Design method of internal waverider inlet under non-uniform upstream for inlet/forebody integration

Huang, Guoping; Zuo, Feng-Yuan; Qiao, Wenyou

doi:10.1016/j.ast.2018.01.012

Cited by 34 publications

(4 citation statements)

References 31 publications

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“…Guoping Huang et al conducted a study on the design method of the internal waverider inlet under the non-uniform upstream for inlet/forebody integration. In this work, a novel bump-integrated three-dimensional internal waverider inlet (IWI) design method is presented for high-speed inlet/forebody integration [8].…”

Section: Introductionmentioning

confidence: 99%

A Study on Design of S-Duct Structures and Air Intake for Small Aircraft Applied to High Strength Carbon–Epoxy Composite Materials

Lim

Choi²,

Park

2022

Materials

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Recently, many structural parts using composite materials are being applied to small aircraft and UAV in the world. The aim of this work is to design the engine intake structure of a small aircraft. For structural safety evaluation, a finite element analysis method was applied. In this work, structural design and numerical analysis of air intake and s-duct structures for small aircraft were performed. The target structure is composed of an s-duct and a cylindrical intake structure. Firstly, an investigation of the mechanical properties of carbon/epoxy material was conducted. The distributed pressure load and acceleration condition was applied to the structural design. The structural design load was investigated considering safety factors. The structural analysis was performed to analyze the validity of the design results. Through the structural analysis using the finite element analysis method, it was confirmed that the designed air intake structure is safe. The manufacturing of the prototype structure will be carried out based on the designed result.

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Section: Introductionmentioning

confidence: 99%

A Study on Design of S-Duct Structures and Air Intake for Small Aircraft Applied to High Strength Carbon–Epoxy Composite Materials

Lim

Choi²,

Park

2022

Materials

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“…The classical bump surface is generated by streamline tracing method in the conical flow field [31]. The pressure controllable bump is proposed by Qiao and Huang [32,33] to avoid overlarge height while keeping identical boundary layer removal. The pressure ridge (PR) mechanism [34] is established to arrange the bump pressure.…”

Section: Introductionmentioning

confidence: 99%

Spillage-Adaptive Fixed-Geometry Bump Inlet of Wide Speed Range

Zhang¹,

Huang²,

Musa³

2021

Aerospace

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In this work, a new spillage-adaptive bump inlet concept is proposed to widen the speed range for hypersonic air-breathing flight vehicles. Various approaches to improve the inlet start-ability are summarized and compared, among which the bump-inlet pattern holds the merits of high lift-to-drag ratio, boundary layer diversion, and flexible integration ability. The proposed spillage-adaptive concept ensures the inlet starting performance by spilling extra mass flow away at low speed number conditions. The inlet presetting position is determined by synthetically evaluating the flow uniformity and the low-kinetic-energy fluid proportion. The numerical results show that the flow spillage of the inlet increases with the inflow speed decrease, which makes the inlet easier to start at low speed conditions (M 2.5–6.0). The effects of the boundary layer on spillage are also studied in this work. The new integration pattern releases the flow spillage potentials of three-dimensional inward-turning inlets by reasonably arranging the inlet compression on the bump surface. Future work will focus on the spillage-controllable design method.

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“…The waverider configuration is widely used in hypersonic vehicles with its good lift-to-drag ratio aerodynamic performance. 1–10 The waverider was first proposed by Nonweiler 11 in the 1950s. According to the given flow field, the configuration is designed by means of shock surface cutting and streamline tracing.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on aerodynamic performance of waverider with a new bluntness method

Xiao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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Abastrct The waverider is deemed the most promising configuration for hypersonic vehicle with its high lift-to-drag ratio at design conditions. However, considering the serious aero-heating protection, the sharp leading edge must be blunted. The existing traditional bluntness methods including the following two types: “reducing material method” and “adding material method”. Compared to the initial waverider, the volume will be smaller or larger using the traditional methods. With the fixed blunted radius, the volume and aerodynamic performance is determined. In this paper, a new bluntness method which is named “mixing material method” is developed. In this new method, a new parameter is introduced based on the traditional two bluntness methods. Under fixed blunted radius, the volume and aerodynamic performance can be changed within a wide range by adjusting the parameter. When the parameter is 0 and 1, the novel blunted method degenerated into the “reducing material method” and “adding material method” respectively. The influence of new parameter on the aerodynamic characteristics and volume are studied by numerical simulation. Results show that the volume, lift and lift-to-drag ratio increases with the increase of the parameter under the fixed blunt radius, but simultaneously, the drag will also increase. Therefore, considering the different requirements of the air-breathing hypersonic aircrafts for the balance of thrust and drag, lift and weight, a suitable bluntness parameter can be selected to achieve a balance. This research can provide reference for hypersonic waverider vehicle design.

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Design method of internal waverider inlet under non-uniform upstream for inlet/forebody integration

Cited by 34 publications

References 31 publications

A Study on Design of S-Duct Structures and Air Intake for Small Aircraft Applied to High Strength Carbon–Epoxy Composite Materials

A Study on Design of S-Duct Structures and Air Intake for Small Aircraft Applied to High Strength Carbon–Epoxy Composite Materials

Spillage-Adaptive Fixed-Geometry Bump Inlet of Wide Speed Range

Numerical study on aerodynamic performance of waverider with a new bluntness method

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