NAR HPR Level 2 Certification Practice Exam

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Question A7
What is the maximum allowable weight for a High Power Rocket permitted per NFPA 1127?
A. 100 pounds
B. 3069 pounds
C. 400 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 A13
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 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 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 B1
What does the "H" in the motor designation H100-5 stand for?
A. It indicates that the motor uses black powder as a propellant
B. It indicates the total thrust of the rocket motor
C. It indicates the total power range or impulse range of the rocket motor
D. It is the first letter in the manufacturer's name

 

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. Newton-seconds
C. Newtons
D. feet per second

 

Question C4
You plan to break the altitude record for H motors with a flight to 10,900 feet. You have a field that is 6000 feet by 6000 feet. You have an FAA waiver up to 12,000 feet. Assuming no public highways or occupied buildings are in the area, what is the minimum distance between the launch site boundary and the launcher for an H-powered altitude record attempt?
A. 1500 feet
B. The launcher may be located anywhere on the launch site to compensate for wind.
C. 100 feet
D. 3000 feet

 

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. 500 feet
B. 4000 feet
C. 1500 feet
D. 1250 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. 1/4, 1500 feet
C. 1/2, 2500 feet
D. 1/2, 1500 feet

 

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

 

Question C15
In the event of a misfire how long should you wait before approaching the launch pad?
A. 5 minutes
B. As soon as signs of smoke are gone
C. 60 seconds
D. 15 seconds

 

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

 

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. "Though the wall" mounting
C. Tube surface mounting
D. "Wedge" mount

 

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. "Hot melt" adhesives
D. Slow-curing epoxy adhesives

 

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

 

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

 

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. Rocket motor malfunctions
D. Rockets that are structurally unsound

 

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

 

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

 

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 C52
According to NFPA 1127, 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 C55
What is a common safety practice to follow just before hooking up the igniter leads to a rocket?
A. Run an additional simulation to ensure the rocket and motor are a safe combination
B. Check the skies to ensure no aircraft are in the area
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 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 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. Using a shorter nosecone
C. Increasing the size of the aft fins
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 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 the same location as the center of gravity
C. The center of pressure should be at least 1.0 body tube diameters ahead of the center of gravity
D. The center of pressure should be at least 1.0 body tube diameters behind the center of gravity

 

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