Sax40

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Sax-40
By Ruth Schamberg

• The Silent Air Initiative

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What does the concept design look like

• The Sax-40 will hold an estimated 149 passengers
  to 215 passengers
• This aircrafts sound is predicted as 63 dba
• The Sax-40 has a blended wing shape

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1. Airframe2. Engines3. Exhausts4.
Undercarriage5. Trailing edge6. Leading edge
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Why does the Sax-40 design look the way it does

• Less Pollution
• Noise
• Air
• More fuel efficient

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What makes the Sax-40 so quiet

• Exhaust
• The long exhaust ducts have acoustic liners to
  dampen noise
• The size of the exhaust nozzles can be made
  smaller during takeoff to reduce noise or larger
  while cruising for fuel efficiency.
• Airframe
• Instead of noisy flaps, a sloped wing and steep
  landing angle do the braking
• Engines are embedded in the frame, with air
  intakes on top, reduce drag and noise.

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What make the Sax-40 so quiet Continued

• Wheels
• An aerodynamic fairing around the SAX-40s wheels
  redirects the airflow and reduces drag.
• Engine
• Three radial-blade fans per turbine move large
  volumes of air at low and quiet speeds.

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What is the estimated fuel burn
Note This table uses UK gallons
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What are the major design features

• The aircraft is an all-lifting design,
  producing lift on the centre-body as well as the
  wings.
• The airframe makes use of a novel centre-body
  shape with leading edge carving.
• No need for a tail

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The Engine

• The aircraft has three novel engines
• The engine type is called GRANTA 3401
• Each engine has a single core, driving three high
  capacity low speed fans.
• The Sax-40 has an engine length of 2.46 meters

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The Engine Design

• axial-radial compressor
• extensive acoustics liners
• variable area nozzle
• low noise 5 stage Low Pressure Turbine
• transmission system
• 3 high capacity low speed Fans

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The Sax-40 Compared to the Boeing 747
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Sources

• http//www.techfresh.net
• http//www.diseno-art.com
• http//www.popsci.com
• http//www.wired.com
• http//web.mit.edu