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Lawal Nasir Muhammed
Lawal Nasir Muhammed

Public Documents 2
THE ROLE OF MATERIAL SELECTION IN THE DESIGN OPTIMIZATION OF A COLD GAS PROPELLANT TA...
Ugheoke Benjamin Iyenagbe
Mustapha Shaibu

Ugheoke Benjamin Iyenagbe

and 3 more

July 29, 2024
Nanosatellites have tight constraints on mass and volume, and still require attitude control and orbital manoeuvring capabilities. This condition is amplified with variation in the propellant and pressurant storage and delivery systems. This study had its focus on the effect of material selection on the design and optimization of a cold gas propellant tank pressurized system for a nanosatellite, using SolidWorks software. The storage tank was designed using alternative material choices of Aluminium, Titanium and Nylon to achieve high strength to density ratio while operating with thermofluid properties of the working fluid at satellite heights. Th results showed that for the same amount of applied load, it is evident that aluminium could withstand a higher stress level of 245.31 MPa than titanium (171.02 MPa) but titanium suffers lesser strain (0.001399) compared with aluminium which had a strain value of 0.002917. The membrane displacement was more tolerable for Titanium (0.03029 mm) than the 0.05589 mm witnessed in Aluminium. The mass of aluminium (756.77684 g) was much higher than that of titanium (409.413 g). All these made Titanium the material of choice.
MODELLING AND SIMULATION OF THE KINEMATIC BEHAVIOUR OF THE DEPLOYMENT MECHANISM OF SO...
Lawal Nasir Muhammed
Ugheoke Benjamin Iyenagbe

Lawal Nasir Muhammed

and 2 more

April 27, 2022
Cubesats have transcended mere demonstration systems to sophisticated missions which invariably require the use of deployable solar arrays for more power generation. The kinematics of deployment have considerable influence on the stability and attitude control of a satellite, especially one with such low mass as Cubesats. This work aimed to model and simulate two-wing deployable solar array, with a sun tracking tilt function for a 1-U CubeSat, with emphasis on the deployment mechanism using materials locally available in the country. The design is such that four panels attached to two wings hinged at Y and – Y directions deploy slowly and smoothly at approximately 2 seconds where the vibration decays exponentially and approaches zero. The model of all parts, as well as the computational analysis were done with SOLIDWORKS software. The system was tested for vibration and stability using the seismic mass-spring-and-damper arrangement and the Bond Graph technique was used to conduct kinematic analysis of the mechanism. A 3-D printing was generated and tested to evaluate its operational performance. The simulated results of the model were validated with the prototype outputs with an error of 0.03% in energy supply reliability, about 400% more power generated than the body mounted solar panels of same satellite specification without a significant impact on system strength and Stability.

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