Author Topic: Lauhof's profiles  (Read 178072 times)

Offline Tophe

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Re: Lauhof's profiles
« Reply #725 on: July 06, 2016, 12:18:46 AM »
Thank YOU, Master Inventor!

Offline lauhof52

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Re: Lauhof's profiles
« Reply #726 on: October 23, 2016, 11:14:04 PM »
Took me a while but I still had to finish the SB2C-line. After  WWII several E-variants were sold to allied nations. New Zealand bought the SB3C-3E for patrol-duties. here is one from the 4th Squadron :


Several SB3D's were also used in the Korean-war. here is one from VC-12:


friendly regards
Lauhof
« Last Edit: October 24, 2016, 12:51:36 AM by lauhof52 »

Offline Tophe

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Re: Lauhof's profiles
« Reply #727 on: October 24, 2016, 12:35:05 AM »
Interesting new versions, thanks! :-*

Offline lauhof52

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Re: Lauhof's profiles
« Reply #728 on: June 05, 2017, 04:09:16 AM »
Thank you Tophe. Been away awhile

Bell lost the competition with his Airabonita to the Vought F4U-1. One of the reasons was that the US Navy didn't want liquid-cooled engines, but this appeared to be an unfounded speculation. the Allison engine had only a single-speed supercharger. Consequently, its altitude performance was much inferior to other naval fighters of the period. Lastly, the Airabonita had to compete against the considerably faster and quicker Vought F4U Corsair, the first U.S. Navy fighter to exceed 400 mph (644 km/h) in level flight. But Bell didn't give up and with the war at hand needing more plants to build planes for the Pacific Theatre, they hired engineers from Republic to rebuild the XFL-1 with the R-2600 cyclone engine. It became the F2L-1. They did widen the fuselage and gave the cowling an elliptical shape, same as the P-47. By the tests they had to shorten the fuselage a bit to overcome some balancing-problems. But by then the prototype was fit to do some carrier-operation tests and succeeded. Bell was given the contract for building the F2L. End of 1943 and beginning of 1944 they were delivered to carrier-squadrons in the pacific.
Here are two of them:






friendly regards
Lauhof

« Last Edit: June 05, 2017, 03:43:36 PM by lauhof52 »

Offline AXOR

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Re: Lauhof's profiles
« Reply #729 on: June 05, 2017, 06:38:54 PM »
That look nice !
Alex

Offline Tophe

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Re: Lauhof's profiles
« Reply #730 on: June 06, 2017, 12:23:12 AM »
Good!  :-*  Could you show us the in-line source to compare? (centering and all)
The best would be a twin-Airabonita profile: radial front, in-line rear... as an Airabonita Zwilling, asymmetric!

Offline lauhof52

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Re: Lauhof's profiles
« Reply #731 on: June 06, 2017, 03:20:11 AM »

Offline lauhof52

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Re: Lauhof's profiles
« Reply #732 on: June 06, 2017, 03:21:25 AM »
Good!  :-*  Could you show us the in-line source to compare? (centering and all)
The best would be a twin-Airabonita profile: radial front, in-line rear... as an Airabonita Zwilling, asymmetric!

Hi Tophe,

Something like this: The F3L twin

friendly regards
Lauhof

Offline apophenia

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Re: Lauhof's profiles
« Reply #733 on: June 06, 2017, 05:59:37 AM »
Oooo ... your F2L-1 is really nice  :)  Now I'm wondering about an F3L with the Airacobra's tricycle landing gear ...
"How many moles do you suppose they're keeping?;
Don't make a sound they're not dead, just sleeping"

Offline Tophe

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Re: Lauhof's profiles
« Reply #734 on: June 06, 2017, 10:39:50 AM »
Something like this: The F3L twin
Very lovely, thanks a lot! :-* :-*

Offline lauhof52

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Re: Lauhof's profiles
« Reply #735 on: June 06, 2017, 08:27:48 PM »
Thank you Guys!... and Apophenia maybe an F3L...

Offline lauhof52

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Re: Lauhof's profiles
« Reply #736 on: June 24, 2017, 03:30:35 AM »
Boeing wanted a successor for the P-26 and came with the YP-29 for testing. A slightly different version was send as the XF7B-1 to the US Navy, because Boeing was the dominant deliverer of fighter and bombing aircraft for the navy carriers before Grumman took over. Because of the fact that the Grumman designs were biplane versions and the P-26 and YP-29 were monoplanes, the US Navy was very interested. But due to high speed, instability and visibility problems the Navy decided the XF7B-1 was unfit for carrier duties and cancelled the collaboration end of 1934.

In the summer of 1935 Boeing came back with a modified XF7B-1, different canopy, longer fuselage. At the same time they brought a two seated scout-fighter version from the YP-29 as the XSF7B-1. Although there were still problems with the speed handling, Boeing was contracted for 30 F7B-1, mostly delivered to ground stationed squadrons in 1936 (the navy wanted badly to have a monoplane) . In 1938 several were send to carrier squadrons after satisfied trials. More fond were the pilots of the SF7B-1 and it was send to carrier scout-squadrons. An SF7B-2 version as scout bomber monoplane was delivered in 1938 but was already redundant for the arrival of the SB2U vindicator and Douglas TBD-1 devastator. Only one squadron was equipped with the SF7B-2 at Pearl Harbour. Several pilots were still flying F7B-1’s when in 1941 war broke out due to the attack on PH. In the beginning of 1942 all F7B-1’s were exchanged for F4F wildcats. Several SF7B-1 scoutplanes were used for training

