What is the fuel consumption rate for an airplane cruising at 6,000 feet?

In considering the fuel consumption rate of an airplane cruising at 6,000 feet, the correct choice reflects a reasonable average fuel flow for many small general aviation aircraft at this altitude.

At a cruising altitude of 6,000 feet, aircraft typically operate more efficiently due to lower drag and optimal engine performance in the thinner air. The figure of 9.5 gallons per hour represents a fuel burn rate that aligns with standard operational performance for a variety of light aircraft engines, particularly in the context of maintaining a balance between power and fuel efficiency during cruise flight.

Understanding fuel consumption rates involves assessing factors like engine type, aircraft weight, speed, and altitude. Generally, lower altitudes can lead to higher fuel consumption due to denser air causing increased drag. Conversely, at cruising altitudes like 6,000 feet, many aircraft are designed to optimize their fuel usage, resulting in lower burn rates compared to those that might occur at sea level or higher altitudes where certain performance drawbacks exist.

Reinforcing this principle, many small aircraft experience fuel burn rates that fall within the range of single digits to low double digits in gallons per hour, depending on their specific configuration and operational profile. Therefore, the selection of 9.5 gallons per hour accurately