Scaling of Airplane Dynamic Response to Stochastic Gusts

Autor:	Anouck Girard, Pierre T. Kabamba, Johnhenri R. Richardson, Ella M. Atkins
Rok vydání:	2014
Předmět:	Engineering business.product_category business.industry Airspeed Aerospace Engineering True airspeed Stability derivatives Equivalent airspeed Airplane Continuous gusts Flight envelope Control theory Phugoid business Physics::Atmospheric and Oceanic Physics
Zdroj:	Journal of Aircraft. 51:1554-1566
ISSN:	1533-3868 0021-8669
DOI:	10.2514/1.c032410
Popis:	This paper studies the scaling of airplane dynamic response to stochastic wind gusts, with focus on the relationship between airplane size and airspeed variations. The results have applications in the design and control of small-scale aircraft for robustness with respect to turbulence. Using linearized equations of motion and the Dryden model of gusts, the paper presents analytical and numerical scaling laws for the phugoid natural frequency and damping ratio, and the variances of the airspeed and flight-path angle. The results show that small aircraft are more susceptible to high frequency gusts, that the phugoid damping ratio does not depend directly on airplane size, that the airspeed and flight-path angle variances can be parameterized by the ratio of the phugoid natural frequency to a characteristic turbulence frequency, and that the coefficient of variation of the airspeed decreases with increasing airplane size. Numerical examples validate the results using models of 11 different airplanes, particu...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6e73b1d541adbcce66b4b7b062647d3 https://doi.org/10.2514/1.c032410 Zobrazit plný text záznamu