From engine start to 10,000 feet pressure altitude in a normal climb, how much fuel is consumed?

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The correct answer is based on typical fuel consumption rates for general aviation aircraft during the climb phase. In the process of climbing from engine start to 10,000 feet, fuel consumption can vary depending on several factors including the aircraft type, weight, and power settings. Generally, for many light aircraft, the fuel burn rate during a normal climb is estimated to be around 15 to 20 gallons per hour.

To understand the choice of 35 pounds as a reasonable estimate for fuel consumed in this climb phase, we also have to factor in the climb duration and the fuel density, which is commonly around 6 pounds per gallon for aviation gasoline. Therefore, if a typical climb takes around 8 to 10 minutes to reach 10,000 feet, the fuel burned in this duration aligns well with the total weight of 35 pounds.

This number of 35 pounds effectively reflects a reasonable average, considering moderate climb rates and configurations. It stands upon calculations used in performance charts and operational norms in flight training and planning. The other values presented in the options, while close, do not accurately reflect this average or common estimates based on typical performance metrics.

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