lực nâng
Definition
- Noun:
- Lift: The aerodynamic force that acts perpendicular to the direction of airflow, opposing the weight of an aircraft or object and enabling flight.
- Upward force: In a broader physical context, any force that acts in an upward direction, counteracting the force of gravity.
Usage Examples
- Noun:
- Lực nâng của cánh máy bay được tạo ra bởi hình dáng đặc biệt của nó. (The lift of the airplane wing is generated by its special shape.)
- Cánh quạt tạo ra lực nâng để trực thăng bay lên. (The rotor blades generate lift for the helicopter to ascend.)
- Thiết kế này nhằm tối ưu hóa lực nâng và giảm lực cản. (This design aims to optimize lift and reduce drag.)
Advanced Usage
- "Hệ số lực nâng" (Lift coefficient): A dimensionless coefficient that quantifies the lift generated by a foil or wing.
- Hệ số lực nâng thay đổi theo góc tấn. (The lift coefficient varies with the angle of attack.)
Variants and Related Words
- Lực đẩy (n): Thrust; a force that propels an object forward.
- Lực cản (n): Drag; a force that opposes an object's motion through a fluid.
- Lực hấp dẫn (n): Gravitational force; the force of attraction between masses.
Synonyms
- Aerodynamic lift: The specific force that enables flight.
- Upthrust: An upward force, often used in fluid mechanics.
Related Scientific Concepts
- Nguyên lý Bernoulli (Bernoulli's principle): A principle explaining how the pressure variation around a wing contributes to lift.
- Định luật Newton thứ ba (Newton's third law): The action-reaction principle that also explains the generation of lift.