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Hermeus
Hermeus Corporation is an American startup company designing a hypersonic airliner. History The company was founded in 2018 with initial funding led by Khosla Ventures. In 2021, Hermeus secured $60 million in funding from the U.S. Air Force and venture capital to support the Quarterhorse flight test program. In March 2022, the company raised a $100 million series B investment round led by Sam Altman. Other investors included Founders Fund, In-Q-Tel, and existing investors Khosla Ventures, Canaan Partners, and Bling Capital. Products The Quarterhorse aircraft under development is planned to reach Mach 5 with a range of . The company claims to have designed, built, and successfully tested a Mach 5 engine prototype. In August 2020, Hermeus received a $1.5 million contract from the United States Air Force to develop their proposed aircraft and function as a possible Air Force One. They are building the supersonic Quarterhorse Mk 2 with an advanced engine based on the Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khosla Ventures
Khosla Ventures is a private American venture capital firm based in Menlo Park, California. It was founded by entrepreneur Vinod Khosla in 2004. The firm works with early-stage companies in the Internet, computing, mobile technology, artificial intelligence, financial services, agriculture, healthcare and clean technology sectors. It is known for making early capital investments in startups such as Impossible Foods, Instacart, Affirm, DoorDash, Square and OpenAI. History The firm was founded in 2004 by Vinod Khosla, a former general partner of Kleiner Perkins. Khosla Ventures's first two investment vehicles were funded with his own personal capital and were not open to institutional investors. Khosla Ventures Fund III secured $1 billion to invest in traditional early stage and growth stage companies. Khosla also raised $300 million for Khosla Seed, which would invest in higher-risk opportunities and science experiments. By 2013, the company was considered one of the top ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exosonic
Exosonic, Inc was an American startup company that were designing a supersonic transport aircraft. The company was hoping to receive certification for their aircraft by 2029. Exosonic announced in November 8, 2024 that the company would be shutting down. History The company was founded in 2019. In August 2020 they were awarded a $1 million small business innovation research contract by the United States Air Force to prototype their aircraft for use as Air Force One. Aircraft Exosonic's proposed aircraft was a Mach 1.8 airliner with 70 seats. In June 2021 the design was undergoing scale-model wind tunnel testing. The aircraft was under contract to be modified for possible function as Air Force One. See also * Aerion * Boom Supersonic Boom Technology, Inc. (trade name Boom Supersonic) is an American company developing the Overture, a supersonic airliner. It has also flight tested a one-third-scale demonstrator, the Boom XB-1 "Baby Boom", which broke the sound barrier for the .. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerion
Aerion Corporation was an American aircraft manufacturer based in Reno, Nevada. It was founded by Robert Bass of Fort Worth. From 2004 until 2021, the company was developing a 10-passenger supersonic jet to cut transatlantic flights by three hours, using "boomless cruise" technology to negate the sonic boom. It was expected to be the first supersonic aircraft without an afterburner to lower emissions, and the first to run on biofuels. Aerion abruptly announced on May 21, 2021, that the company would be shutting down due to inability to raise needed capital to proceed. History Aerion Corporation was founded in 2003 by Texas billionaire Robert Bass as a startup working to commercialize supersonic aviation technology. The company began development on supersonic business jets in 2004. Increased demand from a variety of aircraft manufacturers for Aerion’s natural laminar flow (NLF) expertise drove the company to launch Aerion Technologies Corporation, a wholly owned subsid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force One
Air Force One is the official air traffic control-designated Aviation call signs, call sign for a United States Air Force aircraft carrying the president of the United States. The term is commonly used to denote U.S. Air Force aircraft modified and used to transport the president, and as a metonym for the primary presidential aircraft, Boeing VC-25, VC-25, although it can be used to refer to any Air Force aircraft the president travels on. The idea of designating specific military aircraft to Transportation of the President of the United States, transport the president arose during World War II when military advisors in the United States Department of War, War Department were concerned about the risk of using commercial airlines for presidential travel. In 1944, a Douglas C-54 Skymaster, C-54 Skymaster was converted for use as the first purpose-built presidential aircraft. Dubbed the ''Sacred Cow'' and operated by the United States Army Air Forces, Army Air Force, it carried Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Privately Held Company
A privately held company (or simply a private company) is a company whose Stock, shares and related rights or obligations are not offered for public subscription or publicly negotiated in their respective listed markets. Instead, the Private equity, company's stock is offered, owned, traded or exchanged privately, also known as "over-the-counter (finance), over-the-counter". Related terms are unlisted organisation, unquoted company and private equity. Private companies are often less well-known than their public company, publicly traded counterparts but still have major importance in the world's economy. For example, in 2008, the 441 list of largest private non-governmental companies by revenue, largest private companies in the United States accounted for $1.8 trillion in revenues and employed 6.2 million people, according to ''Forbes''. In general, all companies that are not owned by the government are classified as private enterprises. This definition encompasses both publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramjet
