Hamilton Standard Propellers Flashcards
3 Major Assemblies of Hamilton Standard Prop
Hub assembly
Dome assembly
Distributor Valve
What kind of aircraft uses Hamilton Standard Props?
Medium and Large radial engine transport category aircraft
consists of two halves that support the spider the propeller blades and the dome assembly.
The hub or barrel assembly
what permits each blade to rotate freely within the hub, as well as to hold the blades in place?
a combination of bearings and spacers installed between blade butt and the hub
splined to the engine crankshaft and supported in the barrel by the support blocks.
The spider
Why is Hydromatic propellers different from other constant speed propellers?
the butt of each blade consists of a sector gear that meshes with the pitch changing gear in the dome assembly.
acts as an extension to the engine’s crankshaft and is installed in the center of the dome assembly.
distributor valve
purpose of the distributor valve
to direct both governor oil and engine oil into and out of the dome assembly.
houses the primary components of the pitch-change mechanism including a piston a rotating cam and a fixed cam
dome assembly
The Hydromatic propeller uses ______ to feather the blades.
High-pressure oil
why is an oil reservoir and separate electric oil pump are installed in the propeller system?
To ensure an adequate supply of oil and a means to pressurize it
What stops the oil pressure delivery when the blades reaches their fully feathered position?
electric pressure cutout switch
What disables the governor constant-speed functions when the propeller is feathered or unfeathered?
High-pressure transfer Valve
