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History and Classifications of Aeroengines
Published in Ahmed F. El-Sayed, Aircraft Propulsion and Gas Turbine Engines, 2017
Jet propulsion is based on the reaction principle that governs the motion or flight of both aircraft and missiles. Though such a principle was one of the three famous laws of motion stated by Sir Isaac Newton in 1687, ancient Egyptians and Chinese were already utilizing this principle several hundred years before him. The first known reaction engine was built by the noted Egyptian mathematician and inventor Hero (sometimes called Heron) of Alexandria sometime around 250 BC [2] (some references refer to such an event in 150 BC [3]). Hero called his device an aeolipile (Figure 1.1). It consisted of a boiler or bowl that held a supply of water. Two hollow tubes extended up from the boiler and supported a hollow sphere, which was free to turn on these supports. When the steam escaped from two bent tubes mounted opposite one another on the surface of a sphere, these tubes became jet nozzles. A force was created at the nozzles, which caused the sphere to rotate about its axis. It is said that Hero attached a pulley, ropes, and linkages to the axle on which the sphere rotated to use his device to pull open a temple’s doors without the aid of any visible power. Further details are found in numerous websites including [4].
Gas Power Cycles
Published in Kavati Venkateswarlu, Engineering Thermodynamics, 2020
A propulsion system that generates the thrust required to move the airplane through the air is called jet propulsion system. It is based on Sir Isaac Newton’s third law, which is stated as “for every force acting on a body, there is an opposite and equal reaction.” For jet propulsion, the atmospheric air (considered as body) is accelerated as it passes through the engine. The force, which is needed to accelerate the atmospheric air, will have an equal effect acting in the opposite direction on the apparatus that produces the acceleration.
Research on the thrust of a high-pressure water jet propulsion system
Published in Ships and Offshore Structures, 2018
Zuti Zhang, Shuping Cao, Xiaohui Luo, Weijie Shi, Yuquan Zhu
Compared with the traditional water jet propulsion and propeller, the structure of high-pressure water jet propulsion system is simpler due to the cancelling of complicated shaft system. Moreover, the mechanical vibration and noise are significantly reduced (Jiang et al. 2015). Because of the elimination of complex thin-screw impeller, the performance of water jet propulsion system on anti-hydro erosion is also improved (Nwaoha et al. 2017). In addition, since the nozzle and water hydraulic piston pump are flexibly connected through high-pressure hoses, the angle of water jet can be controlled conveniently to improve its maneuverability (Xin et al. 2013; Liu et al. 2015; Zhao et al. 2016).
BITA-Based Secure and Energy-Efficient Multi-Hop Routing in IoT-WSN
Published in Cybernetics and Systems, 2023
Tunicate can locate a marine food supply. The location of the food supply, however, remains unknown in the search area. Two tunicate actions are used in this paper to identify the best possible food source. This includes jet propulsion and intelligent swarms. A tunicate was used to replicate the jet propulsion behavior mathematically for three requirements, avoiding conflicts between search agents’ progression toward being the top search agent and staying near the most effective search agent.