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NARTCERT Model Rocket Quiz

— 21 Oct, 2022

Welcome to your NARTCERT Model Rocket Quiz

To pass, 70% of the questions must be answered correctly, or 14 out of 20.

Name

The only materials allowed in the building of your rocket’s nose, body, and fins are:

A. Paper and Wood

B. Plastic and Balsa

C. Any lightweight, non-metallic material

D. Penolic, aluminum, titanium

Are home-made rocket motors permissible per the NAR Model Rocket Safety Code?

A. Yes

B. No

C. The NAR safety code does not cover this topic

D. Yes, if you are certified by the NAR and do not sell them to others

When is it permissible to use a fuse and a match to ignite a rocket motor?

A. If an electrical controller is otherwise unavailable

B. When the fuse is at least 12-inches in length

C. Never

D. If a NAR adult member is supervising

What is the thrust to weight ratio?

A. The ratio of the motor thrust to the specific impulse

B. The ratio of the motor thrust to the motor weight

C. The ratio of the motor thrust to the entire rocket weight

D. The ratio of the motor thrust to the propellant weight

For “C” sized rocket motors, what is the closest you can be to the launch pad when launching the rocket?

A. 6 feet

B. 15 feet

C. 30 feet

D. The safety code only states a general “safe distance”

Prior to launch from the pad, my rocket will never be pointed more than ______ degrees from vertical (up and down), and will have a blast deflector to prevent exhaust from striking the ground.

A. 30

B. 45

C. 90

D. 180

The NAR Safety Code allows for launching into clouds _________

A. as long as rockets are tracked and a landing spot can be determined by calculation

B. under no circumstances

C. because model rockets are built primary from lightweight, non-metallic parts and would disintegrate upon impacting an aircraft, thus presents no real threat

D. because it is a pilot’s responsibility to be aware of hazards

Per the NAR Safety Code, my launch site ____________

A. can be any flat location

B. must be outdoors and have winds 20-miles per hour or less

C. must be free of safety hazards, such as broken glass

D. Both B and C

In the event of a misfire how long should you wait before approaching the launch pad?

A. 5 minutes

B. 15 seconds

C. 60 seconds

D. As soon as signs of smoke are gone

Your rocket lands on a power line. Which of the following is true?

A. You can retrieve it if the power line is on a wooden (not metal) pole

B. You must leave it alone and you must call the power company

C. You can retrieve it if you have a non-conductive tool, such as a “hot-stick“

D. You can retrieve it if part of it is already on the ground

Which of the following is not a required feature of a rocket motor ignition system?

A. A removable safety interlock device is in series with the launch switch

B. The system is electrically operated

C. The launching switch will return to the “off“ position when released

D. An audible or visual indicator shows continuity through the rocket motor igniter

For a rocket to be stable which of the following statements is true?

A. The center of pressure (CP) must be behind the center of gravity (CG)

B. The center of pressure (CP) must be in front of the center of gravity (CG)

C. The rocket must have fins

D. The length of the body tube must be at least 5 times the model diameter

An unstable rocket can be made stable by:

A. Adding sufficient weight to the nosecone

B. Removing sufficient weight from the nosecone

C. Moving the fins sufficiently forward towards the nosecone

D. Making the rocket sufficiently shorter

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 the same location as the center of gravity

B. The center of pressure should be at least 1.0 body tube diameters behind the center of gravity

C. The center of pressure should be at least 1.0 body tube diameters in front of the center of gravity

D. The center of pressure should be 1.0 body tube diameters ahead of the fin leading edge; the center of gravity does not matter

What does the “B“ in the motor designation B6-4 stand for?

A. It is the first letter in the manufacturer’s name

B. It indicates the total power range or impulse range of the rocket motor

C. It indicates the total thrust of the rocket motor

D. It indicates that the motor uses black powder as a propellant

What does the “4“ in the motor designation B6-4 stand for?

A. It is the rocket motor burn 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 ejection charge delay time

The Space Age is considered to have started on October 4, 1957 because of

A. Homer Hickam’s book October Sky

B. The first successful launch of the V-2 rocket in Germany

C. The launch of the first American astronaut

D. The launch of Sputnik, the first earth orbiting satellite by Russia

The founding fathers of modern rocketry are

A. Tsiokovsky, Goddard, Oberth and von Braun

B. Wan Hu, Goddard, Oberth and von Braun

C. Huegele, Bundick, Serradet and von Barber

D. Carlisle, Stine, Hickam and Estes

Model rocketry was created by Harry Stine in 1957 primarily because

A. Russia had just launched Sputnik and the U.S. needed to catch up in space

B. Students were injuring themselves from making homemade motors

C. Stine was an aeronautical engineer with a cool idea

D. Rockets were new and kids were tired of model planes, boats and trains

Hot gas thrusting out the back of a rocket and propelling it forward is an example of

A. Newton’s First law of motion

B. Newton’s Second law of motion

C. Newton’s Third law of motion

D. Newton’s Law of Gravitation

Time's up

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