Objective:
An advanced training maneuver designed to develop coordination
skills while the pilot's attention is directed at maintaining
a pivotal position on a selected pylon. While not truly a ground
track maneuver, the objective is similar-to develop the ability
to maneuver the airplane accurately while dividing one's attention
between the flightpath and the selected points on the ground..
(From AFH pp. 6-11, 6-12) Pilot will learn to stay on a line
of reference by varying bank and altitude and remaining coordinated.
Content:
Line-of-sight reference points, estimation of pivotal altitude,
coordination, division of attention, changing altitude to remain
on line of sight for two pylons.
Equipment:
Airworthy aircraft. PTS. Visual aids (Jeppesen Commercial pp.
14-22, 14-23, AFH 6-11).
Schedule:
Ground lesson: 25 minutes
Instructor demonstration: 15 minutes
Student practice: 25 minutes
Postflight feedback: 5 minutes
Instructor:
Preflight: (see lesson plan) motivate, explain, have student be
an armchair pilot, list common errors, discuss.
In flight: Demonstrate proper eights-on-pylons while talking through
it. Coach and encourage student.
Postflight: Give feedback and suggestions.
Student:
Preflight: Attend to explanation, be an armchair pilot, answer
questions
In flight: Perform new maneuver after demonstration
Postflight: Ask questions.
Completion standards:
Exhibits knowledge, including relationship of ground speed change
to performance of the maneuver, determines appropriate pivotal
altitude, selects suitable pylons, conducts proper entry, holds
pylons to line of sight using appropriate corrections to bank
and altitude while avoiding slips and skids.
Review: Turns around a point, steep turns, turning
climbs, turning descents
Objective: To learn a maneuver based on pivotal
altitude and line-of-sight reference, developing coordination
skills and division of attention between flightpath and reference
point.
Materials: AFH and Jeppesen pictures
Attention/motivation: (1 minute)
Most of the maneuvers learned thus far have to do with ground
tracking, or maintaining particular pitch/bank configs. There's
one more skill: using what's called a "pivotal altitude"
and varying that altitude to maintain a line of sight. This will
give one more tool (alt. variation) to your turning repertoire.
Overview and explanation: (10 minutes)
First, give a general description of how the maneuver looks.
Pivotal altitude: As groundspeed increases, pivotal altitude
increases. As groundspeed decreases, pivotal altitude decreases.
If the pylon moves forward of the line-of-sight, descend (lowers
pivotal altitude and increases speed). If the pylon moves aft
of the line of sight, climb (slow down). Stay coordinated: DO
NOT USE RUDDER TO HOLD THE PYLON.
1. CLEAR THE AREA
2. Decide on two pylons that are a proper distance apart: 3 to
5 seconds of straight-and-level flight between turns. Perpendicular
to the wind direction.
3. Estimate the pivotal altitude (GS2/11.3)
4. Pivotal altitude can also be found experimentally, using the
technique described in AFH pp. 6-12, 6-13, It can also be adjusted
experimentally while flying the maneuver.
5. Enter from the upwind side (plane is flying downwind), into
the diagonal for the first pylon so that the first turn goes upwind.
6. Establish the abeam "line of sight" (explain): probably
something to do with the wingtip.
7. Roll into a 30o to 40o bank. (attention outside, in, and around.)
8. Decrease pivotal altitude and reduce angle of bank as you turn
into the wind (GS goes down). Keep the line of sight and pylon
together via changes in altitude (fore and aft) and bank angle
(above/below placement). (attention outside, in, and around.)
9. Straight-and-level between the pylons for 3-5 seconds. (attention
outside, in, and around.)
10. Go the other way. (attention outside, in, and around.)
11. Exit on the other diagonal.
12. CHECKLIST!
NOTE: Plane will be high and steep on the downwind side of pylons,
and low and shallow on the upwind.
Armchair piloting: (5 minutes)
Instructor will describe where the plane is as st pretends to
do the maneuver, concentrating simply on climbing or descending
depending on where the pylon is compared to the line of sight.
Common errors: (2 minutes)
Selection of pylons w/o emerg. landing area
Faulty entry
Poor planning, orientation, div. of attention
Uncoordinated use of rudder
Improper wind and altitude/bank correction
Oral evaluation/quiz and discussion questions:
(2 minutes)
Q: How far apart should the pylons be, and what orientation should
they have to the wind?
Q: What's the initial pivotal altitude in the Arrow? (Cruise
is about 110 Kts.) A: 1070 ft.
Q: Do you enter while going upwind, or downwind?
Q: If the pylon goes behind the line of sight, what do you do?
Q: If the pylon goes before the line of sight, what do you do?