The aviation industry consumes about 1.5 billion barrels of jet fuel annually, producing around 2% of all human-induced carbon dioxide emissions (ATAG April 2014 figures). The quest to improve fuel efficiency has been high priority in the commercial aviation industry for decades, given its economic and environmental impact. In 2014, fuel expenses accounted for about 33% of the operating costs of airlines, in spite of jet airliners being over 70% more fuel efficient than the first jets of the 1960's. The efforts must continue, as CO2 emissions from aviation are expected to grow around 3% to 4% per year (ICAO estimates). Through IATA, Airlines have set a goal to further increase efficiency by at least 25% by 2025 (compared to 2005 levels). Fuel efficiency can be measured by the airplane's specific range: miles per gallon (typically a fraction). However, to compare airplanes of different sizes, one can use: seat miles per gallon of fuel.
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Tip: Rate the impact of "Increasing/Reducing aerodynamic efficiency of transport airplane airframe" on "Increasing Fuel Efficiency of Transport Airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Increase
Tip:
1) Check/Select the better way to "Increase Fuel Efficiency of Transport Airplanes":
Increase aerodynamic efficiency of transport airplane airframe, or
Reduce aerodynamic efficiency of transport airplane airframe?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Reducing/Increasing form drag of transport airplanes" on "Increasing aerodynamic efficiency of transport airplane airframe".
The higher this rating, the higher the Way will show up among others at the same level.
Reduce
Tip:
1) Check/Select the better way to "Increase aerodynamic efficiency of transport airplane airframe":
Reduce form drag of transport airplanes, or
Increase form drag of transport airplanes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing adoption of mid-wing in transport airplanes" on "Reducing form drag of transport airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Reduce form drag of transport airplanes":
Enable adoption of mid-wing in transport airplanes, or
Prevent adoption of mid-wing in transport airplanes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing adoption of three-lifting-surfaces in transport airplane" on "Enabling adoption of mid-wing in transport airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Enable adoption of mid-wing in transport airplanes":
Enable adoption of three-lifting-surfaces in transport airplane, or
Prevent adoption of three-lifting-surfaces in transport airplane?
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Tip: Rate the impact of "Reducing/Increasing induced drag in airplane wings" on "Increasing aerodynamic efficiency of transport airplane airframe".
The higher this rating, the higher the Way will show up among others at the same level.
Reduce
Tip:
1) Check/Select the better way to "Increase aerodynamic efficiency of transport airplane airframe":
Reduce induced drag in airplane wings, or
Increase induced drag in airplane wings?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Increasing/Reducing aspect ratio of transport airplane wings" on "Reducing induced drag in airplane wings".
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Increase
Tip:
1) Check/Select the better way to "Reduce induced drag in airplane wings":
Increase aspect ratio of transport airplane wings, or
Reduce aspect ratio of transport airplane wings?
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Tip: Rate the impact of "Reducing/Increasing Weight of Transport Airplane" on "Reducing induced drag in airplane wings".
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Reduce
Tip:
1) Check/Select the better way to "Reduce induced drag in airplane wings":
Reduce Weight of Transport Airplane, or
Increase Weight of Transport Airplane?
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Tip: Rate the impact of "Reducing/Increasing Weight of Airframe Structure" on "Reducing Weight of Transport Airplane".
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Reduce
Tip:
1) Check/Select the better way to "Reduce Weight of Transport Airplane":
Reduce Weight of Airframe Structure, or
Increase Weight of Airframe Structure?
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Tip: Rate the impact of "Reducing/Increasing Number of Windows in Passenger Transport Airplanes" on "Reducing Weight of Airframe Structure".
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Reduce
Tip:
1) Check/Select the better way to "Reduce Weight of Airframe Structure":
Reduce Number of Windows in Passenger Transport Airplanes, or
Increase Number of Windows in Passenger Transport Airplanes?
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Tip: Rate the impact of "Reducing/Increasing skin friction drag of airplane airframes" on "Increasing aerodynamic efficiency of transport airplane airframe".
The higher this rating, the higher the Way will show up among others at the same level.
Reduce
Tip:
1) Check/Select the better way to "Increase aerodynamic efficiency of transport airplane airframe":
Reduce skin friction drag of airplane airframes, or
Increase skin friction drag of airplane airframes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing adoption of laminar flow wing in propeller airplanes" on "Reducing skin friction drag of airplane airframes".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Reduce skin friction drag of airplane airframes":
Enable adoption of laminar flow wing in propeller airplanes, or
Prevent adoption of laminar flow wing in propeller airplanes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing placement of propellers aft of the airplane wing" on "Enabling adoption of laminar flow wing in propeller airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Enable adoption of laminar flow wing in propeller airplanes":
Enable placement of propellers aft of the airplane wing, or
Prevent placement of propellers aft of the airplane wing?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing adoption of push propellers in transport airplanes" on "Enabling placement of propellers aft of the airplane wing".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Enable placement of propellers aft of the airplane wing":
Enable adoption of push propellers in transport airplanes, or
Prevent adoption of push propellers in transport airplanes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Reducing/Increasing Interference Drag in Airplanes" on "Increasing aerodynamic efficiency of transport airplane airframe".
The higher this rating, the higher the Way will show up among others at the same level.
Reduce
Tip:
1) Check/Select the better way to "Increase aerodynamic efficiency of transport airplane airframe":
Reduce Interference Drag in Airplanes, or
Increase Interference Drag in Airplanes?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Enabling/Preventing adoption of wing root fairings" on "Reducing Interference Drag in Airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Enable
Tip:
1) Check/Select the better way to "Reduce Interference Drag in Airplanes":
Enable adoption of wing root fairings, or
Prevent adoption of wing root fairings?
2) Star/Like the better way to "Achieve A Better World".
Tip: Rate the impact of "Increasing/Reducing fuel efficiency of airplane engines" on "Increasing Fuel Efficiency of Transport Airplanes".
The higher this rating, the higher the Way will show up among others at the same level.
Increase
Tip:
1) Check/Select the better way to "Increase Fuel Efficiency of Transport Airplanes":
Increase fuel efficiency of airplane engines, or
Reduce fuel efficiency of airplane engines?
2) Star/Like the better way to "Achieve A Better World".
