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Certification Practice test

Click on the correct answer



1 Which of the following National Fire Protection Association standards provides a code for high power rocketry?
NFPA 1122
NFPA 1127
NFPA 1123
NFPA 1124
2 What part of the Federal Aviation Administration's Federal Aviation regulations govern rocket activity?
Part 95
Part 97
Part 101
Part 125
3 What is the maximum launch weight allowable for a rocket which does not require FAA notification or waiver?
4 ounces (113 grams)
4.4 ounces (125 grams)
1 pound (453 grams)
3.3 pounds (1500 grams)
4 What is the maximum propellant weight allowable for a rocket which does not require FAA notification or waiver?
4 ounces (113 grams)
4.4 ounces (125 grams)
1 pound (453 grams)
3.3 pounds (1500 grams)
5 What is the maximum total impulse allowable for a rocket which does not require FAA notification or waiver?
80 Newton seconds
120 Newton seconds
200 Newton seconds
There is no impulse limit.
6 What is the maximum launch weight allowable for a rocket when complying with the FAA notification requirements?
4 ounces (113 grams)
4.4 ounces (125 grams)
1 pound (453 grams)
3.3 pounds (1500 grams)
7 What is the maximum propellant weight allowable for a rocket when complying with the FAA notification requirements?
4 ounces (113 grams)
4.4 ounces (125 grams)
1 pound (453 grams)
3.3 pounds (1500 grams)
8 High-power rocket motors, motor reloading kits, and pyrotechnic modules shall be stored at least how far away from smoking, open flames, and other sources of heat?
10 feet
25 feet
50 feet
75 feet
9 Which of the following is a requirement for high power certification?
The ability to understand written English instructions
A minimum of 18 years of age
United States citizenship
No felony convictions
10 What is the maximum total impulse permitted in a high power rocket per NFPA 1127?
81920 Newton seconds
40960 Newton seconds
20480 Newton seconds
There is no limit provided the FAA altitude waiver requirements are not exceeded.
11 What is the maximum allowable weight for a high power rocket permitted per NFPA 1127
30 pounds
60 pounds
120 pounds
There is no limit provided the rocket weighs less than the rocket motor manufacturer's recommended liftoff weight for the rocket motor(s) used for flight.
12 What is the minimum age for user certification?
16 years old
18 years old
21 years old
25 years old
13 Which of the following is not a required feature of a rocket motor ignition system?
A removable interlock device is in series with the launch switch.
The system is electrically operated.
The launching switch will return to the "off" position when released.
An audible or visual indicator shows continuity through the rocket motor ignitor.
14 Which of the following statements are true concerning the definition of a High Power Rocket Motor?
Total impulse is more than 160 Newton seconds
The motor uses a "composite" propellant
Both A and B above
The motor must use either fiberglass or metal case materials
15 Which of the following is (are) true of a complex high power rocket per NFPA 1127?
The rocket is multistaged or propelled by a cluster of rocket motors
The rocket contains electrical or electronic devices intended for control of the rockets functions, e.g. staging, recovery initiation
The rocket uses other than parachute or streamer recovery, e.g. helicopter or glide recovery
Both "A" and "B" above
16 A launch site is defined as containing areas for which of the following activities?
Launching
Recovery
Parking
All of the above
17 A person shall fly a high power rocket only in compliance with:
NFPA 1127
Federal Aviation Administration Regulations, Part 101
State, and local laws, rules, regulations, statutes, and ordinances
All of the above
18 Which of the following statements is always true concerning the definition of a hybrid rocket motor?
The fuel component is composed of either paper or plastic.
The fuel is in a different physical state (solid, liquid, or gaseous) than the oxidizer.
The oxidizer component is nitrous oxide.
Both "A" and "C" above"
19 Per ATF Explosives Law and Regulation (Orange Book) what kind of explosive material is Thermalite fuse?
High Explosive
Low Explosive
Blasting Agent
Non-explosive Non-explosive Non-explosive Non-explosive
20 "LEUP" stands for:
Legal Entity User Permit
Liability Evaluation/Uniform Process
Low Explosive User Permit
Low Explosive Uniform Process
21 The minimum age for an explosive permit application is:
16
18
21
25
22 Which of the following statements are true concerning the definition of a High Power Rocket Motor?
Total impulse is less than 81,920 Newton-seconds
Total impulse is more than 160 Newton-seconds
Both A and B
The motor must use either fiberglass or metal case materials
23 Which of the following is prohibited for participants prepping or launching high power rockets?
Consumption of alcohol
Use of medication that could affect judgement, movement, or stability
Both A and B
None of the above
24 Which of the following is prohibited for spectators in high power rocket prepping areas?
Consumption of alcohol
Use of medication that could affect judgement, movement, or stability
Both A and B
None of the above
25 A certified individual wants to purchase an L motor reload at a launch in a state other than his residence. Which of the following is true?
