Results 81 to 90 of about 139,373 (174)

Thermal compression effects within a fundamental, hydrogen-fuelled scramjet

open access: yes, 2021
The impact of thermal compression on combustion has been studied experimentally in a hydrogen-fuelled, non-uniform scramjet flowpath. The experimental model consisted of a three-dimensional inlet, a constant area rectangular combustor, and a single-ramp ...
Vanyai, Tristan   +4 more
core   +1 more source

Numerical simulation of scramjet inlet flow fields [PDF]

open access: yes, 1986
A computer program was developed to analyze supersonic combustion ramjet (scramjet) inlet flow fields. The program solves the three-dimensional Euler or Reynolds averaged Navier-Stokes equations in full conservation form by either the fully explicit or ...
Kumar, Ajay
core  

Tradeoffs in jet inlet design: a historical perspective

open access: yes, 2007
The design of the inlet(s) is one of the most demanding tasks of the development process of any gas turbine-powered aircraft. This is mainly due to the multi-objective and multidisciplinary nature of the exercise.
András Sóbester, Sóbester, András
core   +1 more source

Design of Reverse Bleed Slot for Curved Axisymmetric Inlet Based on Kantrowitz Criterion and Flow Field Characteristics

open access: yesAerospace
Conventional forward bleed slots reduce the hypersonic inlet starting Mach number but suffer from excessive flow leakage after restart. This paper proposes a novel reverse bleed slot design method for curved axisymmetric inlets of a solid-fuel scramjet ...
Yongzhou Li   +5 more
doaj   +1 more source

Experimental Study of Single Expansion Ramp Nozzle Performance Using Pitot Pressure and Static Pressure Measurements

open access: yesInternational Journal of Aerospace Engineering, 2019
In order to overcome the drag at hypersonic speed, hypersonic flight vehicles require a high level of integration between the airframe and the propulsion system.
Sergio Nicolas Pachón Laitón   +4 more
doaj   +1 more source

A Computational and Experimental Investigation of a Three-Dimensional Hypersonic Scramjet Inlet Flow Field [PDF]

open access: yes, 1991
A combined computational and experimental parametric study of the internal aerodynamics of a generic three dimensional sidewall compression scramjet inlet configuration was performed.
Holland, Scott Douglas
core  

Aerodynamic Configuration Design for Wide-Speed-Range Vehicles and Morphing Effectiveness Analysis

open access: yes气体物理
This study focused on the critical technologies for wide-speed-range high-speed vehicle design, particularly the integration of aerodynamic configuration and adaptive morphing flight strategies.
Lipeng QU   +6 more
doaj   +1 more source

Physical insight into scramjet inlet behavior via multi-objective design optimization

open access: yes, 2012
Scramjet propulsion is a promising technology for reliable and economical access to space and high-speed atmospheric transport. The inlet plays a key role in determining the performance of scramjets, in particular for the axisymmetric class of scramjet ...
Ogawa, Hideaki, Boyce, Russell R.
core   +2 more sources

Heat transfer characterization of SCO2 in non-uniformly heated rectangular cooling tubes under large mass flow and heat flux conditions

open access: yesCase Studies in Thermal Engineering
A Thermoelectric Conversion System (TECS) with SCO2 as the circulating mass can effectively mitigate the fuel heat sink and electrical energy shortage problems of hypersonic vehicles.
Xiaojuan Niu   +5 more
doaj   +1 more source

Numerical Investigation of Fuel Cooling in Sudden Expansion Structures of Scramjet Engines

open access: yesAerospace
Local overheating in cavities seriously threatens the safe operation of scramjet engines. To investigate the formation mechanism and control methods of local overheating, this paper conducts numerical simulations on the cooling process of cavity sudden ...
Qingjun Wang   +3 more
doaj   +1 more source

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