I recalled after reading articles about railway brakes. Fifteen years ago, the following problem was vigorously discussed on Internet forums:
Aircraft (jet or propeller) is on the runway with a moving surface (such as a conveyor). The coating can move against the direction of take-off of the aircraft, that is, towards it. It has a control system that monitors and adjusts the speed of movement of the canvas so that the speed of rotation of the wheels of the aircraft is equal to the speed of movement of the canvas. Question: Can a plane run up on this canvas and take off?In 2008, the Mythbusters in the 97th issue of the program conducted an experiment on a task on an ultralight aircraft, which took off from a canvas canvas, which was pulled in the opposite direction by a pickup truck at the speed of the aircraft taking off the ground. The plane took off. When solving the problem, possible braking in the aircraft landing gear was not taken into account.
However, on September 7, 2011, a Yak-42D aircraft accident occurred in Yaroslavl. The immediate cause of the crash was called pressing one of the pilots on the brake pedals during the takeoff run.
To confirm the cause of the disaster in Zhukovsky, flight experiments were carried out with the landing gear braking on takeoff. The experiments showed that with a certain braking of the landing gear, the plane does not take off.
These data allowed us to formulate a more accurate solution to this problem, taking into account the possible braking of the landing gear during take-off: Depending on the thrust-weight ratio and configuration of the aircraft, there is a coefficient of friction of the landing gear, beyond which the airplane will not take off.
This decision is indicative from the point of view of risk management, requiring the identification of the greatest possible number of existing dangers and their risks.
Note. This decision was discussed at the source of the problem - the Avia.ru forum and was recognized as more correct and complete.