Here are the three different types of the originated YP-29

Regards
Lauhof
« Last Edit: June 24, 2017, 04:15:43 AM by lauhof52 »

Offline Tophe

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Re: Lauhof's profiles
« Reply #737 on: June 24, 2017, 08:57:23 PM »
My favorite :-* is the single seater, even if the whole family is pleasant! ;)

Offline lauhof52

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Re: Lauhof's profiles
« Reply #738 on: June 25, 2017, 01:15:55 AM »
My favorite :-* is the single seater, even if the whole family is pleasant! ;)

Thanks Tophe!
Project was lying on the shelf for more than two years. Love the SF2B-1 myself.

regrads
Lauhof

Offline AXOR

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Re: Lauhof's profiles
« Reply #739 on: June 25, 2017, 06:36:37 AM »
Yes,F7 B1 is on my taste .
Alex

Offline lauhof52

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Re: Lauhof's profiles
« Reply #740 on: July 07, 2017, 08:00:46 PM »
Thanks Alex!

On to another old subject: The story is based on the idea and story from Dizzyfugu who built a model of the FK60.
N.V. Koolhoven was an aircraft manufacturer based in Rotterdam, Netherlands. In May 1940, Koolhoven’s engineers escaped and remained active in England. Together with the Desoutter-company they built the biplane fighter FK-52C . Which I exposed early in one of my threads.
At the moment of the invasion of German forces in 1940 Koolhoven’s FK-58 single-seat monoplane was at the front in France en Holland. The successor FK-60, which had been on the drawingboard was built in England by Koolhoven and Desoutter in Croydon, Surrey.
The FK-60 had been designed with a more powerful armament, but needed a more powerful engine for duty-tasks in the Netherlands East Indies. So it was powered with the Wright-Cyclone R.1820 engine.
Flight tests with the modified prototype, started in November 1941 proved to be promising. Speed and handling at low altitude was very good.
The new Dutch fighter came just in time: On 1 January 1942 the Dutch forces joined the American-British-Dutch-Australian Command, but at the onset of the Japanese assault the ML-KNIL was not up to full combat strength. Production of the FK-60 was immediately taken up and the airframes transported by ship to the Dutch New-Guinea theatre.
In 1943, 120 (NEI) Squadron was established. Equipped with Kittyhawk fighters and the newly arrived FK-60 fighters, it flew many missions under Australian command, including the recapturing of Dutch New Guinea.
Here are two examples. One ML-KNIL version and one RAAF one.

regards
lauhof
« Last Edit: July 07, 2017, 08:07:46 PM by lauhof52 »

Offline Old Wombat

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Re: Lauhof's profiles
« Reply #741 on: July 07, 2017, 10:28:41 PM »
I like this one! :) 8)
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline lauhof52

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Re: Lauhof's profiles
« Reply #742 on: July 07, 2017, 11:35:55 PM »
Thank you!

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Re: Lauhof's profiles
« Reply #743 on: July 08, 2017, 03:58:57 AM »
 :)
All hail the God of Frustration!!!

You can't outrun Death forever.
But you can make the Bastard work for it.

Offline Tophe

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Re: Lauhof's profiles
« Reply #744 on: July 08, 2017, 10:40:50 AM »
I love your FK-60 :-* so harmonious silhouettes...
They remind me the Curtiss XP-60C
https://en.wikipedia.org/wiki/Curtiss_P-60#/media/File:Curtiss_XP-60C_in_flight,_modified_from_second_XP-60A._061024-F-1234P-018.jpg
but better ;)

Offline lauhof52

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Re: Lauhof's profiles
« Reply #745 on: July 08, 2017, 03:10:04 PM »
:)

Thank you!

I love your FK-60 :-* so harmonious silhouettes...
They remind me the Curtiss XP-60C
https://en.wikipedia.org/wiki/Curtiss_P-60#/media/File:Curtiss_XP-60C_in_flight,_modified_from_second_XP-60A._061024-F-1234P-018.jpg
but better ;)

Thanks Tophe! Better than the XP-60... 8)

regards
lauhof

Offline AXOR

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Re: Lauhof's profiles
« Reply #746 on: July 08, 2017, 06:32:08 PM »
Alex

Offline lauhof52

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Re: Lauhof's profiles
« Reply #747 on: July 09, 2017, 03:06:38 AM »

Offline apophenia

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Re: Lauhof's profiles
« Reply #748 on: July 11, 2017, 02:48:06 AM »
Excellent stuff! And I love the Desoutter tie-in. I guess that makes the F.K.60 the Desoutter III ?

BTW, does anyone know when Desoutter Tools moved to France?
"How many moles do you suppose they're keeping?;
Don't make a sound they're not dead, just sleeping"

Offline lauhof52

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Re: Lauhof's profiles
« Reply #749 on: July 13, 2017, 10:27:47 PM »
Excellent stuff! And I love the Desoutter tie-in. I guess that makes the F.K.60 the Desoutter III ?

BTW, does anyone know when Desoutter Tools moved to France?

Thanks Apophenia!
Desoutter Tools was founded in 1914 in England as Desoutter Bros Ltd. The Desoutter aircraft company, who manufactured the Desoutter II was founded in England, Croydon in 1928 by Marcel one of the brothers. Desoutter Tools went to Hendon in 1924. Already George Renault was making the same tools in France. In 1989 George Renault joines Desoutter. So it could be around that time the company moved to France with their headquarter.

regards
Lauhof
« Last Edit: July 14, 2017, 07:57:00 PM by lauhof52 »