Flight Mechanics and Control

5.

Static Stability Principles

5.1.

Stability Concepts

5.1.1.

Static Stability Definition

5.1.1.1.

Positive Static Stability

5.1.1.2.

Neutral Static Stability

5.1.1.3.

Negative Static Stability

5.1.2.

Dynamic Stability Overview

5.1.2.1.

Relationship to Static Stability

5.1.2.2.

Stability Criteria

5.1.3.

Restoring Moments

5.1.3.1.

Moment Generation

5.1.3.2.

Stability Derivatives

5.2.

Longitudinal Static Stability

5.2.1.

Wing Contribution to Stability

5.2.1.1.

Aerodynamic Center Location

5.2.1.2.

Wing Moment Characteristics

5.2.1.3.

5.2.1.4.

5.2.2.

Fuselage Contribution to Stability

5.2.2.1.

Fuselage Moment Generation

5.2.2.2.

Destabilizing Effects

5.2.2.3.

Upwash and Downwash

5.2.3.

Horizontal Tail Contribution

5.2.3.1.

Tail Volume Coefficient

5.2.3.2.

Tail Efficiency Factor

5.2.3.3.

Downwash Effects

5.2.3.4.

Tail Moment Arm

5.2.4.

Power Effects on Stability

5.2.4.1.

Thrust Line Position

5.2.4.2.

Propwash Effects

5.2.4.3.

Power-On vs Power-Off

5.2.5.

Complete Aircraft Analysis

5.2.5.1.

Neutral Point Determination

5.2.5.2.

Static Margin Calculation

5.2.5.3.

CG Range Limits

5.2.5.4.

Stick-Fixed Stability

5.2.5.5.

Stick-Free Stability

5.3.

Lateral-Directional Static Stability

5.3.1.

Directional Stability

5.3.1.1.

Weathercock Stability

5.3.1.2.

Vertical Tail Contribution

5.3.1.3.

Fuselage Side Area Effects

5.3.1.4.

Wing-Fuselage Interference

5.3.2.

Lateral Stability

5.3.2.1.

Dihedral Effect

5.3.2.2.

Wing Sweep Effects

5.3.2.3.

Wing Position Effects

5.3.2.4.

Fuselage Cross-Section Effects

5.3.3.

Coupling Effects

5.3.3.1.

Roll-Yaw Coupling

5.3.3.2.

Sideslip Effects

5.3.3.3.

Spiral Stability

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6. Longitudinal Control Analysis