古董
发表于 2025-3-28 15:09:39
Rocket Classifications, Liquid Propellant Rockets, Engine Selection, and Heat Transferange a constant velocity motion, or overcome retarding forces when a body is propelled through a medium. There are two essential elements in any propulsive mechanism: the energy source and an energy conversion device to transpose the energy into the form most suitable for propulsion. In an automobil
无脊椎
发表于 2025-3-28 20:17:16
Hybrid Rocket Theory and Designlid. In a typical design (Fig. 7-1), the oxidizer is sprayed in at the head end of a solid cylindrical fuel grain. It is apparent that once the liquid oxidizer is injected, the combustion process proceeds according to natural law and the geometric constraints designed into the grain and is not subje
precede
发表于 2025-3-29 01:46:21
Nuclear Rocket Propulsion latter may be further subdivided into liquid-, gas-, and plasma-core engines. Although fluid-core systems have been studied by a number of investigators during the past ten years, no major development activity has been initiated. Details of these systems are discussed in Chapter 9.
sacrum
发表于 2025-3-29 03:30:50
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敲竹杠
发表于 2025-3-29 10:51:31
Electric and Ion Propulsiones directly from the basic rocket equation . where ΔV = the change in velocity achieved in free space acceleration.. = exhaust velocity of the rocket... = initial mass of the rocket... = final mass of the rocket
TOXIC
发表于 2025-3-29 13:28:58
Interaction Flows Due to Supersonic Secondary Jetssor blade cascades, the analysis of the design-point operation of subsonic and supersonic inlets, etc., involve mathematically sophisticated solutions of the fluid motion and aero-thermochemical coupling between it and the medium. As difficult as some of these problems are, their basic formulation i
闹剧
发表于 2025-3-29 18:26:13
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Introduction
发表于 2025-3-29 23:25:41
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OTHER
发表于 2025-3-30 02:21:19
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Aerophagia
发表于 2025-3-30 06:31:39
W. H. T. Lohveral chapters, we consider designs in which all factors have two levels. Many experiments are of this type. This is because two is the minimum number of levels a factor can have and still be studied, and by having the . (2), an experiment of a certain size can include the .. After all, an experimen