fins
D. The center of pressure (CP) must be behind the center of gravity (CG)

 

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 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 at least 1.0 body tube diameters ahead of the center of gravity
B. The center of pressure should be 1.0 body tube diameters ahead of the fin leading edge; the center of gravity does not matter
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 E1
What does the "H" in the motor designation H100-5 stand for?
A. It indicates the total thrust of the rocket motor
B. It indicates the total power range or impulse range of the rocket motor
C. It is the first letter in the manufacturer's name
D. It indicates that the motor uses black powder as a propellant

 

Question E4
What are the units of measurement for the "100" in the motor designation H100-5?
A. Newton-seconds
B. feet per second
C. Newtons per second
D. Newtons

 

Question E7
You have an H64-8 rocket motor which has been certified to have a total impulse of 320.00 Newton seconds. What is the approximate burn time for this motor?
A. 10 seconds
B. 8 seconds
C. 3 seconds
D. 5 seconds

 

Question F1
What is the airspeed velocity of an unladen swallow?
A. African or European?
B. Mach 1
C. c
D. 1 furlong per fortnight