:: It is helpful to think of these speeds as projections of the relative wind vector on to the three body axes, rather than in terms of the translational motion of the vehicle relative to the fluid.
32.
McGann, playing the back nine first, was 5-over-par for the tournament after five holes on Friday, then played the final 13 holes _ again in relative wind-free warmth _ 5-under for an even-par 142 for 36 holes.
33.
This results in the rotor disk being tilted to the rear and is referred to as flap back, as if the rotor disk had flapped or tilted back, or as if it had been blown back by the relative wind.
34.
However, on some aircraft, such as the McDonnell Douglas AV-8B Harrier II, the pilot may be forced to eject when in a hover, or when going too slow for the relative wind to move the canopy out of the path of the ejection seat.
35.
If the pilot can maintain a level attitude ( nose position in relation to the horizon ) and keep the wings level, the plane should theoretically float downward at its terminal velocity, which is partially determined by the shape of the plane in the direction of the relative wind.
36.
The pilot manipulates these flight characteristics by changing the shape of the torso, de-arching and rolling the shoulders and moving hips and knees, and by changing the angle of attack in which the wingsuit flies in the relative wind, and by the amount of tension applied to the fabric wings of the suit.
37.
Which way the helicopter rotor disk moves against the direction of the relative wind will determine which part of the disk has higher lift . For instance, hovering sideways, or hovering stationary in a crosswind, the clean portion of the disk would be to the side, rather than the front of the rotor disk.
38.
It did this by automatically receiving information from the director ( LOS ), the FC Radar ( range ), the ship's gyrocompass ( true ship's course ), the ship's Pitometer log ( ship's speed ), the Stable Vertical ( ship's roll and pitch ), and the ship's anemometer ( relative wind speed and direction ).
39.
The vector labelled " boat speed " represents the relative wind resulting from the boat's progress through the water, that is, the wind that is induced by the boat's motion : its speed is the same as the speed of the boat and its direction is directly opposite to the direction of the boat's motion.
40.
An upwind vessel is able to manoeuvre at will toward any downwind point, since in doing so the relative wind moves aft . A vessel downwind of another, however, in attempting to attack upwind, is constrained to trim sail as the relative wind moves forward and cannot point too far into the wind for fear of being headed.
