Viscous Corrections for Hypersonic Air Intake Using CFD Simulations
17 Jun 2019-
About: The article was published on 2019-06-17. It has received None citations till now.
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TL;DR: In this paper, a review of the evolution and maturity of SU-scramjet engines over the last 40 years is presented in terms of efforts completed or proceeding in the United States, Russia, France, Germany, Japan, Australia, and other countries.
Abstract: Ageneralreviewoftheemergenceandmaturingofsupersoniccombustionramjet (scramjet)enginetechnologies overthelast 40 years is presented. The review isgiven in terms of theeffortscompleted or proceeding in theUnited States, Russia, France, Germany, Japan, Australia, and other countries. A brief account of the challenges of scramjet combustor development is given, and attention is directed toward other source references for more detailed accounts of technology evolution. Two emerging scramjet applications are identie ed, namely, hydrogenfueledhigh-speed engines foraccess to spaceand hydrocarbon-fueled enginesforhypersonicair-launched missiles.
602 citations
TL;DR: A general review of the worldwide evolution of ramjet propulsion since the Wright brothers first turned man's imagination into a practical reality is presented in this article, where the development history and principal contributing development programs are reviewed.
Abstract: A general review is presented of the worldwide evolution of ramjet propulsion since the Wright brothers e rst turned man’ s imagination to e y into a practical reality. A perspective of the technological developments from subsonic to hypersonic e ight speeds is provided to allow an appreciation for the advances made internationally from the early 1900s to current times. Ramjet, scramjet, and mixed-cycle engine types, and their operation and rationale for use are considered. The development history and principal contributing development programs are reviewed. Major airbreathing technologies that had signie cant impact on the maturation of ramjet propulsion and enabled engine designs to mature to their current state are identie ed. The general state of e ight-demonstrated technology is summarized and compared with the technology base of 1980. The current status of ramjet/scramjet technology is identie ed. Ramjet and scramjet propulsion technology has matured dramatically over the years in support of both military and space access applications, yet many opportunities remain to challenge future generations of explorers.
481 citations
31 Oct 2006
248 citations
TL;DR: In this paper, the advantages of using hydrocarbon fuel such as kerosene in a scramjet-powered second stage of a two-stage-to-orbit aerospace plane is explored.
Abstract: Ase ightspeedincreasesinto thehypersonicregime, stagnation pressureand temperatureinsidean airbreathing engine become so great that, for practical structures of acceptable mass, the e ow must pass through the engine at supersonic speeds so as to limit the static pressures, hence the term scramjet (supersonic combustion ramjet ). The classicapplication forthescramjet isto along-rangeairlinerusing hydrogenfueland offeringextended hypersonic e ight. The scramjet is also widely accepted as propulsion for cruise missiles and as a possible complement to the rockets conventionally used for space launchers. The topic of how scramjets may best be used, especially in the near term, is explored. In particular, the advantages are demonstrated of using hydrocarbon fuel such as kerosene in a scramjet-powered second stage of a two-stage-to-orbit aerospace plane. Nomenclature Ai = intake capture area CL = lift coefe cient (referred to planform area ) D = drag f = acceleration g = acceleration due to gravity h = specie c enthalpy L = lift L=D = lift-to-drag ratio .L=D/p = L=D calculated from pressure forces .L=D/v = L=D calculated from pressure lift and the sum of pressure and friction drags M = mach number n = number of shock waves in scramjet intake (Fig. 3) p1 = ambient pressure T = thrust or temperature t = time 1f = gain in acceleration
30 citations