In response to Steve, reply #5. Yes the pattern was much different in 1947. Since Jim Walker provided the trophy, he also had a big say in the rules, thus many of them things he could do flying exhibition flights with his Fireball models. At that time the scoring was based on 3 classes of maneuvers. Precision, Aerobatics and Novelty.
Precision: Take off, overhead flight, wheel touching, landing, spot landing.
Aerobatics: Wingover, vertical dive, stall and recovery, inside loop, consecutive loops, square loop, inverted flight, outside loop, inverted inside loop, inverted outside loop, pair of spectacles, rolls, flying two planes at once, looping two planes at once, waltz or formation shift.
Novelty: Unassisted takeoff, pick up glider, pickup other object, release glider, sign or parachute, laying smoke screen, retract landing gear, carrier flight , dive bombing, balloon bursting, motor control, multiple motor, remote control.
In 1948 AMA went to pretty much what we use for OTS today except the horizontal 8s did not call for vertical in the center and they added a "special maneuver", one of which was to build a 3 foot square of 1/16 sheet balsa, soak it with fuel, light it on fire and fly the model right through it!
The next iteration revised the pattern to the one we fly today in the OTS event.
Topic: OTS pattern from AMA? or another source (Read 1491 times)