He must possess a Low Explosives User's Permit
He does not require a Low Explosives Users' Permit
He must pay in advance for the motor purchase.
He must use the reload kit on the same day as purchase.
26 A certified individual wants to purchase an L motor reloadable casing at a launch in a state other than his residence. Which of the following is true?
He must possess a Low Explosives User's Permit
He does not require a Low Explosives Users' Permit
He must pay in advance for the motor purchase.
He must use the reload kit on the same day as purchase.
27 What is the maximum net propellant weight which may be stored in a indoor Type 3 or Type 4 magazine?
10 pounds
25 pounds
50 pounds
100 pounds
28 Which type of storage magazine is refered to as a "day-box"?
Type 1
Type 2
Type 3
Type 4
29 Which of the following are requirements for Type 3 magazine construction?
Steel structure
Wood lined
Lockable
All of the above
30 Which of the following is not a requirement for an indoor magazine?
The magazine will be painted red.
The magazine will bear the words "EXPLOSIVES-KEEP FIRE AWAY".
The magazine will bear the words "EXPLOSIVES-50 POUND MAXIMUM"
The words "EXPLOSIVES-..." are printed in white letters at least three inches high.
31 In which of the following locations can a Type 3 magazine be properly located?
In the attached garage of a single family residence
In the utility or laundry room of a multi-family residence
In the bedroom closet for a non-smoker residence
Anywhere inside the house at least 10 feet away from flame producing appliances (stove, water heater, etc.)
32 In which of the following locations can a Type 3 or Type 4 magazine properly be located?
In the utility or laundry room of a multi-family residence
In the attached garage of a multi-family residence if the garage is surrounded on all sides by a one-hour fire-rated barrier
In the bedroom closet of a non-smoker resident
Anywhere inside the house at least 10 feet away from flame-producing appliances (stove, water heater, etc.)
33 In which of the following locations can a Type 3 or Type 4 magazine properly be located?
In the bedroom closet of a non-smoker resident
In the attached garage of a multi-family residence
In a detached garage substantially removed or segregated from any residence
Anywhere inside the house at least 10 feet away from flame-producing appliances (stove, water heater, etc.)
34 What is the maximum launch angle, measured from the vertical, for a high power rocket?
10 degrees
20 degrees
30 degrees
40 degrees
35 What is the maximum wind velocity allowable for launch operations?
20 miles per hour
25 miles per hour
15 miles per hour
30 miles per hour
36 The minimum launch site dimension for rockets having a maximum installed impulse of 320.00 Newton seconds is 1500 feet. What is the minimum distance between the launch site boundary and the launcher?
150 feet
375 feet
750 feet
The launcher may be located anywhere on the launch site to compensate for wind.
37 The minimum launch site dimension for rockets having a maximum installed impulse of 2560.00 Newton seconds is 5280 feet. Flights to 10500 feet are anticipated. What is the minimum distance between the launch site boundary and the launcher?
Approximately 660 feet
Approximately 1320 feet
Approximately 2600 feet
The launcher may be located anywhere on the launch site to compensate for wind.
38 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 are the minimum launch site dimensions?
1800 feet
4500 feet
9000 feet
18000 feet
39 The FAA has granted a waiver for high power rocket flight to 2500 feet for your event. What are the minimum launch site dimensions?
250 feet
500 feet
1250 feet
1500 feet
40 In no case shall the minimum launch site dimension be less than ______ the estimated altitude of the high power rocket or _______ .
1/4, 1500 feet
1/2, 1500 feet
1/4, 2500 feet
1/2, 2500 feet
41 Your launch site borders on an interstate freeway. What is the minimum distance allowable for location of a high power launch site from the interstate freeway?
750 feet
1500 feet
3000 feet
5280 feet (1 mile)
42 Your launch site's owner's house is located in the middle of your site. What is the minimum distance allowable for location of a high power launch site from the owner's house?
750 feet
1500 feet
3000 feet
The launch site shall contain no occupied buildings; you cannot launch unless the house is empty.
