At 7,500 feet and 52 percent power, what is the endurance assuming no reserve with 48 gallons of fuel?

To determine the endurance of an aircraft at a specific altitude and power setting, you'll need to consider the fuel flow rate at that power setting and the amount of fuel available. Endurance can be calculated using the formula:

Endurance (hours) = Fuel on board (gallons) / Fuel flow rate (gallons per hour).

At 7,500 feet and 52 percent power, it is expected that the fuel flow rate would be lower compared to higher power settings, thus improving endurance. When specific performance data is available for the aircraft, it is possible to find a fuel flow rate that correlates with the 52 percent power setting, which would provide the gallons per hour consumed.

In scenarios where the endurance value of 7.7 hours is derived, it's likely that the combination of the remaining fuel (48 gallons) and the fuel flow rate at that power setting results in a calculable endurance close to this number.

The calculated value suggests that with 48 gallons of fuel and the efficient fuel use at that power setting, the aircraft can sustain level flight for approximately 7.7 hours. Understanding the relationship between fuel flow rates at different power settings, along with knowledge of the aircraft's performance characteristics, allows pilots to