Development of a Flight Analysis Program Using CFD Data for Rockets
Project no. 22020 · Status: Kapanmış · 2020
Summary
In the modern world, rocketry is an engineering field that carries out both military and scientific studies. Studies carried out especially by states and private companies have spread to a wide range with amateur rocketry activities as a result of the increasing interest. The most critical point in the development of the rocket, whether professional or amateur, is the aerodynamic design to be made before launch and the accuracy of this design. In this project, a simulation program was developed on the basic rocket activities program. Similar simulation program studies have been carried out around the world in the past and it has been observed that these programs give accurate results in rockets operating slower than speed of sound (subsonic). However, these existing programs can not give accurate results in rockets operating above the speed of sound. In the project, a simulation program has been developed that can also simulate rockets that can operate above the speed of sound (supersonic). In addition, the developed program does not require rocket design in itself and requests Computational Fluid Dynamics (CFD) data from users. Thus, users can analyse the Computer Aided Design (CAD) model of the rocket they designed with Computational Fluid Dynamics (CFD) programs and transfer them to the program without any design restrictions. For the developed program, first of all, the mechanical and electronic design of the model rocket, whose flight data will be obtained, was made. Afterwards, calculations were made based on the basic fluid mechanics rules and thus general information about the flight of the rocket was obtained. With the Computational Fluid Dynamics (CFD) analyses made at various points, the necessary data for the designed program were obtained. In the developed program, altitude, velocity, acceleration and horizontal displacement information can be calculated according to flight data. In the extent of the project, a flight computer design and production was also accomplished, thus an infrastructure was generated to obtain fundamental data such as altitude, velocity, acceleration, pressure, temperature, angle and horizontal drift of the rocket. It was aimed to test the developed software and electronical card via a model rocket launch but due to supply chain crisis caused by the Covid-19 pandemic, model rockets and rockets could not be supplied. The output data obtained from the developed program was compared by using Open Rocket program which is widely used in the model rocketry field.