NAR Level 2 Written Exam Study Guide & Question Pool

These flashcards cover key terminology and concepts relevant to the NAR Level 2 Written Exam for High Power Rocketry certification.

NFPA 1127

The National Fire Protection Association standard that provides a code for High Power Rocketry.

FAA Certificate of Waiver or Authorization (COA)

A permit required from the FAA to fly certain high power rockets.

Total Impulse

The total amount of thrust produced by a rocket motor during its burn time.

Center of Gravity (CG)

The point at which the mass of an object is balanced in all directions.

Center of Pressure (CP)

The point where the aerodynamic forces on a rocket are concentrated.

Stable Rocket

A rocket that has its center of pressure located behind its center of gravity.

Hybrid Rocket Motor

A type of rocket that uses a combination of solid and liquid propellants.

Rocket Stability

The ability of a rocket to maintain its flight path without undesirable changes in trajectory.

Launch Site Dimension

The minimum area required for safe high power rocket launches.

Twisted Wire Pairs

A wiring method that reduces electromagnetic interference by twisting two wires together.

Ejection Charge

An explosive charge used to deploy a rocket's recovery system.

Kinetic Energy

The energy that an object possesses due to its motion, calculated as 1/2 imes mass imes velocity^2.

Minimum Personnel Distance

The safe distance that spectators and participants must maintain from the launch pad during a rocket launch.

Launch Rail

A rigid support for launching rockets that reduces drag and enhances stability.

Temperature Cycling

The fluctuation of temperature that can cause failures in rocket motors.

Composite Propellant

A type of solid propellant that consists of a fuel and oxidizer mixed together.

Black Powder Motor

A type of rocket motor that uses black powder as its propellant.

Recovery System

The mechanism used to safely return the rocket to the ground after flight.

Rocket Motor Designation

The code used to specify the type and power of rocket motors.

Safety Code

A set of guidelines established to ensure safety during rocket launches.