Scaling of Hybrid Rocket Motors with Swirling Oxidizer Injection

Paccagnella, Enrico; Karabeyoğlu, Arif; Barato, Francesco; Pavarin, Daniele

doi:10.2514/6.2015-3833

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…In a similar fashion to this thesis, the analysis have been validated with the test results provided by an experimental campaign [12]. This research expanded further adding new elements as Liquid Injection [13] [14] and Vortex Injection [15] [16] [17] [18].…”

Section: Computational Fluid Dynamicsmentioning

confidence: 88%

“…In [15], a CFD investigation on the influence of swirling flow field inside the combustion chamber is carried out, and the model used is k-again. However, in Paccagnella's work [18] a similar analysis is carried out with the k-ω SST model instead. This model adopts a blending function to combine the advantages of both k-and k-ω models : while k-is more accurate in the free-stream zone, k-ω is more accurate in the near-wall region [46] [47] [48].…”

Section: Turbulencementioning

confidence: 99%

“…The DHX-4 motor is a labscale motor, with a free-stream zone inside the combustion chamber fairly limited, so an accurate modeling of the near-wall flow field is extremely important to obtain a realistic flame structure. Furthermore, since a light swirl motion is given to the liquid injection, the analogy with the work of [18] was exploited using the same turbulence model. Some simulations have been carried out using the k-model as well, however divergence in the solver eventually appeared.…”

Section: Turbulencementioning

confidence: 99%

“…In the Reverse Hybrid, on the contrary, the oxidizer is solid and the fuel is liquid. The latter configuration is less common, because solid non-cryogenic oxidizers are less energetic than liquid ones, and liquid fuels have to be handled carefully to prevent explosions [2]. Even though this technology appears as a trade-off between the other two motor configurations, the operation is completely different.…”

Section: Introduction 11 Hybrid Rocket Propulsionmentioning

confidence: 99%

See 3 more Smart Citations

CFD Simulations of Self-pressurized Nitrous Oxide Hybrid Rocket Motors

Paccagnella

Barato

Gelain

et al. 2018

2018 Joint Propulsion Conference

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Delft Aerospace Rocket Engineering has developed a 1 kN hybrid rocket motor, using Nitrous Oxide as oxidizer and a mixture of Sorbitol and Paraffin as fuel. During the campaign, different motor configurations were tested. The thesis starts with the numerical simulation of the rocket motor firing in the different tests, modelling the discharge of self-pressurized Nitrous Oxide. The simulation provides the trend over time of motor parameters such as mass flow rates, vapor quality of the oxidizer, and fuel grain thickness. Once validated through comparison with the test data, these values have been used to setup CFD simulations of the combustion chamber. An instant of the burning is simulated in steady state conditions using the eddy dissipation combustion model, gaseous injection of the fuel and no entrainment of liquefying paraffin with the oxidizer flow. The oxidizer is injected in both liquid and gas phase using the results of the numerical simulations to initialize the boundary conditions. The results are compared with the numerical data, the experimental data and the values predicted by the theory, to show the improvements that CFD simulations can provide to the designer during the development of a new hybrid rocket motor.

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Section: Computational Fluid Dynamicsmentioning

confidence: 88%

Section: Turbulencementioning

confidence: 99%

Section: Turbulencementioning

confidence: 99%

Section: Introduction 11 Hybrid Rocket Propulsionmentioning

confidence: 99%

See 2 more Smart Citations

CFD Simulations of Self-pressurized Nitrous Oxide Hybrid Rocket Motors

Paccagnella

Barato

Gelain

et al. 2018

2018 Joint Propulsion Conference

Self Cite

View full text Add to dashboard Cite

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Experimental and numerical investigation of swirling H2O2 and polypropylene hybrid rocket motor with regenerative cooling

Wei

Hung

et al. 2022

Acta Astronautica

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Experimental Investigation of Throttleable H2O2 and Polypropylene Hybrid Rocket Motor

Chang

Wei

et al. 2023

Journal of Propulsion and Power

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This study experimentally investigated the propulsion performance of a swirling-type throttleable hybrid rocket motor using hydrogen peroxide and polypropylene. An in-house throttle valve consisted of a servomotor, and an industrial ball valve was integrated to instantaneously control the oxidizer mass flow rate. Several ground static hot-fire tests with fixed oxidizer mass flow rates of [Formula: see text] (100%) and [Formula: see text] (82%) and many step-varying oxidizer mass flow rates were performed to examine its propulsion performance. The hybrid rocket motor achieved an impressive sea-level [Formula: see text] of 240 s, an engine [Formula: see text] efficiency of more than 97%, and a thrust uncertainty of less than 5% when the oxidizer flow rate was fixed as [Formula: see text]. For the multiple-step hot-fire test results, the thrusts and chamber pressures were both found nearly proportional to the oxidizer mass flow rates with different proportionalities. The overall [Formula: see text] ratio of the tests is 5.61, which is hardly shifted, unlike most hybrid rocket data reported previously. In summary, the total impulse and thrust are both linear to total oxidizer mass consumption in the range of 50–100% of [Formula: see text]. This major finding would indeed broaden the application of hybrid rocket motors to future space technology.

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Scaling of Hybrid Rocket Motors with Swirling Oxidizer Injection

Cited by 7 publications

References 32 publications

CFD Simulations of Self-pressurized Nitrous Oxide Hybrid Rocket Motors

CFD Simulations of Self-pressurized Nitrous Oxide Hybrid Rocket Motors

Experimental and numerical investigation of swirling H2O2 and polypropylene hybrid rocket motor with regenerative cooling

Experimental Investigation of Throttleable H2O2 and Polypropylene Hybrid Rocket Motor

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