This is a chart to reference for descending with either a 3° or 2° descent. This is for quick reference when beginning descent. Enjoy!
VS For Descending
| Mach Speed | VS (3° Descent) | VS (2° Descent) |
|---|---|---|
| 0.85 | -2600 fpm | -1700 fpm |
| 0.84 | -2500 fpm | -1700 fpm |
| 0.83 | -2500 fpm | -1700 fpm |
| 0.82 | -2500 fpm | -1600 fpm |
| 0.81 | -2400 fpm | -1600 fpm |
| 0.80 | -2400 fpm | -1600 fpm |
| 0.79 | -2400 fpm | -1600 fpm |
| 0.78 | -2300 fpm | -1600 fpm |
| 0.77 | -2300 fpm | -1500 fpm |
| 0.76 | -2300 fpm | -1500 fpm |
| 0.75 | -2300 fpm | -1500 fpm |
Notes
Calculations made with formula
Vertical speed (ft/min) = Descent angle (°) x Mach x 1000
found here
3° Descent is used by real world pilots. 2° is a personal preference, and offers a smoother descent.