The invention provides a propeller device (10) for aircraft, spacecraft or watercraft comprising two or more blades (11) and a spinner (21). The blades (11) are arranged on a hub (13) so that they can be in a deployed or a retracted position. The spinner (21) comprise first, second and third movable portions (23, 25, 27) configured for allowing deploying or retracting the blades (11) and for keeping the blades (11) deployed or retracted.
RETRACTABLE PROPELLER DEVICE FOR AIRCRAFT, SPACECRAFT OR WATERCRAFT
EINKLAPPBARE PROPELLERVORRICHTUNG FÜR FLUGZEUG, RAUMFAHRZEUG ODER WASSERFAHRZEUG
DISPOSITIF À HÉLICE RÉTRACTABLE POUR AÉRONEF, ENGIN SPATIAL OU NAVIRE
2018-05-09
Patent
Electronic Resource
English