At idle engine thrust, what is the jet blast velocity reaching behind the aircraft?

At idle engine thrust, the jet blast velocity behind the aircraft is indeed less than 65 MPH. This phenomenon is critical for pilots and ground personnel to understand since jet blast can pose safety risks during taxi operations, particularly in relation to surrounding personnel and equipment. The jet blast is produced when hot gases exit the engine and can create significant wind effects even at lower thrust settings.

Understanding the specifics of jet blast velocity helps in preparing for departure and landing operations, where maintaining an awareness of the aircraft's impact on surrounding environments is crucial. The value being below 65 MPH indicates that while jet blast at idle is not as forceful as during takeoff or climb phases, it still requires consideration for safety protocols and spacing during ground operations.