GE90-115B Gas Turbine Jet Engine Testing and Evaluation I takes a lot of money and time to test as thoroughly as the FAA, military, and GE require. More money and time and lives are saved by finding most problems before they become much larger. Some claim US gas turbine aircraft engines can't take turbulence or odd angles of attack. The claim is clearly false, if you note the shot of the crosswind testing fans. The crosswind fans can simulate hurricane winds at any angle. The fan and the engine can be pivoted to simulate any angle. Typically it is some former soviet block people that make those claims. They think just because they carelessly showboat fighters at air shows doing extreme AOA (Angle of Attack), that they are the only ones that can do so. The fact is that we don't make a habit of showboating at air shows because it is risky. The former soviet block has crashed a lot of fighters showboating extreme AOAs. The fact is any time you move a gas turbine with reverse airflow your risk of a flameout increases dramatically. The exhaust can recirculate back into the intake the result can be a backfire or flameout or just reduced power; all can be fatal if you are flying with no margin of error at an air show. Normally; US pilots are told to avoid doing things that can cause cavitation or recirculation, particularly wile airborne. They are tested at higher altitude in remote areas to give a good chance of recovery, and restart, and if nothing else ejection. Normally reversers are not used on ground below 60-30knots. There are some exceptions (sometimes turbofans and turboprops), but it still can be a little risky to the engine. Note this C-17 backfire. I think there was no real damage to the engine in this case.
The General Electric Company, or GE (NYSE: GE) is a multinational American technology and services conglomerate incorporated in the State of New York.. In terms of market capitalization, GE is the world's second largest company and also second in the BrandZ ranking. In the 1960s, aspects of U.S. tax laws and accounting practices led to a rise in the assembly of conglomerates. GE, which was a conglomerate long before the term was coined, is arguably the most successful organization of this type.In 1876, Ohio-born Thomas Alva Edison opened a new laboratory in Menlo Park, New Jersey. Out of the laboratory came arguably the most famous invention of all-a practical incandescent electric lamp. By 1890, Edison had organized his various businesses into the Edison General Electric Company.In 1879, Elihu Thomson and Edwin J. Houston formed the rival Thomson-Houston Electric Company. It merged with various companies and was later led by Charles A. Coffin, a former shoe manufacturer from Lynn, Massachusetts. Mergers with competitors and the patent rights owned by each company made them dominant in the electrical industry. As businesses expanded, it became increasingly difficult for either company to produce complete electrical installations relying solely on their own technology.In 1892, these two major companies combined, in a merger arranged by financier J. P. Morgan, to form the General Electric Company, with its headquarters in Schenectady, New York.In 1896, General Electric was one of the original 12 companies listed on the newly-formed Dow Jones Industrial Average and still remains after 111 years (it is the only one of the original companies remaining on the Dow - though it has not always been in the DOW index).In 1911 the National Electric Lamp Company (NELA) was absorbed into General Electric's existing lighting business. GE then established its lighting division headquarters at Nela Park in East Cleveland, Ohio. Nela Park was the world's first industrial park, and was added to the National Register of Historic Places in 1975, and is still the headquarters for GE's lighting business.The Radio Corporation of America (RCA) was founded by GE in 1919 to further international radio.General Electric was one of the eight major computer companies through most of the 1960s - with IBM, the largest, called "Snow White" followed by the "Seven Dwarfs": Burroughs, NCR, Control Data Corporation, Honeywell, RCA, UNIVAC and GE. (There was also Scientific Data Systems, much smaller than the seven dwarfs). GE had an extensive line of general purpose and special purpose computers. Among them were the GE 200, GE 400, and GE 600 series general purpose computers, the GE 4010, GE 4020, and GE 4060 real time process control computers, and the Datanet 30 message switching computer. A Datanet 600 computer was designed, but never sold. It has been said that GE got into computer manufacturing because in the 1950s they were the largest user of computers outside of the United States federal government. In 1970 GE sold its computer division to Honeywell.In 1986 GE reacquired RCA, primarily for the NBC television network. The remainder was sold to various companies, including Bertelsmann and Thomson SA.