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Object at rest stays at rest unless acted upon by an outside force

The rate of change of velocity over time

Rate of movement or motion in a given amount of time

The quickness or speed of an object in a given time or direction

Inertia

an object at rest will stay at rest, or an object in motion will continue in motion at the same speed and in the same direction, until acted upon by an outside force

Force

An object moving w/uniform speed is acted upon by an external force, the change of motion, or acceleration, will be directly proportional to the amount of force and inversely proportional to the mass of the object being moved

Action and Reaction

For every action there is an equal and opposite reaction

The principle states that when a fluid flowing flowing through a tube reaches a constriction is increased and its pressure decreased

minimize loss and damage from destructive weather

Winds 33 Knots or less

winds 34-47 knots

winds 48 knots or greater

3 stages of intenstity

• 1.tropical depression- winds 33 knots or higher
• 2.tropical storm-winds 34-63 knots
• 3.hurricane/typhoon-winds 64 knots or greater

Thunderstorm warning- within 3 miles of airfield, or in immediate area

Severe-wind gusts 50 knots or greater and/or hail

Tornado- tornados detected by RADAR

Force that acts in an upward direction to support aircraft in air

Must be greater than or equal to weight if flight is to be sustained

Force of gravity acting downward on the aircraft and everything on aircraft

Force that tends to hold aircraft back

Drag resist motion

force developed by aircraft engine

Must be greater than or equal to the effects of drag to fly

imaginary referance line running down the center of the aircraft between nose and tail

roll

imaginary reference line running parallel to the wings about which pitch occurs

imaginary reference line running from top to bottom of aircraft. yaw

• pitch- up and down
• yaw-right and left
• roll- wing tips, one up the other down

• ailerons control longitudinal axis
• elevators control lateral axis
• rudder controls vertical axis

• collective stick controls up and down
• cyclic stick tilits rotor blades forward aft or sideways
• lateral control(foot pedals) controll blades on tail rotor

reduces landing speed

use to decrease wing life

hinged or moveable control surfaces used for reducing the speed of aircraft

Intended primarily for use during operations from carriers; catapult takeoffs and arrested landings

provides stability of the aircraft about it lateral axis

• directional stability
• base to which rudder is attached

counteracts the torque action of the main rotor by producing thrust in opposite direction

angle at which a body, such as an airfoil or fuselage, meets a flow of air

method used allowing a helicopter to land saftley from altitude w/out using engine power, useing reverse airflow through rotor system to reduce rate of decent

• reservoir- holds fluid
• pump- flow
• tubing- transmits fluid
• selector valve- direct flow
• actuating unit-convert fluid presure