# 6861 / Research on airplane performance on a grass airfield Title: Researches on airplane performance on a grass airfield Authors: Jaroslaw Pytka, Paweł Tomiło, Anna Zalewska-Tytłak, Mateusz Klepka, and Sławomir Tarkowski Abstract: The paper presents experimental researches on airfield performance of an aircraft operating from a grass runway. For this research, a methodology of field measurements was developed and measurements of take-off and landing distance were carried out on a grass airfield, taking into account important factors, such as soil cone index, soil moisture, vegetation density and atmospheric factors. The method of measuring the distance of take-off and landing ground roll based on neural network models turned out to be very convenient to use, the advantage is cheap hardware and ease of use. On the basis of the results of *CI* and *MC* measurements on two test airfields, it was concluded that the ground performance of aircraft obtained at grass airfields with different soil substrate may differ significantly. Therefore, it is necessary to distinguish grass runways in terms of soil type. Flight test results showed that the impact of green vegetation on the runway is more significant than the impact of soil strength, expressed by means of soil *CI*. The overarching goal is to implement the measurement method and obtained results into the GARFIELD system – an online information system on grass airfield conditions. Order the full paper: ISTVS members: receive three papers per year as part of your membership via the ISTVS Member Portal: --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://2023.istvs.org/submissions/papers/6861.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.