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Fuel Burn Vs Weight

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Old 7th May 2004 | 11:12
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Fuel Burn Vs Weight

B738, anyone got a rule of thumb or preferably a formula for working out extra\reduced fuel burn for a TO weight that differs from the computer plog TO weight.

Jeppesen used to provide this on our plogs for a previous company, eg 78kg per 1000kg above or below scheduled TO weight. Their calculation obviously based on flight time and flight profile.

Brgds
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Old 7th May 2004 | 15:20
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ECON cruise, LR cruise...
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From: MIRSI hold - give or take...
Thumbs up

Thumb rule - you save 3,5% of the weight reduction.

Offload 3000 kg - you save 105 kg. fuel.

Brgds
Empty
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Old 7th May 2004 | 16:27
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Agree with Empty Cruise's figure of 3.5 %, but it's 3.5% per hour.
Monty Cristo is offline  
Old 7th May 2004 | 18:04
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ECON cruise, LR cruise...
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Joined: Apr 2002
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From: MIRSI hold - give or take...
Wink DOH!

Of course Slick - I should start reading my own posts after posting them - might catch the odd embarrasing omission.

But hey - you did the work for me

Stay safe - brgds from
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Old 8th May 2004 | 18:13
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Thanks fellas,

brgds
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