astern propulsion

8 examples (0.03 sec)
  • Info Astern propulsion (as applied to a ship) is a maneuver in which a ship's propelling mechanism is used to develop thrust in a retrograde direction. more...
  • Some aircraft are also able to develop astern propulsion.
  • Two sets of nozzles were provided, one for ahead propulsion and one for astern propulsion.
  • Most mechanically driven land vehicles can develop astern propulsion, although in this case the ability is more usually termed 'reverse'.
  • Some propeller-driven aircraft using controllable pitch propellers can change the blade pitch sufficiently to provide astern propulsion.
  • For a paddle wheel ship, reversing the direction of the paddle will provide astern propulsion.
  • In a sailing ship astern propulsion can be achieved by the appropriate manipulation of the sails.
  • A marine vessel is required to signal that she is operating astern propulsion by either blowing three short, easily audible blasts or by flying the Sierra signal flag (white border with one central blue square).
  • Most jet airliners and some transport aircraft use astern propulsion (more commonly termed 'reverse thrust') to slow down after landing, reducing the load on the wheel brakes and shortening the landing rollout.