- drag coefficients
- • коефициент на челно съпротивление• коефициент на триене при изтегляне
English-Bulgarian polytechnical dictionary . 2013.
drag coefficients
Look at other dictionaries:
Drag coefficient — In fluid dynamics, the drag coefficient (commonly denoted as: cd, cx or cw) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation,… … Wikipedia
Automobile drag coefficient — The drag coefficient is a common metric in automotive design, where designers strive to achieve a low coefficient. Minimizing drag is done to improve fuel efficiency at highway speeds, where aerodynamic effects represent a substantial fraction of … Wikipedia
Very-low-drag bullet — Very low drag bullets (VLD) are primarily a small arms ballistics development of the 1980s–1990s, driven by shooters desire for bullets that will give a higher degree of accuracy and kinetic efficiency, especially at extended ranges. To achieve… … Wikipedia
aerodynamic coefficients — Nondimensional coefficients for aerodynamic forces and moments. The most common are the coefficients of lift and drag (i.e., CL and CD ) … Aviation dictionary
Morison equation — Flow forces according to the Morison equation for a body placed in a harmonic flow, as a function of time. Blue line: drag force; red line: inertia force; black line: total force according to the Morison equation. Note that the inertia force is… … Wikipedia
Bell P-63 Kingcobra — P 63 Kingcobra Role Fighter Manufacturer Bell Aircraft Corporation First flight … Wikipedia
Vertical axis wind turbine — Vertical axis wind turbines (VAWT) are a type of wind turbine where the main rotor shaft runs vertically. Among the advantages of this arrangement are that generators and gearboxes can be placed close to the ground, and that VAWT do not need to… … Wikipedia
Automotive aerodynamics — forces at high speeds. For some classes of racing vehicles, it may also be important to produce desirable downwards aerodynamic forces to improve traction and thus cornering abilities.An aerodynamic automobile will integrate the wheel arcs and… … Wikipedia
Eco-marathon — The Eco Marathon is an annual competition sponsored by Shell, in which participants build special vehicles to achieve the highest possible fuel efficiency. The Eco Marathon is held around the world with events in the UK, Finland, France, Holland … Wikipedia
Vortex induced vibration — Vortex induced vibrations (VIV) are motions induced on bodies facing an external flow by periodical irregularities on this flow. The classical example is the VIV of an underwater cylinder. You can see how this happens by putting a cylinder into… … Wikipedia
Paper plane — This article is about toy aircraft fashioned from paper. For other uses, see Paper plane (disambiguation). Instructions for a traditional paper plane. A paper plane, paper aeroplane (UK), paper airplane (US), paper glider, paper dart or dart is a … Wikipedia
