By Martin Tajmar

ISBN-10: 3211838627

ISBN-13: 9783211838624

ISBN-10: 3709105471

ISBN-13: 9783709105474

Space propulsion structures have an outstanding impression on our skill to commute to different planets or how reasonable a satellite tv for pc provides television courses. This ebook offers an up to date review of every kind of propulsion platforms starting from classical rocket know-how, nuclear propulsion to electrical propulsion structures, and additional to micro-, propellantless or even leap forward propulsion, that's a brand new software below improvement at NASA. the writer exhibits the constraints of the current techniques and the way they can appear like sooner or later. ranging from old advancements, the reader is taken on a trip displaying the superb expertise that has been wear carry for many years to be rediscovered within the close to destiny for questions like how we will be able to even achieve different stars inside a human lifetime. the writer is actively curious about complex propulsion study and contributes along with his personal event to the various awarded subject matters. The ebook is written for someone who's drawn to how area trip should be revolutionized.

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15. SCRAMJET - MHO energy bypass accelerator after combustion, which speeds up the airflow. In order to operate a MHD, the incoming air must be ionized. If ionization takes place in front of the aircraft, air drag is also significantly reduced. This concept of combining advanced drag reduction, scramjet and MHD generator/accelerator was suggested by the Russian Hypersonic System Research Institute (NIPGS), the vehicle given the name AJAX (see Figs. 15). Ionization of air is accomplished by using a microwave generator on board the vehicle.

Basically, it is a combination of a classical rocket and jet engine inside an open tube (Fig. 12) Their operation modes, depending on the velocity, can be subdivided as follows: (i) In the ejector mode, the rocket engine works like the compression stage for the jet engine. The high velocity rocket exhaust gas entrains and compresses air flowing from the open end of the tube. ~> Exhaust Jet Stage Fig. 12. Rocket-based combined-cycle (RBCC) engine (ii) In the ram jet mode, the rocket engine is turned off when the vehicle velocity reaches about Mach 2.

Obviously, although sufficient speeds can be obtained, there are some difficulties which have to be considered: (i) Very high accelerations: Depending on the length of the gun and on the velocity one wants to achieve, the accelerations can be as high as 2,000 up to 100,000 g (Earth gravitational acceleration) for launching directly into orbit. No biological organism can withstand such acceleration loads. Also spacecraft hardware has to be specially protected adding significantly to mass, complexity and costs.

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Advanced Space Propulsion Systems by Martin Tajmar


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