The most efficient cruising speed is found at the bottom of the total drag curve
, itself formed by combing the curves for induced and parasite drag.
The steady state speed determined vehicle mechanical drag curve
is analogous to the J2264 procedure vehicle mechanical drag curve
calculated by subtracting the dynamometer set coefficients from the vehicle Track Target values.
When certifying a vehicle's fuel economy, the drag curve
coefficients are set to match the results of a coast down test .
As known from the standard experimental drag curve
, drag coefficient fluctuates heavily under the condition of transition flow and turbulence flow (2 x [10.sup.5] [less than or equal to] Re [less than or equal to] [10.sup.6]).
Drag coefficient is an exact representation of a bullet's drag, and when matched against Doppler-recorded velocities, it produces an exact drag curve
of a projectile as a function of velocity.
Mike Rice, PENN Brand Manager, said what you need is a reel with a long range in the drag curve
. "The Clash's new wave spring versus the traditional coil spring helps you extend your drag's range, meaning more turns and more control of your drag," he said.
Details of the drag curve
near the onset of vortex shedding.
During system set-up the user enters values for the weapon, the round he is firing, the muzzle velocity, the barrel spin ratio, the bullet weight, the drag curve
, the weapon boresight range and the direct-view optical sight height off the rail.
Although work to cater for the new large airliner is well in hand at some airports, particularly in Asia, at others it is considered to be lagging behind the drag curve
and has been much slower to be initiated.
The way BC-based programs work is to use the drag curve
of a standard projectile as a baseline.
For the calculation of [x.sub.c,opt] in the plenum method, it was important to consider that values of [x.sub.c,opt] < 3.0 m may underlie errors of extrapolation using the drag curve
The actual drag curve
, as measured by radar, now matched what modeling predicted.