Air brake

Air brake may refer to:

• Air brake (aeronautics), a type of flight control system used on aircraft to reduce speed
• On ground vehicles, <small>(more formally, specified as)</small> compressed-air-actuated braking systems:
• Air brake (road vehicle), friction-mediated type of brake used on large road vehicles in place of hydraulic brakes
• Railway air brake (used on both locomotives, and on towed or pushed cars)