Rocket nozzle design with ejector effect potential

Cerantola, D. J.

doi:10.22215/etd/2008-08486

Cited by 5 publications

(15 citation statements)

References 18 publications

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“…1) is based on the work of Cerantola [31] and Waung [32] and consists of two separate flowpaths: the supersonic expansion of hot rocket gases and the entrainment of atmospheric air. These two streams are then mixed within a duct for further combustion and expansion within the remainder of the engine (downstream of plane 3 in Fig.…”

Section: Methodsmentioning

confidence: 99%

Exchange Inlet Design for Rocket-Based Combined-Cycle Engines

Etele

Waung

Cerantola

2012

Journal of Propulsion and Power

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A methodology is presented for generating an inlet containing an entrained flow surrounded by an annular flow of driving, supersonic gas. As the driving flow expands outward into an annular pattern, it maintains a circular throat area while allowing the entrained flow to be drawn toward the axisymmetric axis. The methodology accounts for both compressibility and viscous effects, and it can be scaled for a variety of operating conditions and driving gases. Designs are presented for the inlet to an example rocket-based combined-cycle engine based on both a kerosenefueled and a hydrogen-fueled rocket. Numerical results are presented, showing rocket exhaust patterns that contain uniform conditions over 75% of the annular exhaust area. The entrained air passage is also shown to have high total pressure recovery over the subsonic flight range. The predicted performance is shown to be within 10% of the numerical simulations over the range of conditions considered.

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Section: Methodsmentioning

confidence: 99%

Exchange Inlet Design for Rocket-Based Combined-Cycle Engines

Etele

Waung

Cerantola

2012

Journal of Propulsion and Power

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“…In addition, there is also an optimization program that uses a genetic algorithm to search for one of the better solution when requirements are given [25]. After designing the rocket flow path geometry for the exchange inlet, Cerantola ran several simulations using Ansys CFX for a particular set of rocket parameters [26]. Waung, after designing the intake that houses the rocket flow path, used the panel method and computational fluid dynamics (CFD) to look at the entrainment ratio of the exchange inlet [27].…”

Section: Objectivementioning

confidence: 99%

“…The parameter <p e is also important since it can control at what angle the flow enters the mixing duct and as well control how much the flow is turned. For a more information regarding the rocket flow path design parameters please refer to Cerantola [26].…”

Section: Figure 9: Rocket Flow Path Design Layoutmentioning

confidence: 99%

“…Then applying theory described in Cerantola [26], a Matlab program first solves the isentropic equation using a one-dimensional analysis. The analysis assumes that the flow is compressible, at steady state and in the absence of chemical reactions.…”

Section: Figure 9: Rocket Flow Path Design Layoutmentioning

confidence: 99%

“…The reason for this originates from the viscous consideration. When a displacement thickness is added, a certain boundary layer growth is calculated based on the inviscid flow conditions [26]. This displacement thickness is added to all wall surfaces.…”

Section: Single Rocket Along the Centerline Creationmentioning

confidence: 99%

See 2 more Smart Citations

Simulation of a rocket base combined cycle exchange inlet at subsonic conditions

Yuen¹

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An ejector air intake design method for a novel rocket-based combined-cycle rocket nozzle

Waung¹

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Rocket nozzle design with ejector effect potential

Cited by 5 publications

References 18 publications

Exchange Inlet Design for Rocket-Based Combined-Cycle Engines

Exchange Inlet Design for Rocket-Based Combined-Cycle Engines

Simulation of a rocket base combined cycle exchange inlet at subsonic conditions

An ejector air intake design method for a novel rocket-based combined-cycle rocket nozzle

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