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F-35 Lightning II: Evaluating its fuel efficiency compared to older jets

F-35 Lightning II: Evaluating its fuel efficiency compared to older jets
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Webp taiclet
James Taiclet CEO at Lockheed Martin | Lockheed Martin

When comparing military jet fighters to commercial jetliners, there are significant differences in design priorities. Commercial aviation has focused on fuel efficiency due to climate regulations and fuel costs, while military jets prioritize stealth, speed, and maneuverability, often resulting in shorter flight ranges and higher fuel consumption.

The F-35 Lightning II, a Lockheed Martin combat aircraft designed for air superiority and strike missions, exemplifies these military priorities. The F-35A variant's fuel efficiency was estimated at 0.416 nautical miles per gallon of jet fuel based on a specific loadout and operational range. However, factors such as loadout differences between variants can affect this figure.

Lockheed Martin's documentation suggests the F-35 has a combat radius of 760 nautical miles, translating to a potential range of at least 1,520 nautical miles. This would increase its fuel efficiency to 0.536 nautical miles per gallon when using Lockheed's data.

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Despite its lower top speed compared to older jets like the McDonnell Douglas F-4E Phantom II, the F-35 offers improved combat radius efficiency. The Phantom II had better overall fuel efficiency but lacked modern stealth capabilities.

The F-35 is noted for being the first long-range stealth fighter with an extended combat range due to advanced ordnance like the Kongsberg Defence & Aerospace Joint Strike Missile (JSM). Stealth remains a critical asset for the F-35 in modern warfare environments dominated by advanced surveillance technologies.

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