The engine has three extensible nozzle expanders displaceably arranged against each other in a longitudinal direction of the engine. Interlinking upper, middle and lower cones (1-3) are lockable with each other in an extended state. Manually lockable locki...

The nozzle cap (12) has a first part (13) fixed to a motor, a relatively moveable second part (14) with larger diameter, and an extension mechanism. This has pivoted extension arms (15), hinged with a first end to a support structure (16a,17a) on the outsi...

The nozzle cap (12) has a first part (13) fixed to the motor, and a relatively moveable second part (14) with larger diameter. A closed volume (15) is charged with a gaseous fluid to move the second part from storage to operational position. The closed vol...