Flight technology

5. shear-variation in wind velocity occurring along a direction at right angles to the wind’s direction and tending to exert a turning force
8. hinged flap on the horizontal stabilizer of an aircraft, typically one of a pair, used to control the motion of the aircraft about its lateral axis
10. angular distance of a place north or south of the earth’s equator
11. angular distance of a place east or west of the meridian
12. instrument used in an aircraft to inform the pilot of the aircraft’s heading
14. part of a machine that bears friction, especially between a rotating part and its housing
15. vertical airfoil pivoted from the horizontal stabilizer of an aircraft, for controlling movement around the vertical axis

1. a structure with curved surfaces designed to give the most favorable ratio of lift to drag in flight
2. state in which opposing forces or influences are balanced
3. force which moves an aircraft through the air
4. force that acts at a right angle to the direction of motion through the air. It is created by differences in air pressure
6. force that acts opposite to the direction of motion
7. main body of an aircraft.
9. the height of an object or point in relation to sea level or ground level
13. a hinged surface in the trailing edge of an airplane wing, used to control lateral balance