Problem DescriptionA new aircraft design requires a very high frequency (VHF) blade antenna positioned on its exterior surface to enable communication with radio control towers. The antenna, shown below, operates at 127.5 MHz and has good omnidirectional coverage in its uninstalled state. You define three potential installed positions for the antenna, and run simulations to evaluate and compare the installed antenna's performance. The aircraft is similar in design to those used by modern commercial airlines. For example, the skin of the aircraft is metal, which blocks most forms of electromagnetic radiation. The image shown below labels the aircraft's design features used throughout this example. Fuselage Wings Propellers Tail fins The cockpit is in the front of the aircraft, the passenger cabin is in the midsection, and the luggage compartment is in the rear. The three antenna positions you evaluate in this example are on the fuselage's exterior surface at the front, middle, and rear of the passenger cabin. You select these positions based on limitations from other aspects of the design. Your job is to determine which installed antenna has the best performance and if that installed antenna still has omnidirectional coverage. WorkflowThe workflow diagram below provides an overview of the example. The diagram shows the apps that you use as you perform the steps in sequence. Clicking a number in the diagram opens its corresponding step in the example.
Complete the workflow steps in the order listed. Deviation from the instructions associated with each step might cause model or scenario errors, which might prevent convergence of the simulation. |