McDonnell Model 119 executive jet prototype......

Caravellarella

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Dear Boys and Girls, here is an article in French about the McDonnell Model 119 executive jet prototype which was the unsuccessful 4-engine contestant in the UTX/UCX competition held by the USAF. It was later redesignated the McDonnell Model 220 ……

The article comes from the 25th April 1959 issue of Les Ailes......

Terry (Caravellarella)
 

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toura

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Hi TERRY
From "aviation week"
 

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Triton

Donald McKelvy
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119/220 (McDonnell 1959)

The four-engine Model 119/220 was the first business, non-airline-type jet aircraft to receive an FAA Class I provisional type certificate as airworthy in the transport category.

Source:
http://www.boeing.com/companyoffices/gallery/hist073b.htm


Three-view drawing of McDonnell 119/220

Source:
http://www.aviastar.org/air/usa/mcdonnell_119-220.php
 

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Triton

Donald McKelvy
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McDonnell Model 119 on display at Edwards Air Force Base in 1959.

Source:
http://www.flickr.com/photos/n303wr/3403637754/sizes/o/in/photostream/
 

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Triton

Donald McKelvy
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There is also an existing topic for the United States Air Force UTX/UCX competition:

"UTX/UCX proposals"
http://www.secretprojects.co.uk/forum/index.php/topic,12087.msg120109.html#msg120109
 

Stargazer2006

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Very nice video Donald, thanks. The McDonnell 220 always struck me as having a poor [number of engines]/[passengers] ratio. Would it have been profitable to operate? I would think not.
 

Sundog

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Stargazer2006 said:
Very nice video Donald, thanks. The McDonnell 220 always struck me as having a poor [number of engines]/[passengers] ratio. Would it have been profitable to operate? I would think not.

Does that mean you can say the same for it's competitor, the Jetstar, which also had four engines?
 

Stargazer2006

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Sundog said:
Stargazer2006 said:
Very nice video Donald, thanks. The McDonnell 220 always struck me as having a poor [number of engines]/[passengers] ratio. Would it have been profitable to operate? I would think not.

Does that mean you can say the same for it's competitor, the Jetstar, which also had four engines?

Good point, though I believe the position of the engines on the JetStar makes it more cost effective because the underwing pods of the McDonnell 220 probably add drag (not too mention the fact that the JetStar's engines being to the rear make it less noisy for the passengers). Or am I getting this wrong?
 

Sundog

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The engines on the 119 will add more surface area. However, placing them on the wing allows the construction of a thinner lighter wing. It would be interesting to see accurate performance data for both aircraft for comparison purposes.
 

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Installing the engines on the wings allows for lighter wings? Wouldn't the wings have to be heavier to support the engines?
 

TAGBOARD

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I believe what Sundog is referring to is a concept called inertia relief. You might Google around for more explanations of the concept, but here's an example:


Sample Page from a Stanford Aircraft Structural Loads Course


This is partly why the spanloader concept is intriguing for aircraft designers as the mass of the airframe, fuel and payload are distributed across the wing span. This creates less of a "cantilever beam" and more of a "simply supported beam" layout. Some other reasons are Swet/Sref ratio (meaning most exposed surfaces are contributing to lift, not drag), no tail surface down force to trim the airfoil nose-down moments that does not contributing to lift and no downwash from the wing on the tail.
 

The Artist

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While looking at the Museum's large Wood 119/220 model, I noticed these little details that I've not seen on the actual aircraft, and don't remember seeing in drawings. Could these overhead windows have been considered for the production aircraft?
 

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Stargazer2006

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The Model 119 contended for UCX, but the similar Model 118 was the UTX contender. Possibly the trainer program required those windows, since they do appear on the competition's winner, the North American Sabreliner? In that case, the basic desktop model would have been the same, with pre-cut windows that could be either removed or painted over? Just my two cents.
 

The Artist

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The Low-Speed wind tunnel model was lowered from the rafters in a school building in St Louis today and is now on a long term loan to the Greater St Louis Air and Space Museum. More pictures will follow - either from me, or from Mark Nankivil.

We figure that's about 45 to 50 years of dust on the thing. A crude first pass at measuring the wingspan showed a span of 86 inches.

Edit: I should mention that the loan is from the St. Louis City Public Schools.
 

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Stargazer2006

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What a remarkable discovery!! And apart from the rudder it seems in pretty good overall condition. Hope it gets the proper attention and display it deserves... Thanks for sharing.
 

Mark Nankivil

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Hi All -

As Mike noted, we recovered the low speed wind tunnel model for the Model 119 which has been hanging in the rafters at the O'Fallon Tech High School (now called Gateway Magnet School) for 50 years. About a year ago, we tracked down the high speed wind tunnel model which had been donated to the University of Michigan. When contacted as to whether they still had it, they graciously donated to the Museum.

This model is in remarkably good shape considering the environment it was in - paints peeling and there's a few cracks but it'll clean up nice and look great restored.

Here's a few more photos from the recovery...

Enjoy the Day! Mark
 

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Mark Nankivil

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...and here are a few photos of the 119 and later, the 220 iteration....

Enjoy the Day! Mark
 

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Stargazer2006

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Thanks a lot Mark. I already knew the Model 119 pics, but I must say the Model 220 pics are new to me.

It was the same prototype repainted and re-registered, wasn't it?
 

Mark Nankivil

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Indeed - an attempt at a "fresh" start for the civil market. Alas, to no avail...

Enjoy the Day! Mark
 

The Artist

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Apparently, it even had a new data plate installed when they changed it over to the Model 220. The Museum has the Model 119 data plate in its collection.
 

The Artist

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The Data plate from the McDonnell Model 119. In the Greater St Louis Air & Space Museum Collection.

The plate for the Model 220 should be still in the aircraft.
 

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hesham

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Hi,


did anyone hear about this project before ?,Avro (Canada) jet transport aircraft,combining
the fuselage of the McDonnell-220 with the wings of De Havilland DH.125 ?.


FR 12/1958
 

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The Artist

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You know, that idea had potential as the first corporate glider. That is unless one, or the other, component were to be redesigned to hold the engines.


hesham said:
Hi,


did anyone hear about this project before ?,Avro (Canada) jet transport aircraft,combining
the fuselage of the McDonnell-220 with the wings of De Havilland DH.125 ?.


FR 12/1958
 

sienar

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From; https://aviationarchives.blogspot.com/2016/09/mcdonnell-model-119220-miscellaneous.html
 

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