Fuel consumption during takeoff is significantly high. This is due to the fact that the aircraft must generate a large amount of thrust to overcome the force of gravity and reach the speed necessary for takeoff. The specific fuel consumption will depend on several factors: the type of aircraft, the weight of the cargo (which includes both passengers and actual cargo), the expected flight distance, and atmospheric conditions, such as wind and temperature.
For an airliner, such as a Boeing 737 or an Airbus A320, takeoff fuel consumption can actually range between 2.000 and 5.000 liters, depending on conditions. This period of high fuel consumption does not last long, generally only during the first few minutes of the flight, until the aircraft reaches a more fuel-efficient altitude and cruising speed.
After takeoff, the aircraft transitions to the climb phase, during which fuel consumption decreases but still remains high compared to the cruise phase. During cruise, the aircraft is able to fly more efficiently, consuming less fuel per mile or kilometer flown, due to less air resistance and greater efficiency of the engines at these altitudes.
Interestingly, airlines and aircraft manufacturers are constantly working to improve the fuel efficiency of aircraft through technological innovation, such as introducing lighter materials, improving aerodynamic shapes and developing more efficient engines. These efforts not only reduce the cost of fuel for airlines but also help reduce the environmental impact of air travel.
