Definition
A visualization used in eights-on-pylons training in which the pilot imagines a straight, tight line extending from the airplane down to a fixed point on the ground (the pylon), with the line acting as if it were a rigid rod that holds the wingtip locked on the pylon throughout the maneuver.
Plain English
Picture a tight string running from your wingtip down to a spot on the ground. As you fly the maneuver, you keep that imaginary string straight and tight by adjusting your altitude so the wingtip never appears to slide off the spot.
Context Anchor
Used when learning eights on pylons, a ground-reference maneuver where the pilot turns around selected points while judging the airplane’s position by sight.
Derivation
Taut means pulled tight, with no slack. The image of a tight string conveys the idea that any slip of the wingtip off the pylon means the 'string' has gone slack, signaling the pilot to correct altitude.
Why Pilots Care
Maintaining the taut-string reference keeps the pylon stationary in the windshield, confirming correct altitude and preventing drift or the need for constant corrections during the maneuver.
Intuition Check
Do not look for an actual string or cockpit device. Here, taut string means an imagined straight line of sight to the selected point on the ground.
Example Sentence 1
During eights on pylons, the instructor reminded the student to fly as if a taut string connected the wingtip to the pylon.
Example Sentence 2
When the string developed slack, the pilot knew the airplane was below the correct pivotal altitude for the current groundspeed.