Intro to flight Aerospace 1

Question 1

Aero

Answer 1

Pertaining to air

Question 2

Aerodynamics

Answer 2

Relating to the forces of air in motion

Question 3

Aeronautics

Answer 3

The science of flight within the atmosphere

Question 4

Aerospace

Answer 4

A combination of aeronautics and space

Question 5

Air

Answer 5

A mixture of gases that contains approximately 78% nitrogen, 21% oxygen, and 1% other gases

Question 6

Aircraft

Answer 6

Any machine that is capable of flying through the air; included are ultralights, airplanes, gliders, balloons, helicopters, hang gliders, and parasails.

Question 7

Airfoil

Answer 7

A component, such as a wing, that is specifically designed to produce lift, thrust, or directional stability.

Question 8

Aviation

Answer 8

The art, science, and technology of flight within the atmosphere.

Question 9

Camber

Answer 9

The curved part of an airfoil, from its leading to trailing edge

Question 10

Chord

Answer 10

A line drawn through an airfoil, from its leading to trailing edge.

Question 11

Downwash

Answer 11

The downward movement of air behind a wing in flight.

Question 12

Dynamic

Answer 12

Forces in motion.

Question 13

Relative wind

Answer 13

The flow of air that moves opposite the flight path of an airplane.

Question 14

Upwash

Answer 14

The upward movement of air ahead of the wing in flight.

Question 15

Vortex

Answer 15

A spinning column of air that is created behind the wingtip as a result of air moving from an area of high pressure on the bottom to an area of low pressure on top.

Question 16

Bernoulli’s principle

Answer 16

Discovered by the Dutch scientist Daniel Bernoulli;
When a fluid’s velocity (V1)—in this case, air—is flowing at low velocity, pressure (P1) is high. When air flows through a restriction, the velocity (V2) accelerates and pressure (P2) drops.

Question 17

Newtons third law

Answer 17

Discovered by the Englishman Sir Isaac Newton; For every action, there is an equal and opposite reaction

Question 18

Glide ratio

Answer 18

A mathematical relationship between the distance an aircraft will glide forward to the altitude loss. (If an aircraft has a glide ratio of 20 to 1, and it is one mile above the earth, it should glide 20 miles before landing.)

Question 19

Lapse rate

Answer 19

The average rate at which temperature decreases with an increase in altitude. (The average lapse rate is 3.5°F per 1,000 ft. increase in altitude.)

Question 20

Soaring

Answer 20

The art of staying aloft by exploiting the energy of the atmosphere.

Question 21

Stability

Answer 21

The atmosphere’s resistance to vertical motion.

Question 22

Thermal

Answer 22

A column of air that moves upward

Question 23

Towplane

Answer 23

Usually a single-engine airplane that will pull a glider from the ground to an altitude where it can be released.

Question 24

Wave

Answer 24

A strong up-and-down waving action that starts as air moves across mountain ranges. (Sailplane pilots can use the motion of this wave to gain altitude.)

Question 25

Crown

Answer 25

The top of the hot-air balloon’s envelope

Question 26

Envelope

Answer 26

The main body of the balloon, usually made of nylon, that is filled with lighter than air gas.

Question 27

Gondola

Answer 27

The wicker basket that hangs below the envelope. It’s used to carry passengers and propane tanks.

Question 28

Gore

Answer 28

One of several vertical panels that make up the envelope.

Question 29

Montgolfier

Answer 29

The last name of the two French brothers who created the first successful manned hot-air balloon in 1783.

Question 30

Parachute panel

Answer 30

A panel in the top of the balloon’s envelope that allows it to be deflated. (When a larger area of deflation is needed, some balloons are equipped with a rip panel.)

Question 31

Variometer

Answer 31

An instrument that determines the rate of climb or descent. It’s sometimes called a vertical velocity indicator.