{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:13:54Z","timestamp":1760231634026,"version":"build-2065373602"},"reference-count":52,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,5,3]],"date-time":"2022-05-03T00:00:00Z","timestamp":1651536000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"NEFA (New Empennage for Aircraft) of the European Union aeronautics program (2003\u20132005)","award":["G4RD-CT-2002-00864"],"award-info":[{"award-number":["G4RD-CT-2002-00864"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Aerospace"],"abstract":"<jats:p>The variation in stability derivatives with airspeed and angles of attack and sideslip is determined using only the dependence of the aerodynamic forces and moments on the modulus and direction of the velocity. Analytic extrapolation factors are obtained for all 12 longitudinal plus 12 lateral stability derivatives of linear decoupled motion. The extrapolation factors relate the stability derivatives for two flight conditions with different airspeeds, angles of attack (AoA), and angles of sideslip (AoS). The extrapolation formulas were validated by comparison with results of computational fluid dynamics (CFD) using Reynolds-averaged Navier\u2013Stokes (RANS) equations. The comparison concerns the extrapolated full longitudinal\u2013lateral stability matrix from one landing and one takeoff condition of a V-tailed aircraft, to 10 other landing and takeoff flight cases with different airspeeds, AoAs, and AoSs. Thus, 420 comparisons were made between extrapolated stability derivatives and CFD\u2013RANS results demonstrating the achievable levels of accuracy.<\/jats:p>","DOI":"10.3390\/aerospace9050249","type":"journal-article","created":{"date-parts":[[2022,5,3]],"date-time":"2022-05-03T08:26:35Z","timestamp":1651566395000},"page":"249","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["On the Extrapolation of Stability Derivatives to Combined Changes in Airspeed and Angles of Attack and Sideslip"],"prefix":"10.3390","volume":"9","author":[{"given":"Lu\u00eds M. B. C.","family":"Campos","sequence":"first","affiliation":[{"name":"CCTAE, IDMEC, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2395-2920","authenticated-orcid":false,"given":"Joaquim M. G.","family":"Marques","sequence":"additional","affiliation":[{"name":"CCTAE, IDMEC, Departamento de Engenharia Mecatr\u00f3nica, Escola de Ci\u00eancias e Tecnologia, Universidade de \u00c9vora, Col\u00e9gio Lu\u00eds Ant\u00f3nio Verney, Rua Rom\u00e3o Ramalho, 59, 7000-671 \u00c9vora, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,3]]},"reference":[{"key":"ref_1","unstructured":"Von Mises, R. (1945). Theory of Flight, McGraw-Hill."},{"key":"ref_2","unstructured":"Perkins, C.D., and Hage, R.E. (1949). Airplane, Performance, Stability and Control, Wiley."},{"key":"ref_3","unstructured":"Rabister, W. (1960). Aircraft Dynamic Stability and Response, Pergamon."},{"key":"ref_4","unstructured":"Miele, A. (1962). Flight Mechanics: Theory of Flight Paths, Addison-Wesley."},{"key":"ref_5","unstructured":"Etkin, B. (1972). Dynamics of Atmospheric Fight, Wiley."},{"key":"ref_6","unstructured":"McRuer, D., Ashkenas, I., and Graham, D. (1973). 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