FAA prepares the future of supersonic commercial flights
Fast is nice, quiet is better. The Federal Aviation Administration is preparing the future of supersonic commercial flights in the United States by proposing new rules for noise certification.
On March 30, 2020, the FAA published a Notice of Proposed Rulemaking (NPRM) regarding noise standards of supersonic airplanes during landing and takeoff. The new regulation would see the adoption of an additional noise category specifically for supersonic airplanes.
While commercial supersonic flights ceased in 2003 after the career of the Concorde came to an abrupt end, the idea came back into fashion in recent years. No less than three companies, namely Boom Supersonic, Aerion and Spike Aerospace, are trying to reintroduce supersonic airliners.
However, the U.S. law currently forbids flying over land at a speed superior to Mach 1 (1234,8 km/h) without a special authorization provided by the FAA. Hence the need for new regulations if a company is to operate regular supersonic flights. Noise was one of the main drawbacks of the Concorde, which prevented it from flying across the U.S. and European airspaces and confined it to transatlantic flights.
To help the U.S. companies test their unique aircraft, in parallel of the NRPM on noise levels, the FAA will attempt to “streamline and clarify the procedures to obtain special flight authorization for conducting supersonic flight-testing in the United States,” the agency announced.
The goal is now to make a supersonic aircraft as quiet as possible, using new engines and airframe designs that manufacturers believe will drastically reduce the sonic boom.
NASA along with Lockheed Martin has been working on its own aircraft, the X-59 QueSST. It claims that the sonic boom should create a sound about “as loud as a car door closing”: that of 75 Perceived Level decibels (PLdB). In comparison, the sonic boom of the Concorde was at 105 PLdB. Assembled in 2020, this aircraft will make its first test flights in 2021.
Giving a new birth to supersonic commercial flights is one of the U.S. Department of Transportations (DOTs) priorities on transportation innovation, states the FAA. All three companies mentioned above have received orders for their aircraft and hope to start delivering them in the mid-2020s.
Rolls-Royce to invest £80M in electric aircraft energy storage development
Rolls-Royce will invest £80 million into the development of energy storage systems that will enable electric aircr...
CFM to develop new engine for upcoming generation of narrowbodies
GE Aviation and Safran launch the CFM RISE program to develop a new generation of sustainable engines....
Airbus opens two plants to produce hydrogen cryogenic tanks
Airbus will open two “Zero-Emission Development Centers” in Germany and France to manufacture cryogenic tank...
Future with eVTOL: Virgin Atlantic & American Airlines order 400 electric plane
A British air carrier Virgin Atlantic and the American air carrier American Airlines (A1G) (AAL) signed two separate pur...