Skip to main content

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.
Labels:

Comments

Post a Comment

Popular posts from this blog

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...
Post a Comment
Read more

Telescopic Contact Lens For Visually Impaired People

See far distance just by winking your eyes. A team of engineers have designed a telescopic contact lens that can switch between normal and magnefied vision.  The Researchers at  San Jose, California has built a prototype pf lens that could one day help people with visual impairment  to see. The lenses might be particularly useful with age-related macular degeneration, a debilitating condition in which people gradually lose their central vision. It is the leading cause of visual impairment and affect millions worldwide. The contact lens developed by Ford’s team is one millimeter thick. Researchers used aluminum mirrors, fit tightly together, to create a ring-shaped telescope embedded in the contact lens. The center of the lens allows for normal, non-magnified vision.  Its periphery, where the telescope is located, magnifies images 2.8 times. Switching between normal and magnefied vision Without the glasses, the contact lenses superimpose both normal and magn...
Post a Comment
Read more

Top 3 Fastest Hydrogen Powered Car

When it comes to racing using hydrogen powered car, this top three car will win the show. Hydrogen powered car uses hydrogen gas as a fuel which combust with oxygen to form water. #3. Aston Martin Rapide :  British luxury marque ASTON MARTIN  introduced AM Rapide S in early 2010.  The Rapide is powered by a 5,935 cc V12 engine , producing 470 bhp and torque of 443 lbf·ft (601 N·m). It is Rear-wheel drive  and has a six- speed Touchtronic automatic. The Rapide can reach a top speed of 188.5 mph (303 km/h),  and accelerate 0-100 km/h (62 mph) in 5.3 seconds, or 0-60 mph (97 km/h) in 5.0 seconds. #2. BMW H2R : This car built by BMW uses liquid hydrogen as a fuel. The H2R’s 6.0-liter V-12 engine, which draws on BMW 's Valvetronic  and Double-Vanos  technology, is based on the 760i’s gasoline-fueled powerplant. This H2-powered high performer generates 232 horsepower (173 kW), helping it t...
Post a Comment
Read more