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Boeing 727 UDF Test Plane

In the mid 1980s, Boeing used a company-owned 727 to test a new engine for a proposed twin propeller-turbine transport that was to be designated the Model 7-J-7. A prototype General Electric GE-36 UDF (unducted fan or turboprop) engine was mounted on the right rear side in place of the standard turbo jet engine. The UDF engine was a hybrid between a turbofan and a turboprop. It had a significant weight reduction and a 45% increase in fuel efficiency, however, Boeing did not develop the 7-J-7 that was used to test it. 
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Unique identifier BI228807 
Boeing ID p59118 
Type Image 
Size 5100px × 5100px   24MB 
License type RM 
Keywords
1980s
airplanes
commercial passenger planes
Conceptual aircraft, designed, but never produced
copy space
day
engines
exteriors
ground shots
high-tech / advanced
jets
left front views
monoplanes
nobody
one of a kind aircraft
photos
propeller planes
propulsion systems
scanned from film negative
science and technology
sunshine
tarmac
technology demonstrators
testing
three-quarter length views
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