25 - Fire Control, Launchers, and Ballistic Missiles

Question 1

Factors in the Fire Control problem

Answer 1

1. Continuously measure present target location
2. Effects of relative motion during engagement
3. Effects of interior and exterior ballistics

Question 2

Fire Control Solution Requirements

Answer 2

Target Parameters
- Current target position

Weapon Parameters
- Guidance/propulsion method
- Weapon Time-of-flight

Question 3

Design requirements for Weapon Launching Systems (WSL)

Answer 3

1. Compatibility
2. Reliability
3. Speed
4. Safety

Question 4

Function of WSLs

Answer 4

• Storage
• Transfer
• Loading
• Control
• Launching

Question 5

WSL Launching types

Answer 5

• Gravity
• Reaction
  -Missiles, rockets
• Impulse
  -Ejector-type
  -Gun-type

Discharge of weapon out of launcher.

Question 6

Projectile Design of Impulse Gun-type launchers

Answer 6

1. Base
2. Rotating Band
3. Body
4. Bourrelet
5. Ogive
   - Aerodynamic shape

For projectiles >20mm

Question 7

Types of Propellant Burn Rates

Answer 7

• Degressive Propellant
• Progressive Propellant
• Neutral Propellant

Question 8

What is Pressure Production determined by?

Answer 8

1. Size and shape of powder grain
2. Chemical burn rate constant
3. % of volatile material & moisture present
4. Thickness & amount of surface area

Propellant Mass & Burn Rate determine Pressure