Thursday, May 1, 2008
Wingipedia, Part II
In this edition, “Jenny” through “roll”
|Last month, we brought you the first installment (“acrobatics” through “induced drag”) of Wingipedia, our aviation-based encyclopedia. Here, we present the second installment. If you think that something’s missing, log on to planeandpilotmag.com to contribute your own additions.|
The first quantum leap in U.S. fighter design in several decades, it may well be the last, given changing world-combat requirements. The airplane is practically invisible to prying electronic eyes, can maneuver like a humming bird, packs a lethal punch and costs as much as the gross national product of many small countries.
The relative bearing is a direction as measured off the nose of the aircraft. For instance, a 30-degree bearing is 30 degrees to the right of the nose. Relative bearing relates only to the airplane itself and has no relationship to any other form of heading (magnetic, compass heading, etc.).
Risk is what we try to manage throughout every aspect of a flight. Just being off the ground in a machine is a risk, but through skill and planning, all aspects of that risk can be managed.
A complete 360 maneuver around the longitudinal axis, the primary variations on the roll are the aileron roll (1 G, nose descending); slow roll (-1 G, nose on a given reference); barrel roll (1.5 to 2 G’s, nose going around a point 45 degrees off-axis); and snap roll (high-speed stall into a horizontal spin). They’re all fun!
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