Control Systems

Question 1

Control Section

Answer 1

Uses data from the guidance system to move control surfaces to maneuver the missile in flight

Question 2

Answer 2

Question 3

Control Computer

Answer 3

translates the desired surface position into positional commands for the actuators

Question 4

Actuators

Answer 4

translate the position commands from the control computer into mechanical movement of the control surfaces.

Typically servo motor.

Question 5

Answer 5

Question 6

Why Canards?

Answer 6

Better maneuverability at low angles of attack, worse at high angles of attack.

This is because their position ahead of the CoG destablizes the missile. It is very sensitive.

Question 7

Split Canard

Answer 7

Two sets of canards, on immediately behind another.

The first set produces votrices which increase the speed of airflow ofver the second set of canards, making them more effective.

Question 8

Wings

Answer 8

Control surface located near the CoG.

Fast response with little motion of the body.

Wings are large and generate vortices on the tails that cause induced roll.

Question 9

Tail Fins

Answer 9

Control surfaces located on the aft end of the missile behind the CoG.

Good maneuverability at high angles of attack due to CoP behind CoG.

Question 10

Unconventional Control: Thrust Vectoring

Answer 10

Deflecting missile exhaust to generate a component of thrust

Question 11

Strakes

Answer 11

Provide lift and stability

Question 12

Answer 12

Question 13

Control Arrangement: Planform

Answer 13

Control surfaces 180 degrees from eachother

Question 14

Bank-To-Turn

Answer 14

Rolls to turn.

Loses lift and speed.

Question 15

Skid-To-Turn

Answer 15

Missile does not roll to turn.

Faster than coordinated turn.