Skip to main content

NASA Testing New Super Quiet, Supersonic Passenger Jet Design

By

Eleven months after NASA said it was working on a quieter, “low boom” supersonic passenger jet that could travelers around the world in a matter of hours, the agency says it has started testing the plane with Lockheed Martin.

NASA is testing a scale model of the Quiet Supersonic Technology (QueSST) X-plane that is 9% of the real plane’s size in a wind tunnel at its Glenn Research Center in Cleveland, the agency says.

During tests over the next eight weeks, engineers will expose the model to wind speeds ranging from Mach 0.3 to Mach 1.6 (approximately 150 to 950 mph).

“We’ll be measuring the lift, drag and side forces on the model at different angles of attack to verify that it performs as expected,” said aerospace engineer Ray Castner, who leads propulsion testing for NASA’s QueSST effort. “We also want to make sure the air flows smoothly into the engine under all operating conditions.”

NASA says recent research shows it’s possible for a supersonic airplane that, when flying faster than the speed of sound, will form shock waves that result in a ground level sound “so quiet it will hardly be noticed by the public, if at all.”

That booming noise is the reason why the now-retired Concorde was prohibited from flying over the United States. Flying at speeds in excess of 1,300 mph, the Concorde could make it across the Atlantic in 3.5 hours.

“Our design reduces the airplane’s noise signature to more of a ‘heartbeat’ instead of the traditional sonic boom that’s associated with current supersonic aircraft in flight today,” said Peter Iosifidis, QueSST program manager at Lockheed Martin Skunk Works.

NASA says it expects the QueSST X-plane “to pave the way for supersonic flight over land in the not too distant future.”


by Mary Beth Quirk via Consumerist

Comments

Post a Comment

Popular posts from this blog

Chrysler Deletes Its Dating Apps, Decides To Remain Single For Now

By
They say you can’t have a healthy relationship until you’re happy with yourself. That appears to be the new mantra for Fiat Chrysler: After several attempts to woo General Motors and more recently Volkswagen , the carmaker’s top executive says he plans to ditch his lovelorn ways to concentrate on his company’s bottom line.  Bloomberg reports that CEO Sergio Marchionne has turned his focus to eliminating FCA’s debt rather than eliminating its single status. Marchionne has set a goal of erasing FCA’s debt by 2019, the same year he’s set to retire. To do that, he says the company needs to do a little work on itself. “We need to be very careful that we don’t start unrealistic dreams about consolidation as we are on our way to achieve historically important results and a debt-free position,” Marchionne told investors at the carmaker’s annual meeting in Amsterdam, as reported by Bloomberg. “We are not at a point of time to discuss any alliance.” Yes, you heard that right: The man w...
Post a Comment
Read more

Study Claims 43% Of “Wild” Salmon In Stores & Restaurants Isn’t Wild At All

By
That wild salmon entrée calling to you from the menu at dinner might not be all it’s advertised. In fact a new study released Wednesday found evidence of mislabeling in nearly half of all salmon sold in restaurants and grocery stores.  The study [ PDF ] from international environmental advocacy group, Oceana, analyzed 82 salmon samples from restaurants and grocery stores, finding that 43% of the products were mislabeled. DNA testing confirmed that 69% of the mislabeled product consisted of farmed Atlantic salmon being sold as wild-caught product. According to the report, consumers satisfying their salmon craving in restaurants are misled about 67% of the time, while those who buy their seafood in a grocery store are misled 20% of the time. “Americans might love salmon, but as our study reveals, they may be falling victim to a bait and switch,” Beth Lowell, senior campaign director at Oceana, said . “When consumers opt for wild-caught U.S. salmon, they don’t expect to get a far...
Post a Comment
Read more

Introduction to Biology (IX Biology Notes Chapter 01)

By
Science: Our universe operates under certain principles. For understanding of these principles, the experiments are done and observations are made; on the basis of which logical conclusions are drawn. Such a study is called "Science". In brief science is the knowledge based on experiments and observations. Biology: The Scientific study of living organisms is called Biology. The word biology is derived from two Greek words "bios" meaning life and "logos" meaning thought, discourse, reasoning or study. It means that all aspects of life and every type of living organism are discussed in biology. Branches of Biology: Biology is divided into following branches: Morphology The study of form and structure of living organisms is called morphology. It can be further divided into following two parts: 1. The study of external parts of living organism is called external morphology. 2. The study of internal parts of living organism is calle...
Post a Comment
Read more