Scramjet engine – making hypersonic travel possile

Hypersonic travel seems to be impossible now a days, but it be possible after 10-15 years from now on. Scramjet (supersonic combusting ramjet) is similar to Ramjet except in this combustion takes place in supersonic airflow. Unlike the Ramjet, in which air was decelerated at subsonic velocity to be combusted; Scramjet combusts the air in supersonic speed which give Scramjet very high speed, in the range of MACH 12(14000 km/hr) to MACH 24(25000 km/hr).

Working of a Scramjet engine

Scramjet like any other jet engine , uses fuel and oxidiser to protect thrust. The design of Scramjet consists of a converging inlet, in which incoming air is compressed using high pressure in front of it; a combustor ; and a diverging nozzle to produce accelerated thrust. Scramjet like Ramjet does not use any rotating parts, therefore it require high kinetic energy of hypersonic flow to compress the incoming air ; and must be accelerated to high velocity, like Mach 4. Due to supersonic flow of air, fuel must be injected, mixed, ignited and burned within milliseconds in combustion chamber.

Scramjet has some advantage over Turbojet engine as it does not need to carry oxygen, and no rotating parts made it easier to manufacture. Scramjet has a very high specific impulse than Turbojet. Specific impulse is a chnage in momentum per unit of propellant. Rocket produce only 600 seconds of specific impulse, while Ramjet produce between 1000 and 4000 seconds.

Computational fluid dynamics (CFD) image of the NASA X-43A
with scramjet attached to the underside at Mach 7

There are lot of Scramjet aircraft prototype being tested like NASA X-43A, Boeing X-51, North American X-15, and Chinese WU-14. Fastest scramjet ever tested is NASA X-43A which achieved the speed of MACH 9.6.

Many countries like India, China, Russia and Brazil are conducting test and working on the Scramjet engine. Russian “GLL HOLOD” was the first to flew in 1991 at a speed of MACH 5.8. Brazil 14-X, India Brahmos-2, HSTDV and AVATAR RLV are in the progress of developing.

NASA X-43A world fastest scramjet aircraft achieving
speed upto MACH 9.6.

Comments

AI in Soap Manufacturing Industry

Machine learning (ML) has numerous potential applications in the soap manufacturing industry, contributing to process optimization, quality control, resource management, and more. Here are some examples: 1. Quality Control : ML algorithms can be trained to analyze images of soap bars to detect defects such as cracks, air bubbles, or inconsistent coloring. By automating the inspection process, manufacturers can ensure that only high-quality products reach the market, reducing waste and enhancing customer satisfaction. 2. Predictive Maintenance : ML models can analyze sensor data from manufacturing equipment to predict when maintenance is needed. By detecting potential issues before they cause equipment failure, manufacturers can minimize downtime and reduce repair costs. 3. Supply Chain Optimization : ML algorithms can analyze historical data on raw material prices, demand forecasts, and production schedules to optimize inventory management and procurement decisions. This helps minimize...

Startup builds AI to automate accounting

Smacc , which uses AI to automate accounting, has secured a 3.5 million Series A round from Cherry Ventures, Rocket Internet, Dieter von Holtzbrinck Ventures, Grazia Equity and business angels. Smacc offers small and medium-sized enterprises a platform to digitize and automate accounting and financial processes. The founding trio Uli Erxleben, Janosch Novak and Stefan Korsch came up with the idea after find accounting to be the most painful part of their own startup. Erxleben managed Rocket Internet’s US ventures in New York and San Francisco, and is also the founder of Berliner Berg , a craft beer startup. Customers submit their receipts to Smacc, which are turned into a machine-readable format, encrypted, then allocated to an account. The platform gradually also self-learns, tracking invoices, sales and costs, as well as their liquidity. The system checks against some 64 data points, verifies the invoice, checking, for example, that the math adds up, and even if the VAT...

Goodbye, Oppurtunity. Nasa mars rover 'Opportunity' no longer resposding.

Opportunity, the intrepid NASA rover that spent 15 years on Mars climbing in and out of craters to gather evidence of the planet's watery past, has been brought down by tiny particles of dust. After weeks of trying to revive the veteran Mars rover in the wake of a blinding dust storm, NASA has given up on ever hearing from it again. It's a humble ending for a machine that survived a 300-million-mile journey through space, executed a hole-in-one landing, and set a record by driving more than 28 extraterrestrial miles. Opportunity's last transmission to Earth occurred on June 10 amid an epic Martian dust storm. Still, NASA engineers remained hopeful that when the dust settled, the rover would recharge its solar-powered batteries and resume its superlative mission. Opportunity landed on Mars in January 2004 for a mission that was supposed to last 90 Martian days. Its twin rover, Spirit, had landed three weeks earlier on the other side of the planet. "Wit...

CuriouTech

Search This Blog