UK2 JX485 Consolidated CoronadoGR1 ex USN 7192 PB2Y-3B Helensburgh.jpg

Is that a 3 blade prop and a 4 blader?
Regards

Syke

On 06/10/2013 09:05, Syke wrote:
Is that a 3 blade prop and a 4 blader?
Regards

Syke

Responding to my own question, it seems the answer is, sometimes;

https://www.google.co.uk/search?q=co...=lnms&tbm=isch

But not always;

http://www.aircraftaces.com/photos/pby-coronado-1.jpg

How odd!

Regards

Syke

On Sun, 06 Oct 2013 09:15:53 +0100, Syke
wrote:

On 06/10/2013 09:05, Syke wrote:
Is that a 3 blade prop and a 4 blader?
Regards

Syke

Responding to my own question, it seems the answer is, sometimes;

https://www.google.co.uk/search?q=co...=lnms&tbm=isch

But not always;

http://www.aircraftaces.com/photos/pby-coronado-1.jpg

How odd!

Some interesting history on the Coronado:

http://www.history.navy.mil/branches...ac/pb2y-5r.pdf

Very interesting, especially as the 3-view drawing shows a mix of 3 and
4-blade props. I wonder why this would be?

Regards

Syke

Syke wrote in newsse4u.18783$xL5.844
@fx31.am4:

Very interesting, especially as the 3-view drawing shows a mix of 3 and
4-blade props. I wonder why this would be?

Regards

Syke

The two inner engines were fitted with four-bladed reversible pitch
propellers; the outer engines had standard three-bladed feathering props

REF:
Bridgeman, Leonard. "The Consolidated Vultee Model 29 Coronado". Jane's
Fighting Aircraft of World War II. London: Studio, 1946. ISBN 1-85170-493-0

On Sun, 06 Oct 2013 09:39:21 -0500, John Szalay john.szalayatatt.net
wrote:

Syke wrote in newsse4u.18783$xL5.844
:

Very interesting, especially as the 3-view drawing shows a mix of 3 and
4-blade props. I wonder why this would be?

Regards

Syke

The two inner engines were fitted with four-bladed reversible pitch
propellers; the outer engines had standard three-bladed feathering props

REF:
Bridgeman, Leonard. "The Consolidated Vultee Model 29 Coronado". Jane's
Fighting Aircraft of World War II. London: Studio, 1946. ISBN 1-85170-493-0


Do you know why? Was this for enhanced maneuverability on water?

Lab Lover wrote in
:

On Sun, 06 Oct 2013 09:39:21 -0500, John Szalay john.szalayatatt.net
wrote:

Syke wrote in newsse4u.18783$xL5.844
:

Very interesting, especially as the 3-view drawing shows a mix of 3
and 4-blade props. I wonder why this would be?

Regards

Syke

The two inner engines were fitted with four-bladed reversible pitch
propellers; the outer engines had standard three-bladed feathering
props

REF:
Bridgeman, Leonard. "The Consolidated Vultee Model 29 Coronado".
Jane's Fighting Aircraft of World War II. London: Studio, 1946. ISBN
1-85170-493-0


Do you know why? Was this for enhanced maneuverability on water?



reversible pitch , do make it easier to handle on the ground & water.

ever seen a plane back up ? watched C-130s do it and its impressive.

On Sun, 06 Oct 2013 15:28:36 +0100, Syke
wrote:

Very interesting, especially as the 3-view drawing shows a mix of 3 and
4-blade props. I wonder why this would be?

Regards

Syke


As Szalay pointed out, the 4 bladed props were reversible pitch. I
believe this was done for maneuverability while taxiing.

On 10/6/2013 10:37 AM, Lab Lover wrote:
On Sun, 06 Oct 2013 09:39:21 -0500, John Szalayjohn.szalayatatt.net
wrote:

wrote in newsse4u.18783$xL5.844
@fx31.am4:

Very interesting, especially as the 3-view drawing shows a mix of 3 and
4-blade props. I wonder why this would be?

Regards

Syke

The two inner engines were fitted with four-bladed reversible pitch
propellers; the outer engines had standard three-bladed feathering props

REF:
Bridgeman, Leonard. "The Consolidated Vultee Model 29 Coronado". Jane's
Fighting Aircraft of World War II. London: Studio, 1946. ISBN 1-85170-493-0


Do you know why? Was this for enhanced maneuverability on water?


Just as a wild guess...

It may be that the outboard engines get shut down in flight?
Seaplanes need a LOT of power to get off the water.
But not that much for cruise.