Parametric study and performance analysis of hybrid rocket motors with double-tube configuration

Yu, Nanjia; Zhao, Bo; Lorente, Arnau Pons; Wang, Jue

doi:10.1016/j.actaastro.2016.12.003

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…As a second example of distributed injection, two concepts that are similar are presented. The Beihang University [90,91] and Kahraman et al [92] propose another method to distribute the injector effects along the whole fuel grain rather than only at the head-end. The concept is labeled double tube by Beihang University and Distributed Tube Injector (DTI) by Kahraman et al.…”

Section: Distributed or Multi-segment Injectionmentioning

confidence: 99%

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Evaluation of Regression Rate Enhancing Concepts and Techniques for Hybrid Rocket Engines

Glaser

Hijlkema

Anthoine

2022

Aerotec. Missili Spaz.

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The low regression rate of Hybrid Rocket Engines (HREs) is one prominent characteristic that is addressed in most abstracts concerning hybrid propulsion. Over the years, researchers developed and investigated numerous ways to tackle the low regression rate problem of HREs. This article is a collection and assessment of these diverse methods and designs. It allows for a quick overview of the different mechanisms that are being employed and can serve both as information and inspiration. The enhancement ideas are grouped together as (a) adjustments to the solid fuel chemical properties, (b) advanced injection methods and concepts and (c) improving the combustion chamber design. These different techniques are discussed and their individual impact on the regression rate is assessed both qualitatively and quantitatively. All methods that are presented come with a different set of advantages and disadvantages, making the regression rate enhancement a trade-off problem. In our view, the most promising designs and methods are those that only call for minor adjustments to the HRE design, as they can be also added to already existing engines. Above all, it is to be said that regression rate enhancing techniques that change the unique features of HREs (namely safety, simplicity and low cost) are to be employed with caution. Only if the achievable regression rate increase is justifying the implications for the HRE in the envisioned use-case, these concepts represent promising alternatives to the status quo.

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Section: Distributed or Multi-segment Injectionmentioning

confidence: 99%

“…In both concepts, the oxidizer is injected by a tube over the whole fuel grain length. Yu et al [91] use GOX/HDPE as propellants and the injector tube is covered by a small inner fuel grain. The design is presented in Fig.…”

Section: Distributed or Multi-segment Injectionmentioning

confidence: 99%