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General Forums => Aces High General Discussion => Topic started by: Fastbikkel on April 20, 2001, 12:38:00 AM

Title: Feather prop in p-47
Post by: Fastbikkel on April 20, 2001, 12:38:00 AM

A couple of days ago i was reading some comics from ww2. I saw something there that realy surprised me.
One comic was making a joke about feathering a p47. The pilot made clear that the p47 could not do that.

I was convinced that the p47 could do this.

Does anyone know if a jug can feather its props. I can hardly believe that it cannot feather its prop. It was a modern aircraft.

Hope to hear from you guys,

FB.

Title: Feather prop in p-47
Post by: ra on April 20, 2001, 08:50:00 AM

I thought feathering was mainly a feature of multi engine planes.

ra

Title: Feather prop in p-47
Post by: Jigster on April 20, 2001, 12:19:00 PM

AFAIK alot of the varible pitch prop planes could be feathered...but only while there was still power/hydrolic pressure (depending on the hub) to do so. Due to more then one engine, redundent systems, etc, multiengine planes were much easier to feather before or after engine failure.

Title: Feather prop in p-47
Post by: EDO43 on April 20, 2001, 03:38:00 PM

The P47D's mostly(with the exception of a production block or two) came with Curtiss Electric propellors.  With respect to feathering props, why would you want to feather a prop that has only one engine?  A Prop is feathered to decrease the air resistance on the airframe and make it easier to keep control of. It also prevents the engine from destroying itself by windmilling.  If you only have one engine and it stops, you're going down anyway...no need to feather it.

Feathering propellors are installed on multiengined aircraft only.  Hydraulic or electric, either  can be feathered if the right components are incorporated into the engine/prop combination.  (P&W PT-6 engined aircraft excepted from the above as it is a free turbine engine and the prop always goes to feather when its not running)

[This message has been edited by EDO43 (edited 04-20-2001).]

Title: Feather prop in p-47
Post by: Midnight on April 20, 2001, 07:35:00 PM

Feathering the prop is a good way to maintain glide speed if you run out of gas or have to shut down the engine to prevent an over-heat. Feathering the prop in AH can be very handy.

------------------
Midnight CO
412th FG "Nightmare Mustangs"[/i]

"You tell them I'm coming.. And Hell's coming with me!" -Kurt Russel Tombstone

Title: Feather prop in p-47
Post by: Toady on April 20, 2001, 10:59:00 PM

what's feathering ?    (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)

Title: Feather prop in p-47
Post by: Maverick on April 21, 2001, 12:14:00 AM

 

Quote

Originally posted by Toady:
what's feathering ?     (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)

Feathering is turning the blades of the propeller edge on to the wind or stream of air passing by the plane. Example, look at a turbo prop plane after it's engine is shut down and you will see the propeller blades are turned edge forward to the front of the plane perpendicular to what they are in flight.

Feathering a single engine plane other than for a specialty purpose like a motorized glider isn't worth the hassle of the design problems. If your prop feathered in a regular plane on shut down and you had insufficient battery to restart you will remain a glider.

Mav

Title: Feather prop in p-47
Post by: strk on April 21, 2001, 11:45:00 PM

Feathering allows the pilot to adjust the angle of the prop blades.  DIfferent settings are used for takeoff, climb and cruise speed.  In multi-engine planes when on engine is lost, it can be feathered to stop the prop turning (there may be some kind of brake or clutch mech on twins/multis to stop the prop spin completely, Im not sure), which makes the plane easier to fly with one engine out.  

strk