## What is a good rate of climb?

Best rate of climb, or Vy, maximizes velocity to obtain the greatest gain in altitude over a given period of time. Vy is normally used during climb, after all obstacles have been cleared. It is the point where the largest power is available. Occurs above L/Dmax for a jet.

**What is best rate of climb speed?**

Best rate of climb, otherwise known as Vy, is the speed that will allow an aircraft to gain the most amount of altitude in the least amount of time—otherwise expressed as a ratio of altitude over time.

**How do I find the best climb rate?**

The aircraft’s rate of climb (R/C), how quickly it gains altitude, expressed in feet per minute (fpm), can be derived from the formula: R/C = ETHP x 33,000/Weight (1). We see from the formula that increasing the weight of an aircraft is a significant factor. Doubling the weight will cut our rate of climb in half.

### What is the best angle of climb speed?

An aircraft climbs because of excess thrust or excess power. Vx is your best angle of climb speed, and Vy is your best rate of climb speed.

**When to use the best rate of climb?**

The point of maximum excess power for propeller aircraft is reached at a true airspeed just slightly past its max lift to drag ratio. For jet aircraft, the best rate of climb speed is reached well past the aircraft’s maximum lift to drag point. Best rate of climb is useful when a pilot needs to get the highest climb rate possible.

**How many feet per minute do you need to climb?**

Since we cannot climb in visual conditions and the ceiling is less than 300 feet we will need to climb at 255 feet per nautical mile. After reviewing the aircraft flight manual we determine our rate of climb for today’s conditions is 850 feet per minute.

#### What is the rate of climb per nautical mile?

The result will be the required rate of climb in feet per minute. If a climb gradient of 200 ft per nautical mile is required and our ground speed in the climb is 90 knots we will need a rate of climb of 300 feet per minute.

**How to calculate the rate of climb gradient?**

If a climb gradient table is not available, the rate of climb can be calculated manually. Take your ground speed in nautical miles per hour, divide by 60 minutes per hour, and multiply by the climb gradient in feet per nautical mile.