43 What is the minimum safe distance from a high power rocket containing a single "I" motor?
200 feet
100 feet
75 feet
50 feet
44 What is the minimum safe distance from a high power rocket containing two "H" motors?
200 feet
100 feet
75 feet
50 feet
45 What is the minimum safe distance from a high power rocket containing two "K" motors?
50 feet
100 feet
300 feet
500 feet
46 Which of the following ignitors may be ignited by the continuity test of some launch controllers?
Nichrome wire
Flashbulbs
Electric match
Both "b" and "c" above
47 In the event of a misfire, how long should you wait before approaching the launch pad?
15 seconds
60 seconds
5 minutes
No wait is required
48 Which of the following is most likely to cause catastrophic failure of a black powder rocket motor?
Temperature cycling
Electromagnetic fields
Vibration
High altitude
49 Ignitors for clustered rocket motors should be wired together in:
Series
Parallel
Short Circuit
Open Circuit
50 When should ignitors installed in rocket motors be checked for continuity?
Any time
Only in an enclosed shelter
Only on the launch pad when ready for launch
Ignitors should never be checked for continuity while installed in a rocket motor.
51 Which of the following is the preferred method for attaching fins to a high power rocket?
Tube surface mounting
"Wedge" mount
"Though the wall" mounting
All fin mounting methods are equally strong; it does not matter
52 Which of the following adhesives should not be used on rubber (or elastic) shock cord components?
Epoxy adhesives
Cyanoacrylate glues (super glue)
Aliphatic resin based glues
White "Elmer's" glue
53 Which of the following adhesives is most likely to be weakened under humid or wet weather conditions?
Epoxy adhesives
Cyanoacrylate glues (super glue)
Aliphatic resin based glues
White "Elmer's" glue
54 Which of the following adhesives is the best choice for engine mount construction in high power rockets?
Epoxy adhesives
Cyanoacrylate glues (super glue)
Aliphatic resin based glues
"Hot melt" adhesives
55 The centering rings provided with your high power kit are a loose fit around the motor tube. Which of the following adhesives is the best choice for a strong joint?
Epoxy adhesives
Cyanoacrylate glues (super glue)
Aliphatic resin based glues
"Hot melt" adhesives
56 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?
This hole allows excessive ejection charge pressures to vent to reduce shock cord stress.
The hole is used to give air pressure readings for on board altimeters.
The hole vents internal air pressure as the rocket gains altitude to prevent internal air pressure from prematurely separating the model.
The hole allows easy verification that a parachute is installed.
57 When clustering combinations of black powder and composite motors, which type of rocket motor should be ignited first?
Composite rocket motors should be ignited first
Black powder rocket motors should be ignited first
It does not matter which motors are ignited first
Clusters should never mix composite and black powder motors
58 Why should composite motors be ignited first in a mixed composite and black powder cluster?
Composite motors are more difficult and take longer to ignite.
Composite motors are more likely to "cato" than black powder motors
The exhaust products from black powder motors prevent composite motor ignition.
Composite rocket motors are more powerful than black powder motors
59 If individual igniters are used for igniting a clustered model's motors, which of the following statements is typically true?
The launch control must have an audible as well as visual indication of igniter continuity.
The launch control must provide additional current to ignite the additional igniters.
The launch control must provide higher voltage to ignite the additional igniters.
The launch control must use a car battery as a power source
60 What is (are) the advantages of using a "relay" type launch control?
It is cheaper than a non-relay launch control
The relay allows a better indication of igniter continuity
It can deliver more power to the rocket motor igniters
Both "B" and "C" above
61 Petroleum based lubricants should not be used with the oxygen or nitrous oxide systems used in hybrids. Why?
They thicken when exposed to oxygen or nitrous oxide.
They lose their lubricating properties when exposed to oxygen or nitrous oxide.
There is a risk of spontaneous ignition or explosion.
The lubricant can promote corrosion of the metal components in the presence oxygen or nitrous oxide.
62 Which of the following safety hazards may be associated with hybrid rocket motors?
High pressure gas, low temperatures (frostbite)
Low temperatures (frostbite)
Corrosive materials
High pressure gas
63 The Range Safety Officer (RSO) says that your model is unsafe to fly. Who has the authority to overturn this ruling?
The Launch Control Officer (LCO)
The individual who "checked in" the model
Three certified high power fliers who agree that the model is safe
The RSO's decision cannot be overturned
64 Parachute ejection systems that sense barometric presure for activation need an outside hole in their compartment to:
Allow excessive ejection charge pressures to vent
Allow readings of outside air pressures
Vent internal air pressure as the rocket gains altitude, to prevent internal air pressure from prematurely separating the model
Allow easy verification that the battery has been installed
65 Which of the following individuals has the final authority to permit a high power rocket to fly?
The Launch Control Officer (LCO)
The Range Safety Officer (RSO)
The check-in officer
The rocket owner
66 Which of the following individuals has the ultimate responsibility of ensuring that the rocket was built in a safe manner?
