Results 51 to 60 of about 6,709 (233)

Numerical Investigation of Inlet Topology Optimization for Additive Manufacturing [PDF]

open access: yesHangkong bingqi
The inlet is one of the important parts of ramjet, and its strength and stiffness are very important to the stability of ramjet. In order to reduce the negative mass of the ramjet and optimize the ramjet design, this paper takes an intake port as the ...
Guo Jiaqi, Sun Zhenhua, Liu Yadong, Bai Taotao
doaj   +1 more source

CALCULATION AND REGULATION FEATURES OF DUCT-BURNING TURBOFAN ENGINE AT RAMJET MODES

open access: yesАвіаційно-космічна техніка та технологія, 2020
A promising direction in aviation is the creation of anaircraft for supersonic cruise speeds (Mach 3...4). It is known that ramjet engines are more preferable for Mach numbers larger 3.
Олег Владимирович Кислов   +1 more
doaj   +1 more source

Numerical calculations of pressure oscillations in a side-dump ramjet engine [PDF]

open access: yes, 1984
Pressure oscillations in a side-dump ramjet engine have been studied, using a one-dimensional numerical analysis. The engine is treated in two parts; the inlet section, including a region of two-phase flow downstream of fuel injection, and a dump ...
Culick, F. E. C., Yang, V.
core  

Fuel Reactivity Controlled Autoignition and Combustion Characteristics in a Supersonic Combustor With Different Turbulence Models

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
The choice of turbulence model significantly impacts the prediction of the supersonic combustion flow field. In this study, the transient autoignition process and steady supersonic combustion performance of methane fuel with adjustable reactivity in a scramjet combustor were numerically investigated, employing different turbulence models including ...
Zihan Wang   +6 more
wiley   +1 more source

Contribution of Different Parameters on Film Cooling Efficiency Based on the Improved Orthogonal Experiment Method

open access: yesAerospace
The use of film cooling technology is one of the most effective ways to minimize the damage to wall materials caused by the high-temperature environment in a ramjet.
Xinlei Duan   +4 more
doaj   +1 more source

Approximate analysis and stability of pressure oscillations in ramjets [PDF]

open access: yes, 1985
This paper summarizes work accomplished during the past five years on analysis of stability related to recent experimental results on combustion instabilities in dump combustors.
Culick, F. E. C.   +5 more
core  

Height Control of Supersonic Sea‐Skimming Missiles Based on Online Parameter Identification

open access: yesInternational Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
This paper presents a height control approach employing real‐time parameter identification for supersonic sea‐skimming missiles. Firstly, an integrated identification technique based on the Unscented Kalman filter was established for supersonic cruise missiles.
Zhenyu Jiang   +4 more
wiley   +1 more source

Effect of Bluff Body Attributes on Afterburner Combustion Characteristics of a Boron Solid Rocket Scramjet

open access: yesInternational Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
In order to improve the combustion efficiency of boron‐containing primary gas in the secondary combustion chamber of a solid rocket scramjet and improve engine performance, the effects of different types of blunt bodies, number of rear blunt bodies, and distance between front and rear blunt bodies on the combustion performance of the secondary ...
Jiang Ling   +4 more
wiley   +1 more source

A short review of challenges and prospects of boron-laden solid fuels for ramjet applications

open access: yesFirePhysChem, 2023
This short review article explores the advancement, challenges, and prospects of boron-laden solid fuel for ramjet. The energetic aspect of boron combustion is well known, but the complications associated with its efficient combustion persist and must be
Saugata Mandal   +3 more
doaj   +1 more source

Breaking Boundaries with Ceramic Matrix Composites: A Comprehensive Overview of Materials, Manufacturing Techniques, Transformative Applications, Recent Advancements, and Future Prospects

open access: yesAdvances in Materials Science and Engineering, Volume 2024, Issue 1, 2024.
Ceramic matrix composites (CMCs) are a category of advanced materials which have gained significant interest recently due to their remarkable mechanical and thermal characteristics. These composites are composed of ceramic fibers, particles, or other types of ceramics incorporated in a ceramic matrix and have shown the capability to be implemented in ...
Adib Bin Rashid   +5 more
wiley   +1 more source

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