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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 
Quiet Technology Demonstrator 2 Nacelle
Quiet Technology Demonstrator 2 Nacelle 
Boeing and Industry Partners Prove Quiet Technologies for Commercial Jets
Boeing and Industry Partners Prove Quiet Technologies for Commercial Jets 
Quiet Technology Demonstrator 2 Test Results
Quiet Technology Demonstrator 2 Test Results 
Sensors on Quiet Technology Demonstrator 2
Sensors on Quiet Technology Demonstrator 2 
777-300ER in Flight with Landing Gear Extended
777-300ER in Flight with Landing Gear Extended 
777-300ER Landing Gear Test
777-300ER Landing Gear Test 
Boeing 777-300ER Replacement Tires for Flight Test
Boeing 777-300ER Replacement Tires for Flight Test 
777-300ER Flight Test Landing Gear Inspection
777-300ER Flight Test Landing Gear Inspection 
Boeing 777-300ER Refused Takeoff Flight Test
Boeing 777-300ER Refused Takeoff Flight Test 
777-300ER Flight Test
777-300ER Flight Test 
A 777-300ER is Prepared for Flight at Edwards Air Force Base, CA
A 777-300ER is Prepared for Flight at Edwards Air Force Base, CA 
Ground Crew Prepares a 777-300ER for Flight at Edwards AFB, CA
Ground Crew Prepares a 777-300ER for Flight at Edwards AFB, CA 
777-300ER in Flight over Mountains
777-300ER in Flight over Mountains 
777-300ER Test Flight Takeoff
777-300ER Test Flight Takeoff 
777-300ER Illustration in Boeing Livery
777-300ER Illustration in Boeing Livery 
777-300ER During Maximum Brake Energy Refused Takeoff Testing
777-300ER During Maximum Brake Energy Refused Takeoff Testing 
777-300ER on Apron
777-300ER on Apron 
777-300ER on Runway
777-300ER on Runway 
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Quiet Technology Demonstrator Two

Equipped with a specially modified engine and packed with microphones and other sound-measuring equipment, this 777-300ER aircraft—the Quiet Technology Demonstrator Two—was the focus of a remarkable collaborative 2005 research and development program. The ultimate goal: to reduce cabin and community noise to the point where it is no longer an issue for passengers or people who live near airports. To combat the sound of jet-blast from the rear of the engine, Boeing, General Electric, and NASA developed serrated edges called chevrons for the back of the nacelle and the engine exhaust nozzle. The chevrons reduce jet blast noise by controlling the way the air mixes after passing through and around the engine. 
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Unique identifier BI232177 
Boeing ID dscf0159a_qtd2 
Type Image 
Size 3024px × 2016px   17MB 
License type RM 
Keywords
2000s
airplanes
AIRPORTS
beauty
blue
brown
close-ups
clouds
commercial
commercial passenger planes
copy space
currently in production
doors
engines
exteriors
flight lines
fuselages
glare
gray
ground shots
half-length views
high-tech / advanced
jets
landing gear doors
landing gears
large
main wheels
monoplanes
nobody
nose gears
orange
other livery
payload systems
perspective lines
photos
propulsion systems
pylons
Quiet Technology Demonstrator Two (QTD2)
right side views
shadows
stairs, lifts and ladders
stairways
structural systems
sunrise
swept wings
tarmac
testing
wheels
windows
Restrictions