Final answer:
The major issue in the Long Ridge Gliding Club case study is the need for understanding how to control a heavier-than-air flying machine. The investigators of flight conducted experiments with kites and gliders to develop controllable airplane designs. Wing warping was used to control the aircraft's movement.
Step-by-step explanation:
The major issue in the case study of Long Ridge Gliding Club is the need for understanding how to control a heavier-than-air flying machine. The primary focus of the investigators of flight in this case study was to develop controllable airplane designs through careful experiments with kites and gliders. They specifically focused on wing warping or bending of wings to cause the aircraft to bank and move up and down. By addressing this issue, they believed they had solved the other primary issues of sufficiently powerful engines and shaping wings for lift.