With a groundspeed of 135 knots during departure (TUS7.TUS), what climb rate must be maintained?

To determine the required climb rate during departure when the aircraft is achieving a groundspeed of 135 knots, it's essential to consider the relationship between groundspeed, climb rate, and the angle of climb.

In this scenario, a climb rate of 890 feet per minute correlates well with the specified groundspeed of 135 knots. When calculating the required climb rate, pilots and dispatchers utilize a climb gradient, often expressed as a percentage or ratio. A common reference for jet aircraft is a climb gradient of approximately 1,000 feet per nautical mile, which translates into around 1,000 feet per minute at 100 knots.

At a groundspeed of 135 knots, the climb rate should be adjusted accordingly. Using a ratio of climb rate to groundspeed, we can infer that a climb rate of approximately 890 feet per minute would yield a climb gradient close to 1,000 feet per nautical mile in this scenario, making it a commonly accepted figure for departures within that speed range.

The other options, while representing different climb rates, do not align as closely with the groundspeed specified. A significantly higher or lower climb rate would not typically be utilized for a departure at that speed without specific operational requirements justifying such a change