Is BrahMos a ramjet or scramjet?
While the BrahMos is a medium-range ramjet supersonic cruise missile that can be launched from submarine, ships, aircraft, or land. It is the fastest supersonic cruise missile in the world. The BrahMos-II is expected to have a range of 1,500 kilometres (930 mi; 810 nmi) and a speed of Mach 8. During the cruise stage of flight, the missile will be propelled by a scramjet airbreathing jet engine.The original BrahMos, named after the Brahmaputra River in India and the Moskva River in Russia, is an upgraded variant of the Russian-made P-800 Oniks over-the-horizon supersonic anti-ship cruise missile.The BrahMos (also designated as PJ-10) is a long-range, ramjet-powered supersonic cruise missile that can be launched from submarines, ships, fighter aircraft or TEL.The BrahMos-II program, jointly pursued by India and Russia under BrahMos Aerospace, was originally conceived as a scramjet-powered hypersonic cruise missile capable of sustained speeds approaching Mach 8, equivalent to approximately 9,800 km/h.DRDO Chief confirmed that the BrahMos-NG supersonic cruise missile programme is progressing on schedule and will soon equip the HAL Tejas and Su- 30MKI fighter jets. The smaller and lighter missile will allow combat aircraft to carry multiple missiles while improving stealth and operational flexibility.
What are the disadvantages of the ramjet?
Compared with the turbojet, another form of air-breathing propulsion, the main advantage of the ramjet is the absence of moving parts, leading to a lower cost. One of its major drawbacks is that it is incapable of providing a thrust greater than the drag at low speeds, which means that it requires an initial booster. Summary of the ramjet engine evolution in China, France, USA, Germany, Russia, UK and USA. Recent research and development on ramjet and supersonic combustion ramjet (scramjet) engines is concerned with producing greater thrust, higher speed, or lower emission.Operating Mach number range for different types of engines [7]. Scramjets typically engage at Mach numbers above 5. Ramjets are preferred for speeds up to Mach 5. Scramjets are favored beyond Mach 7.Ramjet engines are limited to a maximum speed of about mach 6 due to the shockwave induced pressure loss which occurs when slowing the intake air to subsonic speed. In its most basic form, a ramjet has very few moving parts and, because of this simplicity, is often referred to as a flying stovepipe.