CAE SOPs state a fuel burn at economy cruise speed is what?

CAE SOPs state a fuel burn at economy cruise speed is what?

• A. 22 GPH
• B. 12 GPH
• C. 24 GPH
• D. 45 GPH

Answer: (A)

Fuel burn at economy cruise speed is the rate at which fuel is consumed when the aircraft is flown at the most fuel-efficient cruise setting. This figure is used in flight planning to estimate trip fuel and endurance, because it represents the practical balance between speed and fuel use—the speed that minimizes fuel per mile rather than just maximizing speed. In CAE SOPs, the standard figure for economy cruise is about 22 GPH. This reflects the typical fuel flow you’d expect when the engine is set to a cruising condition that prioritizes efficiency. It’s higher than the most optimistic lower numbers you might imagine, and lower than the high fuel flows you’d see at higher power settings or less efficient configurations. The other options don’t fit this commonly used planning figure: 12 GPH is unrealistically low for a cruise regime in most aircraft, 24 GPH is close but not the SOP value, and 45 GPH would correspond to a much less efficient or higher-power regime. So, the 22 GPH figure aligns with the standard economy-cruise planning assumption used in CAE SOPs.

Fuel burn at economy cruise speed is the rate at which fuel is consumed when the aircraft is flown at the most fuel-efficient cruise setting. This figure is used in flight planning to estimate trip fuel and endurance, because it represents the practical balance between speed and fuel use—the speed that minimizes fuel per mile rather than just maximizing speed.

In CAE SOPs, the standard figure for economy cruise is about 22 GPH. This reflects the typical fuel flow you’d expect when the engine is set to a cruising condition that prioritizes efficiency. It’s higher than the most optimistic lower numbers you might imagine, and lower than the high fuel flows you’d see at higher power settings or less efficient configurations. The other options don’t fit this commonly used planning figure: 12 GPH is unrealistically low for a cruise regime in most aircraft, 24 GPH is close but not the SOP value, and 45 GPH would correspond to a much less efficient or higher-power regime.

So, the 22 GPH figure aligns with the standard economy-cruise planning assumption used in CAE SOPs.