The Launch Control Officer (LCO)
The Range Safety Officer (RSO)
The rocket owner / builder
All of the above
67 Parachute ejection systems that sense barometric pressure can malfunction during supersonic flight because:
Aerodynamic heating changes the values of electronic components
The outside pressure distribution is not continuous around the model
Static discharge can "zap" sensitive electronic components
Both A and B
68 Your rocket returns from its flight with "zipper" damage (the shock cord tore through the body tube). What is the probable cause?
Parachute ejection occurred too soon after motor burnout.
Parachute ejection occurred too long after apogee.
Parachute ejection occurred at apogee
Both A and B
69 Your payload section, with its heavy payload, separated from your model immediately after motor burnout. What is the probable cause?
The center of pressure (CP) at burnout was behind the center of gravity (CG) for the model
The payload shoulder was too loose in the body tube
The rocket motor had a failure in its delay system
Both B and C
70 What distance around the launcher must be cleared of easy-to-burn materials before launching a J-powered rocket?
10 feet
30 feet
50 feet
75 feet
71 What distance around the launcher must be cleared of easy-to-burn materials before launching a model with cluster of two J engines?
10 feet
30 feet
50 feet
75 feet
72 For a sport rocket to be stable which of the following statements is true?
The center of pressure (CP) must be behind the center of gravity (CG).
The center of pressure (CP) must be in front of the center of gravity (CG).
The rocket must have fins.
The length of the body tube must be at least 5 times the model diameter.
73 An unstable rocket can be made stable by:
Adding weight to the nosecone
Removing weight from the nosecone
Moving the fins forward towards the nosecone
Making the rocket shorter
74 Rocket stability can be estimated by:
Center of pressure "Barrowman" equations
"Cardboard cutout" method
Determining the relative positions of the center of pressure and center of gravity
Stability cannot be estimated before a test flight.
75 A high power rocket's center of pressure can be estimated by:
The "Barrowman" method
Finding the point where the model balances
Center of pressure equations
Both "A" and "C" above
76 An unstable rocket can usually be made more stable by:
Using a shorter nosecone
Increasing the size of the aft fins
Using a larger, heavier rocket motor
Increasing the rocket diameter
77 During boost a rocket powered by a solid rocket motor tends to become:
Less stable in flight
More stable in flight
No change in stability
Unstable
78 Which of the following is true of an unstable rocket?
The center of pressure (CP) is behind the center of gravity (CG).
The center of pressure (CP) is in front of the center of gravity (CG).
The rocket has more than 6 fins.
The length of the body tube is less than 5 times the model diameter.
79 As a rule of thumb, how far should the center of pressure be from the center of gravity?
The center of pressure should be at the same location as the center of gravity.
The center of pressure should be at least 1.0 body tube diameters behind the center of gravity.
The center of pressure should be at least 1.0 body tube diameters ahead of the center of gravity
The center of pressure should be 1.0 body tube diameters ahead of the fin leading edge; the center of gravity does not matter.
80 What does the "H" in the motor designation H100-5 stand for?
It is the first letter of the manufacturer's name.
It indicates the total power range or impulse range of the rocket motor.
It indicates the total thrust of the rocket motor.
It indicates that the motor uses black powder as a propellent.
81 What does the "100" in the motor designation H100-5 stand for?
It is the peak thrust in pounds of the rocket motor.
It is the rocket motor burn time in seconds.
It is the average thrust in newtons of the rocket motor.
It is the manufacturer's retail price code.
82 What does the "5" in the motor designation H100-5 stand for?
It is the rocket motor burn time.
It is the peak thrust (in kilograms) of the rocket motor.
It is the average thrust of the rocket motor.
It is the ejection charge delay time.
83 What are the units of measurement for the "100" in the motor designation H100-5?
newtons per second
newtons
newton-seconds
feet per second
84 What is the maximum total impulse for a "J" rocket motor?
320.00 newton-seconds
640.00 newton-seconds
1280.00 Newton-seconds
2560.00 Newton-seconds
85 Assuming that each motor has the full allowable impulse, how many "H" motors have the same total impulse as a single "J" motor?
1
2
3
4
86 The Department of Transportation explosives classification "EXPLOSIVES B" indicates what type of hazard?
Mass detonating type explosive
Mass fire and hot gas production
Shrapnel or projectiles resulting from detonation
Limited fire, hot gas production
87 What classification in the United Nations (UN) system is similar to the Department of Transportation classification "EXPLOSIVES B"?
UN Division 1.1
UN Division 1.2
UN Division 1.3
UN Division 1.4
88 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?
3 sec
5 sec
7 sec
9 sec
89 The manufacturer's test data shows a total impulse of 680 Newton-seconds for your motor. What impulse class does your motor represent?
H
I
J
K
90 The manufacturer's test data shows an average thrust for your motor of 100 Newtons for six seconds. What impulse class does your motor represent?
H
I
J
K