Purpose
We want to receive the maximum amount of power from the rocket. Various materials, specifically metals, can interfere with the radiation pattern. The purpose of this simulation is to see what the radiation pattern of the antenna looks like inside the rocket.
Description
Antennas radiate at different strengths in different directions. An isotropic antenna is a theoretical antenna that radiates equal power in every direction. To characterize the shape of how antennas radiate, we use radiation patterns. Radiation patterns plot gain as a function of angle. For an antenna, gain is a measure of how strong an antenna radiates in a certain direction. It is calculated as 10 * log10 (Pantenna/Pisotropic), where Pantenna is the power density of the antenna in the given direction, and Pisotropic is the power density of an isotropic antenna in any direction. The units are dBi (decibels relative to an isotropic antenna).
Inputs
Radiation pattern of antenna, (defeatured) CAD of rocket, materials of rocket
Outputs
Radiation pattern of antenna inside rocket
Methods
To evaluate different methods of performing this simulation, a monopole antenna was placed 100mm from the Zephyrus nosecone, radiating into it. Simulations were run with the nosecone composed of 3 different materials: vacuum, pvc, and pec (perfect electrical conductor). Three different methods were evaluated: SBR+ with GO blockage, SBR+ without GO blockage, and HFSS using linked fields.
Where will work be done ?
Simulation Engineer local environment
Timeline
End of August (tentative)
Main Project
26-27
Purpose
We want to receive the maximum amount of power from the rocket. Various materials, specifically metals, can interfere with the radiation pattern. The purpose of this simulation is to see what the radiation pattern of the antenna looks like inside the rocket.
Description
Antennas radiate at different strengths in different directions. An isotropic antenna is a theoretical antenna that radiates equal power in every direction. To characterize the shape of how antennas radiate, we use radiation patterns. Radiation patterns plot gain as a function of angle. For an antenna, gain is a measure of how strong an antenna radiates in a certain direction. It is calculated as 10 * log10 (Pantenna/Pisotropic), where Pantenna is the power density of the antenna in the given direction, and Pisotropic is the power density of an isotropic antenna in any direction. The units are dBi (decibels relative to an isotropic antenna).
Inputs
Radiation pattern of antenna, (defeatured) CAD of rocket, materials of rocket
Outputs
Radiation pattern of antenna inside rocket
Methods
To evaluate different methods of performing this simulation, a monopole antenna was placed 100mm from the Zephyrus nosecone, radiating into it. Simulations were run with the nosecone composed of 3 different materials: vacuum, pvc, and pec (perfect electrical conductor). Three different methods were evaluated: SBR+ with GO blockage, SBR+ without GO blockage, and HFSS using linked fields.
Where will work be done ?
Simulation Engineer local environment
Timeline
End of August (tentative)
Main Project
26-27