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Author Topic: Various Bell projects  (Read 14935 times)

Offline Jemiba

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Various Bell projects
« on: December 23, 2006, 04:26:28 am »
A more elegant, nevertheless quite unusual concept fom Bell:
A tandem stowable rotor.

(from AviationWeek 5/67)
« Last Edit: October 27, 2012, 02:06:20 pm by Stargazer2006 »
It takes a long time, before all mistakes are made ...

Offline hesham

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Re: Various Bell projects
« Reply #1 on: December 25, 2006, 09:45:34 am »
Thanks my dears,

and there was also retractable rotors from Sud Aviation.
« Last Edit: October 27, 2012, 01:36:49 pm by Stargazer2006 »

Offline yasotay

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Re: Various Bell projects
« Reply #2 on: December 25, 2006, 08:17:31 pm »
I would be very interested in any information or pictures that anyone might have regarding the Bell Ducted fan efforts.

Offline hesham

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Re: Various Bell projects
« Reply #3 on: December 26, 2006, 10:18:34 am »
Thanks my dear Jemiba,

and do you know Bell D-196 ?.

Offline yasotay

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Re: Various Bell projects
« Reply #4 on: December 27, 2006, 12:00:06 pm »
jemiba- Thanks!  I had not seen that concept before. Of all the Commercial VTOL concepts I have seen over the years, the D-2240 seems to be one that might actually have met with passenger acceptance.  It does not have the look of an aircraft with lots of moving parts etc., that seems to be crucial to passenger acceptance.  Of course it is doubtful that the technologies of the mid-60's would have allowed for the crucial cost per seat/mile to be realized to make the aircraft finacially viable.

Offline Jemiba

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Re: Various Bell projects
« Reply #5 on: December 27, 2006, 12:13:04 pm »
"..and do you know Bell D-196 ?"

Sorry, I don't know this designation, but many projects were just published
with designations as "transport with tiltable ducted fans" or something like
that. If you can describe the D-196, maybe we find a project, that fits into
this description.   ;)
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Offline lark

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Re: Various Bell projects
« Reply #6 on: January 01, 2007, 02:38:06 pm »
Breathtaking Orion..
Can jou give us more info of the book ?

Thanks.

Offline yasotay

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Re: Various Bell projects
« Reply #7 on: January 05, 2007, 06:08:38 am »
Obrienblam(2) -  Thank you for the fantastic info.  The chart alone was a tremendous surprise.  I was not aware of two thirds of the concepts on the diagram.

A question for the veterans here.  When doing the patent search, do you go with specific nomenclature, or is a 'hit or miss' ordeal?  I tried to search specific nomenclature for the designs from Obrienblamblam's chart post to no avail. While 'ducted fan' and 'four post ducted fan' bring up some aircraft, I have not found many of the designs.  I assume they never progressed to patent stage or I am missing the mark.

Thanks in advance.

Offline Orionblamblam

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Re: Various Bell projects
« Reply #8 on: January 05, 2007, 06:35:15 am »
I tried to search specific nomenclature for the designs from Obrienblamblam's chart post to no avail. While 'ducted fan' and 'four post ducted fan' bring up some aircraft, I have not found many of the designs. 

These are Design Patents. As such, the patent contians naught but the basic drawings... and has a very basic title. For instance, as memory serves, both of these patents were titled "Aircraft."

I'm finding google Patents to be both very useful... and very limitted. One patent that I had a photocopy of (from the Denver public library, pre-Web days of manual searching of microfilm) was a Bell Aircraft patent for a VTOL tailsitter fighter from WWII; I had misplaced the copies, and decided to use Google to hunt it down, based on the few snippets of info that I could recall. A few days of searching failed to turn it up. I finally located the paper copy, and then went back to Google: even with a patent number search... Google couldn't find it. The patent office server had the patent, but Google does not. Strange. I can only assume that there are a *lot* of gaps.
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Offline hesham

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Re: Various Bell projects
« Reply #9 on: January 05, 2007, 08:45:11 am »


Thanks my dears about all informations and drawings.

Offline yasotay

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Re: Various Bell projects
« Reply #10 on: January 05, 2007, 11:18:31 am »
Thanks for the reply.  I suspected something of the sort as you suggest might be one of the possiblilities as the service is relatively new.

Offline Orionblamblam

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Re: Various Bell projects
« Reply #11 on: January 05, 2007, 04:21:52 pm »


Thanks my dears...


Erm... unless you are female, that just comes across... kind of creepy.
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Offline PaulMM (Overscan)

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Re: Various Bell projects
« Reply #12 on: January 05, 2007, 06:00:55 pm »


Thanks my dears...


Erm... unless you are female, that just comes across... kind of creepy.

I suspect English is not his first language.
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Offline hesham

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Re: Various Bell projects
« Reply #13 on: January 06, 2007, 09:26:33 am »
Ok my dears,

I left the English language in 1983,excuse me.

The Bell D-318 was also designed for LAMPS program (Light Airborne Multi-Puropose
System) as Boeing-Vertol BV-237,do you have a drawing to this project ? please.

Offline hesham

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Re: Various Bell projects
« Reply #14 on: April 01, 2007, 10:44:25 am »
Hi,

I heard that the Bell D-137 was a fighter project,
is that right ? please help.