Читать книгу Flight Theory and Aerodynamics - Joseph R. Badick - Страница 42
SYMBOLS
Оглавление| a | acceleration (ft/s2) |
|---|---|
| E | Energy (ft‐lb) |
| KE | Kinetic energy (ft‐lb) |
| PE | Potential energy (ft‐lb) |
| TE | Total energy (ft‐lb) |
| F | Force (lb) |
| F b | Braking force (lb) |
| g | Acceleration of gravity (ft/s2) |
| h | Height (ft) |
| HP | Horsepower |
| L | Moment arm (ft or in.) |
| m | Mass (slugs, lb‐s2/ft) |
| M | Moment (ft‐lb or in.‐lb) |
| N | Normal force (lb) |
| r | Radius (ft) |
| rpm | Revolutions per minute |
| s | Distance (ft) |
| T | Thrust (lb) |
| t | Time (second) |
| V | Velocity (ft/s) or (kts.) |
| Vf | Final velocity (ft/s) |
| V k | Velocity (kts.) |
| V i | Initial velocity (ft/s) |
| V t | Tangential (tip) speed (ft/s) |
| W | Weight (lb) |
| μ (mu) | Coefficient of friction (dimensionless) |
