What is a laminar flow wing?
Laminar flow airfoils were originally developed for the purpose of making an airplane fly faster. The laminar flow wing is usually thinner than the conventional airfoil, the leading edge is more pointed and its upper and lower surfaces are nearly symmetrical. While laminar flow can offer certain benefits regarding fluid control and predictability, it also suffers from disadvantages, such as higher sensitivity to disturbances, lower heat and mass transfer rates, and limited applicability in high-speed, large-scale systems.
What is a disadvantage of laminar flow?
Limited Flow Rates: Laminar flow is generally limited to low flow rates due to its requirement for smooth, parallel flow. Achieving laminar airflow, however, can result in increased range, greatly improved fuel efficiency and reduced exhaust emissions.
How do wings use laminar flow?
The airfoil should therefore be designed well enough to preserve the laminar regime of the airflow to minimize drag and increase the lift of wings. When this air moves at low velocity, a streamlined flow of air is observed, which is the laminar flow of air. The faster air flowing over the top of the wing creates lower pressure than the slower moving air under the wing. Lift is partially achieved because high-pressure air pushes toward low-pressure air, pulling the airplane upward.