The research is focused on the development of an Unmanned Aircraft System. One of the design process steps in the preliminary design phase is the calculation of the flight envelope for the Unmanned Aircraft System air vehicle. The results obtained will be used in the further design process. A flight envelope determines the minimum requirements for the object in Certification Specifications. The present situation does not impose any Certification Specification requirements for the class of the Unmanned Aircraft System under the development of the general European Union trend defined in the road map for the implementation of the Unmanned Aircraft System. However, operation in common European Aerospace imposes the necessity for regulations for micro class systems as well.
 N. Ludovic, Aircraft Structures Design Example. University of Liège, 2014.
 M. Sadraey, Aircraft Performance Analysis. VDM Verlag Dr. Müller, 2009.
 E. C. T. Lanand and J. Roskam, Airplane Aerodynamics and Performance. DAR Corporation, 2003.
 L. J. Bertin and R. M. Cummings, Aerodynamics for Engineers, 5th ed. Pearson/Prentice Hall, 2009.
 Federal Aviation Regulations, Part 23, Airworthiness Standards: Normal, Utility, Aerobatic, and Commuter Category Airplanes, Federal Aviation Administration, Department of Transportation, Washington, 2011.
 Federal Aviation Regulations, Part 25, Airworthiness Standards: Transport Category Airplanes, Federal Aviation Administration, Department of Transportation, Washington, 2011.
 B. L. Stevens and F. L. Lewis, Aircraft Control and Simulation, 2nd ed. Wiley-VCH Verlag GmbH, 2003.
 J. Roskam, Airplane Flight Dynamics and Automatic Flight Control. DAR Corporation, 2007
 D. Mclean, Automatic Flight Control Systems. Prentice-Hall, 1990.
 R. Nelson, Flight Stability and Automatic Control. McGraw Hill, 1989.
 B. W. McCormick, Aerodynamics, Aeronautics and Flight Mechanics. Wiley-VCH Verlag GmbH, 1979.
 B. Etkin and L. D. Reid, Dynamics of Flight-Stability and Control, 3rd ed. Wiley-VCH Verlag GmbH., 1996.
 M. Sadraey and R. Colgren, “Derivations of major coupling derivatives, and the state space formulation of the coupled equations of motion,” 6th AIAA Aviation Technology, Integration and Operations Conference (ATIO), Wichita, KS, September 25–27, AIAA-2006-7790, 2006. https://doi.org/10.2514/6.2006-7790
 J. Roskam, Airplane Design. DAR Corporation, 2003.
 A. Urbahs, V. Petrovs, M. Urbaha, and K. Carjova, “Evaluation of functional landing and taking off characteristics of the hybrid aircraft in comparison with competing hybrid air vehicles,” in Transport Means – Proceedings of the International Conference, Kaunas, 24–25 October, 2013, pp. 246–249.
 P. Jackson, Jane’s All the World’s Aircraft. Jane’s Information Group, 1996–2011.
 Joint Aviation Requirements, CS-25, Large Airplanes, European Aviation Safety Agency, 2007.