AE 107 Spins

Question 1

aerodynamic point around which stall and yaw forces act to sustain spin rotation

Answer 1

spin axis

Question 2

Aerodynamic forces during a stall that result in movement around the pitch, roll, and yaw axes

Answer 2

poststall gyration

Question 3

higher energy (airspeed) at stall entry = ___ poststall gyration tendency

Answer 3

greater

Question 4

combination of roll and yaw that propagates itself and progressively gets worse due to asymmetrically stalled wings

Answer 4

autorotation

Question 5

The outside wing has a ___ AOA, which means more ___.

Answer 5

lower, more

Question 6

The inside wing has ___ AOA, which means ___ lift.

Answer 6

higher, less

Question 7

Outside wing has ___ AOA, which means ___ drag.

Answer 7

lower, less

Question 8

Inside wing has ___ AOA, which means ___ drag.

Answer 8

higher, more

Question 9

What are the characteristics of an erect spin?

Answer 9

entered from pos G stall and yaw, attitude at entry is not a factor, nose-down upright attitude and pos Gs

Question 10

What are the characteristics of an inverted spin?

Answer 10

entered from neg G stall and yaw, attitude at entry isn’t a factor, nose-down inverted attitude and neg Gs

Question 11

Lower pitch results in ___ rotation rate.

Answer 11

higher (conservation of angular momentum)

Question 12

Ailerons normally set to ___ for spin recovery.

Answer 12

neutral

Question 13

1) nose pitches up, lesser vert component of drag acting on tail 2) initial rotation rate slows due to change in angular momentum, then rotation rate increases due to a decrease in horiz drag component

Answer 13

pro-spin rudder

Question 14

1) nose pitches down, larger vert component of drag acting on tail 2) initial rotation rate increases due to change in angular momentum, then rotation rate decreases due to an increase in gorizontal drag component

Answer 14

anti-spin rudder

Question 15

___ ___ ___ maximizes vertical drag, nose pitches down, spin accelerates

Answer 15

nose-down elevator (accelerated)

Question 16

___ ___ ___minimizes vertical drag, nose pitches up, spin decelerates

Answer 16

nose-up elevator (unaccelerated)

Question 17

A ___ ___ is caused by maintaining full up elevator while holding anti-spin rudder, characterized by lowering of the nose and spin direction reversal.

Answer 17

progressive spin

Question 18

___ ___ is caused by maintaining pro-spin rudder and moving stick forward of neutral, immediate increase in nose-down pitch and increased roll rate

Answer 18

aggravated spin

Question 19

___ aircraft = faster spin entry, increased oscillations, faster recovery

Answer 19

lighter

Question 20

___ aircraft = slower spin entry, less oscillations, slower recovery

Answer 20

heavier

Question 21

stall speed veries ___ with pitch attitude

Answer 21

inversely

Question 22

___ pitch = smaller horiz thrust component, larger vert thrust component, slower stall speed and less oscillatory entry

Answer 22

higher

Question 23

___ pitch = larger horiz thrust component, smaller vert thrust component, higher stall speed and more oscillatory entry

Answer 23

lower

Question 24

stall speed varies ___ with power setting

Answer 24

inversely

Question 25

___ ___: stabilizes at lower pitch, stabilizes slower with more oscillation, rotation rate increased

Answer 25

right spin

Question 26

___ ___: stabilizes at higher pitch, stabilizes faster with less oscillation, rotation rate decreased

Answer 26

left spin