> Boeing believes mach 5 hypersonic passenger planes might have better economics than mach 2 ... - pirateswithoutborders.com

Forums

Shop

Breaking News

Trump Pissed Off The Globalists at G7 - SF732

OFFICIAL TRAILER: The Religion Business

'Now Witness The Firepower Of This Fully Armed And Operational Battle Station,' Cackles Obam

Tail Wags Dog

Top Tech News

Heads up: Apparently the government is hiding cameras inside fake utility boxes

Sodium Batteries And EVs That Power The Grid: Inside GM's Big Energy Push

NUCLEAR ENGINE - UNLIMITED LUXURY - 20 YEARS WITHOUT REFUELING

China Unveils Nuclear-Powered Floating Hub For Green Shipping

China Launches World's 1st Commercial Brain Chip, Beating Elon Musk's Neuralink!

Modular next-gen US nuclear reactor goes critical

How EMF's cause disease

This Company Will Add Phone, AirPod, and Smartwatch Trackers to License Plate Readers

Elon Details SpaceX AI Data Center in Space Details and Roadmap

5-in-1 miniature surgical robot is the size of a seed

News Link • Transportation: Air Travel • 2018-08-13

Boeing believes mach 5 hypersonic passenger planes might have better economics than mach 2 ...

A mach 5 hypersonic plane would also use standard Jet-A fuel. Liquid methane or some combination of those fuels are also options for the commercial aircraft.

A mach six aircraft requires a supersonic combustion ramjet (or "scramjet") engine, a technology that still isn't mature after decades of research and demonstration. A mach five might be able to just modify the lockheed spyplane engine technology.

The Lockheed SR-71A spyplane flew at speeds up to Mach 3.2 using two Pratt & Whitney J58 engines. The J58 featured a unique configuration called a turboramjet. The engine functioned like a turbojet up to about M2, then diverted air from the compressor into ducts that emptied in the afterburner.

Boeing's hypersonic airliner also would use a turboramjet configuration, with some variations compared to the J58. Instead of ducting only a portion of the airflow around combustor over M2, Boeing's concept might bypass all of the airflow around the engine core at higher speeds.

Read More...
Reported By Robert Lee