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to . Ramjets can be particularly appropriate in uses requiring a compact mechanism for high-speed, such as missiles. Weapons designers are investigating ramjet technology for use in artillery shells to increase range; a 120 mm ramjet-assisted mortar shell is thought to be able to travel . They have been used, though not efficiently, as tip jets on the ends of helicopter rotors. History France Cyrano de Bergerac ''L'Autre Monde: ou les États et Empires de la Lune ( Comical History of the States and Empires of the Moon)'' (1657) was the first of three satirical novels written by Cyrano de Bergerac that are considered among the first science fiction stories. Arthur C Clarke credited this book with conceiving the ramjet, and as the first fictional example of rocket-powered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search. In January 2024, YouTube had more than 2.7billion monthly active users, who collectively watched more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and , there were approximately 14.8billion videos in total. On November 13, 2006, YouTube was purchased by Google for $1.65 billion (equivalent to $ billion in ). Google expanded YouTube's business model of generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by and for YouTube. It also offers YouTube Premium, a paid subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spike Aerospace
The Spike S-512 was a planned supersonic business jet, designed by Spike Aerospace, an American aerospace manufacturer firm based in Boston, Massachusetts. Design The S-512 would have enabled long flights for business and private travelers, such as from New York City to London, to take only three to four hours instead of six to seven. The aircraft did not have windows for passengers. Instead, it would have been equipped with cameras sending external views to thin, curved displays lining the interior walls of the fuselage. Development In early 2014, the company planned to promote the project with an exhibit at the 2014 EAA AirVenture Oshkosh airshow. Spike then expected to launch the plane by December 2018. In January 2017, a subsonic scale prototype was planned to fly in summer 2017 to demonstrate low-speed aerodynamic flight characteristics, before a series of larger prototypes and a supersonic demonstrator by the end of 2018, Spike intended to certify the S-512 by 2023. By Spr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boom Supersonic
Boom Technology, Inc. (trade name Boom Supersonic) is an American company developing the Overture, a supersonic airliner. It has also flight tested a one-third-scale demonstrator, the Boom XB-1 "Baby Boom", which broke the sound barrier for the first time on January 28, 2025, during a flight from the Mojave Air and Space Port. History The company was founded in Denver in 2014. It participated in a Y Combinator startup incubation program in early 2016, and has been funded by Y Combinator, Sam Altman, Seraph Group, Eight Partners, and others. In March 2017, $33 million was invested by several venture funds: Continuity Fund, RRE Ventures, Palm Drive Ventures, 8VC and Caffeinated Capital. Boom secured $41 million of total financing by April 2017. In December 2017, Japan Airlines invested $10 million, raising the company capital to $51 million: enough to build the XB-1 “Baby Boom” demonstrator and complete its testing, and to start early design work on the 55-seat airliner. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbojet
The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and a turbine (that drives the compressor). The compressed air from the compressor is heated by burning fuel in the combustion chamber and then allowed to expand through the turbine. The turbine exhaust is then expanded in the propelling nozzle where it is accelerated to high speed to provide thrust. Two engineers, Frank Whittle in the United Kingdom and Hans von Ohain in Germany, developed the concept independently into practical engines during the late 1930s. Turbojets have poor efficiency at low vehicle speeds, which limits their usefulness in vehicles other than aircraft. Turbojet engines have been used in isolated cases to power vehicles other than aircraft, typically for attempts on land speed records. Where vehicles are "turbine-powere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney F100
The Pratt & Whitney F100 (company designation JTF22) is a low bypass afterburner, afterburning turbofan engine. It was designed and manufactured by Pratt & Whitney to power the U.S. Air Force's "FX" initiative in 1965, which became the McDonnell Douglas F-15 Eagle, F-15 Eagle. The engine was to be developed in tandem with the Pratt & Whitney F401, F401 which shares a similar core but with an upscaled fan for the U.S. Navy's Grumman F-14 Tomcat, F-14 Tomcat. The F401 was later abandoned due to costs and reliability issues. The F100 also powered the General Dynamics F-16 Fighting Falcon, F-16 Fighting Falcon for the Air Force's Lightweight Fighter (LWF) program. Development In 1967, the United States Navy and United States Air Force issued a joint engine Request for Proposals (RFP) for the F-14 Tomcat and the FX, which became the parallel fighter design competition that led to the McDonnell Douglas F-15 Eagle, F-15 Eagle in 1970. This engine program was called the IEDP (Initial E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
