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MD-80
MD-80 
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MD-83 Profan Test with UHB P&W Allison Engine
MD-83 Profan Test with UHB P&W Allison Engine 
MD-83 Profan Test with UHB P&W Allison Engine
MD-83 Profan Test with UHB P&W Allison Engine 
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine 
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine 
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine 
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine
MD-83 Profan Test with Ultra-High Bypass (UHB) P&W Allison Engine 
Quiet Technology Demonstrator Two, QTD2, Landing Gear with  Tobbogan Fairings
Quiet Technology Demonstrator Two, QTD2, Landing Gear with Tobbogan Fairings 
Quiet Technology Demonstrator Two, QTD2, Landing Gear with  Tobbogan Fairings
Quiet Technology Demonstrator Two, QTD2, Landing Gear with Tobbogan Fairings 
Second Boeing-built X-37B Orbital Test Vehicle Completes first flight
Second Boeing-built X-37B Orbital Test Vehicle Completes first flight 
757 Flying Testbed (FTB) in Flight
757 Flying Testbed (FTB) in Flight 
757 Flying Testbed (FTB) in Flight with F-22 Raptor Shadow
757 Flying Testbed (FTB) in Flight with F-22 Raptor Shadow 
757 Flying Testbed (FTB) in Flight
757 Flying Testbed (FTB) in Flight 
Second Boeing-built X-37B Orbital Test Vehicle Completes first flight
Second Boeing-built X-37B Orbital Test Vehicle Completes first flight
757 Flying Testbed (FTB) with F-22 Radar Nose and Sensor Wing
757 Flying Testbed (FTB) with F-22 Radar Nose and Sensor Wing 
757 Flying Testbed (FTB) in Flight
757 Flying Testbed (FTB) in Flight 
Quiet Technology Demonstrator Two
Quiet Technology Demonstrator Two 
X-37 NASA Reusable Space Plane
X-37 NASA Reusable Space Plane 
Boeing-built X-37B Orbital Test Vehicle at Astrotech Launch Processing Facility
Boeing-built X-37B Orbital Test Vehicle at Astrotech Launch Processing Facility 
Airborne Optical Adjunct
Airborne Optical Adjunct 
Launch Processing the Boeing-built X-37B Orbital Test Vehicle
Launch Processing the Boeing-built X-37B Orbital Test Vehicle
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MD-83 Profan Test with UHB P&W Allison Engine

In the 1980s, Douglas modified the MD-80 prototype, turning it into a testbed for ultra-high-bypass (UHB) engines made by both General Electric and Allison. Propfan engines were substituted for rear-mounted turbofan engines. The technology had great potential for fuel economy, but steady fuel prices of the 1980s, and concerns about the potential for difficult engine maintenance and a lack of public acceptance for turbo-fan powered jetliners ended development of the MD-80 turbofan. 
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Unique identifier BI227865 
Boeing ID l9-04870 
Type Image 
Size 5400px × 5400px   83MB 
License type RM 
Keywords
1970s
air to air
airplanes
brown
commercial
commercial passenger planes
day
exteriors
flying
full body views
gray
haze
jets
left rear views
MD-83 Propfan Test
monoplanes
mountains
muted colors
nobody
other livery
out of production
photos
propeller planes
rear views
scanned from film negative
science and technology
snow
sunshine
testing
text
viewed from above
white
wilderness
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