I am designing and manufacturing a turbojet engine based on a turbocharged system and require assistance with combustion chamber sizing, systems control for fuel and airflow regulation, and afterburner sizing to enhance performance and thrust. Additionally, I am researching fuel performance, comparing petroleum-based and alternative fuels, and need recommendations for cost-effective methods of data collection during testing, such as affordable sensors for measuring combustion efficiency, emissions, and thermal output. Any advice or resources on these design and research aspects would be greatly appreciated.