// ORBITAL LOGISTICS AND PROPULSION TERM
Lift Coefficient
A dimensionless number that quantifies the amount of lift generated by a wing or airfoil for a given angle of attack, speed, and air density.
TECHNICAL DEFINITION
A dimensionless coefficient (CL) used in aerodynamics to relate the lift generated by a lifting body (e.g., wing, airfoil) to the fluid density, velocity, and reference area, crucial for aircraft design and performance analysis.
BACKGROUND
The fuel economy in aircraft is the measure of the transport energy efficiency of aircraft. Fuel efficiency is increased with better aerodynamics and by reducing weight, and with improved engine brake-specific fuel consumption and propulsive efficiency or thrust-specific fuel consumption. Endurance and range can be maximized with the optimum airspeed, and economy is better at optimum altitudes, usually higher. An airline efficiency depends on its fleet fuel burn, seating density, air cargo and passenger load factor, while operational procedures like maintenance and routing can save fuel.
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- CL
- Coefficient of Lift
- Aerodynamic Lift Factor
USAGE NOTE
Aircraft designers optimize the wing's shape to achieve a high lift coefficient at various flight conditions.
DEVELOPERS
Organizations developing technology related to Lift Coefficient.
As a leading space agency, NASA conducts extensive research and development in aeronautics and astronautics, including fundamental studies on aerodynamics, wing design, and flight dynamics where lift coefficient is a critical parameter for aircraft and spacecraft performance.
A major global aerospace company, Boeing designs and manufactures commercial airplanes, military aircraft, and space systems. The lift coefficient is a fundamental aspect of their aerodynamic design process for wings, control surfaces, and overall vehicle performance.
As one of the world's largest aircraft manufacturers, Airbus heavily relies on advanced aerodynamic principles, including precise control and understanding of lift coefficient, for the design, optimization, and performance of its commercial aircraft families and defense products.
SpaceX designs, manufactures, and launches advanced rockets and spacecraft. Understanding and managing lift coefficient is crucial for the aerodynamic stability and control of their launch vehicles during ascent and re-entry, as well as for the controlled descent and landing of reusable stages.
A global security and aerospace company, Lockheed Martin develops advanced aircraft, missiles, and space systems. Aerodynamic efficiency and lift coefficient analysis are integral to the design and performance validation of their high-performance platforms across diverse missions.
ESA is involved in the development of launch vehicles, satellites, and space exploration missions. Aerodynamic studies, including the analysis of lift coefficient, are vital for the design of fairings, re-entry vehicles, and atmospheric flight phases of various space systems.
DLR is Germany's national aeronautics and space research centre. They conduct extensive research in aerodynamics, flight mechanics, and space transportation, where the measurement, prediction, and optimization of lift coefficient are core to their work on aircraft and spacecraft designs.