50 SKY SHADES - World aviation news

How to go supersonic without a boom

Download: Printable PDF Date: 23 Dec 2016 13:51 category:
Publisher:
How to go supersonic without a boom - Maintenance / Trainings publisher
Krista Kuznecova
Aircraft: Airplanes
Source: Popular Science

Until its retirement 13 years ago, the supersonic Concorde was plagued by two major problems: inefficiency and noise (the sonic booms it produced got it banned from over-land cruising). Now, heavyweights like Virgin and Airbus are planning to tackle supersonic speeds, and NASA began designing a “low boom” supersonic jet this year. But no one is as close as aircraft manufacturer Aerion Corporation, which is developing the AS2.

Quiet Cruise

When air molecules slam into a supersonic jet, they create a high-pressure wake that reaches the ground as a startling “ba-boom.” By slowing down its cruise speed to Mach 1.2 (the Concorde’s was Mach 2), the AS2’s wake will dissipate before it reaches civilization.

Straight and Carbon-Strong Wings

Typical supersonic wings sweep back to create a triangular shape. That design creates lift—but also drag-producing air eddies toward the back of the wings. The AS2’s wings jut straight out from the fuselage and, thanks to ultrastrong carbon fiber, have a thinner contour. This lets air travel in straighter lines, reducing overall drag by about 20 percent.

Pinch Point

The AS2’s 170-foot-long fuselage pinches in at the wings, creating an elongated Coke-bottle shape. This allows for smoother airflow around the body while still providing room in the cabin for passengers and crew.

Off-the-Shelf Engines

Instead of building expensive custom engines, Aerion plans to adapt commercially available ones for supersonic flight. The engineers will reduce the diameters of the big engines’ fans so their sound at takeoff and landing will meet airport noise standards—without losing the power needed to achieve supersonic flight.



Loading comments for How to go supersonic without a boom...


Recommended

Dassault launches new business jet with termination of Silvercrest contract and 5X programme

Dassault Aviation initiates the termination process of the Silvercrest contract leading to the end of the Falcon 5X program and announces the launch of a new Falcon program with an entry into service...

Zhukovsky International Airport can become a "bridge" between China and Russia

Zhukovsky International Airport and Pegas Fly airline announce the launch of a large-scale program to support Chinese tourism in the Russian Federation and the launch of a flight on the route Jinan (P...

Garmin® introduces industry-first, all-in-one portable ADS-B and SiriusXM Aviation receiver

Garmin International Inc., a unit of Garmin Ltd.announced the GDL 52/51, a series of portable receivers that are capable of receiving Automatic Dependent Surveillance-Broadcast (ADS-B) traffic and wea...

Delta Air Lines places order for 100 A321neo ACF aircraft

Underscores airline’s confidence in Airbus single-aisle family Delta Air Lines placed an order with Airbus for 100 of the manufacturer’s modern A321neo ACF (Airbus Cabin Flex configurat...