Flight Test of the Phoenix-1A Hybrid Rocket

Geneviève, Bernard; Pitot, Jean; Brooks, Michael J.; Chowdhury, Seffat; Veale, Kirsty L.; Balmogim, Udil; Leverone, Fiona; Mawbey, Robert

doi:10.2514/6.2015-4047

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Design and test data of rocket motors is necessary to evaluate the use of the defined model parameters, and thus the authors based such inputs on design characteristics associated with sounding rockets of the University of KwaZulu-Natal's Phoenix Hybrid Sounding Rocket Program (Balmogim et al 2015;Genevieve et al 2012Genevieve et al , 2015Leverone et al 2013Leverone et al , 2019. These vehicles are at varying stages of development and are designed with a large variety of desired apogees and research outcomes.…”

Section: Fuel Grain Geometrymentioning

confidence: 99%

“…The various geometrical and performance properties of these vehicles were determined using the internally developed Hybrid Rocket Performance Simulator (HYROPS). More information on the design process and the use of HYROPS can be found in the references Balmogim et al (2015), Genevieve et al (2015) and Leverone et al (2013). The ratio of the outer diameter (OD) (b) to the inner diameter (ID) (a) (OD/ID ratio) has been used as a general design rule to reduce internal stresses of the grain as per Fig.…”

Section: Fuel Grain Geometrymentioning

confidence: 99%

“…These scenarios included actual pressure data from available hot-fire tests, the modelled theoretical pressure data based on the HYROPS software estimations (including an estimated pressure spike), and a reduced pressure profile where the chamber pressure does not exceed the design pressure (excluding the pressure spike). All pressure profiles are available in references Balmogim et al (2015), Genevieve et al (2012Genevieve et al ( , 2015 and Leverone et al (2013Leverone et al ( , 2019. It is important to note that the pressure profiles and start-up transients greatly affect the ability of paraffin wax fuel grains to withstand the loads applied, as the material is noticeably strain-rate dependent.…”

Section: Model Preparationmentioning

confidence: 99%

“…The propellant combination of interest in this research is SASOL 0907 paraffin wax as fuel with nitrous oxide as the oxidiser. This propellant combination is utilised as the primary propulsion mechanism for the University of KwaZulu-Natal's Phoenix Hybrid Sounding Rocket Program (Balmogim et al 2015;Genevieve et al 2012Genevieve et al , 2015Leverone et al 2013Leverone et al , 2019. Additionally, the Phoenix program plans to utilise aluminium powder additives in the paraffin wax at varying percentages to improve the performance and density specific impulse of the motors (Maharaj et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Explicit Modelling of the Ignition Transient Structural Response of a Paraffin Wax Hybrid Rocket Motor Fuel Grain

Veale

Adali

Pitot

et al. 2021

J. Aerosp. Technol. Manag.

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Paraffin wax has been identified as a hybrid rocket motor fuel, which offers enhanced regression rates and improved combustion performance. While various investigations into the performance of this class of fuels are being conducted around the world, the consideration of its structural performance is often overlooked. The research presented here establishes a simplified, yet accurate method of defining the structural performance of a paraffin wax hybrid fuel grain to be introduced early in the design phase of a motor. The use of the Johnson-Cook (J-C) material model has been verified to work within the "low speed" ignition range experienced in paraffin wax/N 2 O hybrid motors, and therefore is used to predict failure in a variety of motors. The resultant stress profiles within the grains indicate that the grain outer to inner diameter (OD/ID) ratio, as well as the outer diameter (OD) itself, play an important role in the grain ability to withstand the loading conditions applied. Additionally, the grain structural properties, and the stiffness of the combustion chamber affect the severity of the internal stresses in the grain. The feasibility of large-scale pure paraffin wax grains without structural enhancement additives is thus found to be poor. Fuel additives should be considered for structural enhancement.

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Section: Fuel Grain Geometrymentioning

confidence: 99%

Section: Fuel Grain Geometrymentioning

confidence: 99%

Section: Model Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Explicit Modelling of the Ignition Transient Structural Response of a Paraffin Wax Hybrid Rocket Motor Fuel Grain

Veale

Adali

Pitot

et al. 2021

J. Aerosp. Technol. Manag.

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Non-landing vehicle-mounted electro-optical theodolite deformation measurement method using inertial sensors

Luo

Xu²,

Pan

et al. 2019

Meas. Sci. Technol.

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Working on a vehicle platform, an electro-optical (EO) theodolite’s measurement accuracy deteriorates due to platform deformation caused by external forces, such as the acceleration and deceleration of the EO theodolite, wind and people walking on the platform. This paper presents a vehicle platform deformation measurement method using inertial sensors. The necessity of the vehicle platform’s deformation measurement is thoroughly analyzed. An inertial sensor calibration method is then proposed so that the platform’s three-dimensional deformation can be calculated by the inertial sensors’ axes outputs. Experiments show that the measurement resolution reaches 2” and the measurement error is less than 4”. The proposed method does not require a reference device, and hence largely improves the measurement system’s stability and adaptability.

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