Model Based Design (MBD) is a development method that integrates the design, implementation, and verification of any system, and has grown in popularity in recent years. This method makes the simulation the main element of the development process, allowing continuous prototyping. In this article, the experimental verification of simulation model of small jet DEHA UAV is realized. Within the scope of the study, an aircraft simulation model is developed with model-based design approach using model-based design tools and simulation model was verified by novel experimental verification platforms. Model verification studies are carried out with experimental platforms for the aircraft-specific models "Mass Properties", "Actuators", "Propulsion" and "Landing Gear" in the DEHA simulation model. As a result, a simulation model verified with experimental platforms for DEHA, which is an experimental jet unmanned aerial vehicle, was obtained with a model-based design approach and tools. Thanks to the validation platforms, the accuracy of the model has been increased.