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Optimal Hypersonic Conical Wings

机译:最佳超声锥形翅膀

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摘要

The aim of this paper is the design of optimum wings for the hypersonic range. In order to simplify the problem various assumptions are made, which however still allows us to obtain results of practical value. The problem is considered in the framework of classical aerodynamics, inviscid perfect gas. This restricts the Mach numbers from being so high that real gas effects are important, although as far as lift and wave drag are concerned they do not play a major part. Conical wings are considered which helps to reduce the number of variables and which are practical shapes. Also the focus is on the pressure distribution on the lower surface of a lifting wing which provides the main component of the lift. Further hypersonic small disturbance theory is used to describe the flow. This theory is very accurate in the appropriate range and helps by giving a similarity law, an analogy to unsteady flow and reducing the number of dependent variables. With all these assumptions the problem of finding an optimum becomes very tractable, although a large number of computations are still required.
机译:本文的目的是为超音速范围设计的最佳翅膀。为了简化问题,所以进行各种假设,然而仍然允许我们获得实际值的结果。在经典空气动力学框架中,问题被认为是托盘完美的气体。这限制了Mach数量如此之高,即真正的气体效果很重要,尽管只需升力和波浪拖动才担心,但它们不扮演主要部分。认为锥形翼被认为有助于减少变量的数量并且是实际形状的。此外,重点是升降机的下表面上的压力分布,其提供升力的主要部件。进一步的超音速小扰动理论用于描述流程。这种理论在适当的范围内非常准确,并通过提供相似度法,对不稳定的流量进行类比并减少从属变量的数量来帮助。尽管仍然需要大量计算,但所有这些假设都会发现最佳的问题变得非常易于。

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