Early concepts for BAe 146 aircraft

hesham

hesham

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Hi,

here is the early studies and concepts for the BAe 146 aircraft.

http://www.flightglobal.com/PDFArchive/View/1972/1972%20-%202532.html
 

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Im not so sure you know, these look more like the Europlane Quiet Stol project. BAC planned to test some of the high lift devices on a modified 1-11 475 that bore more than a passing resemblance to the forth study (and indeed a 146...)

The BAe 146 (HS146) evolved from numerous Hatfield studies including the DH126, HS131,136 and 144. The whole process is documented in Richard Paynes "Stuck on the drawing board"...

Zeb
 
zebedee said:
The BAe 146 (HS146) evolved from numerous Hatfield studies including the DH126, HS131,136 and 144. The whole process is documented in Richard Paynes "Stuck on the drawing board"...
Click to expand...

Indeed, the four engine, high winged BAe 146 evolved directly from the low winged HS144 twin jet, an evolution forced by the cancellation of the RB.203.
 
It's interesting that some of the studies called for a twin but they went with a quad, especially in light that some of the final BAe-146/AvroJet projects called to revert back to a twin for better fuel efficiency.
 
That 2nd project looks like it would need a lot of vibration damping for the engines, and might be liable to a good deal a fatigue. As for cleaning runways - why bother? It could do that for itself ;D

Starviking
 
Just call me Ray said:
It's interesting that some of the studies called for a twin but they went with a quad, especially in light that some of the final BAe-146/AvroJet projects called to revert back to a twin for better fuel efficiency.
Click to expand...

Engine availability is the often most important design driver. In the absence of the RB.203 Trent, the 4 engine high wing configuration was necessary - although the concept was most certainly influenced by the (apparently mistaken?) belief that there would be a shift to innercity airports for regional traffic.
 
Any guesses as to how effective the Category 1 design would have been as a Boeing or an Airbus competitor?
 
Hi,

I heard that,from the early configurations to BAe 146M was a
a design had the same airframe but powered only by two Rolls-
Royce BR725 engines with a tail mounted one TP400 turboprop
engine,has anyone a drawing to it ?.
 
TinWing said:
Engine availability is the often most important design driver. In the absence of the RB.203 Trent, the 4 engine high wing configuration was necessary - although the concept was most certainly influenced by the (apparently mistaken?) belief that there would be a shift to innercity airports for regional traffic.
Click to expand...

I wonder if it would have been possible to design the wing for 2 or 4 engines?
 
PMN1 said:
TinWing said:
Engine availability is the often most important design driver. In the absence of the RB.203 Trent, the 4 engine high wing configuration was necessary - although the concept was most certainly influenced by the (apparently mistaken?) belief that there would be a shift to innercity airports for regional traffic.
Click to expand...

I wonder if it would have been possible to design the wing for 2 or 4 engines?
Click to expand...

It's possible and Airbus has done it with the A330/A340, which use (to some degree, I'm not sure how much) a common wing. The result is less efficient structurally, and perhaps aerodynamically, than a wing optimized for 2 or 4 engines but the theory was that design, manufacturing and logistics efficiencies would make it worthwhile.
 
hesham said:
Hi,

I heard that,from the early configurations to BAe 146M was a
a design had the same airframe but powered only by two Rolls-
Royce BR725 engines with a tail mounted one TP400 turboprop
engine,has anyone a drawing to it ?.
Click to expand...

Hi,

here is a shadow to BAe 146M.
 

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Hi,

http://archive.aviationweek.com/search?exactphrase=true&QueryTerm=LIFT-FAN&start=280&rows=20&DocType=Image&Sort=&SortOrder=&startdate=1916-08-01&enddate=1989-11-27&LastViewIssueKey=&LastViewPage=
 

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About those Europlane studies in post #1 ... on page 2529 if the 21 Sept 1972 Flight, twin RB.211s are mentioned. I assume that to refer to the 'Category 1' concept with 45,000 lbf engines. But what RB211 variant was available in 1972 with that power output?
 
From a recently acquired brochure for the military HS146 dating from 1977... Some interesting images of the rear loading version including carriage of a CVR(T)... Of note is the Manchester Divisions involvement in its development (see also AW681 & HS802)

Zeb
 

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Some more...
 

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From Aviation magazine 1977.
 

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