Reducing the vertical load of the aircraft when traveling over rough runways by running characteristics of depreciation landing gear
In the article we show that to provide safe operation of aircrafts with wheeled undercarriage in the areas with poorly developed infrastructure in difficult-to-access regions, which have no prepared runways, it is necessary to decrease essentially the level of dynamic load of the airplane during take-off and landing. Preliminary calculations indicate, that the load of the plane during takes-off and landing could be essentially decreased by means of control changing of undercarriage characteristics. When these characteristics control oscillation of the airplane with back feed by trim angle or by vertical acceleration, then dynamic load could be 5 or 10...30 percent, respectively, down depending on runway roughness profile. This effect could be achieved by undercarriage damping characteristics control. Control of elasticity is inefficient because of control means delay.
 Aviatsionnye pravila. Chast 25. Normy letnoy godnosti samoletov transportnoy kategorii [Flying regulations. Part 25. Standards of transport aircrafts flying suitability]. Moscow, MAC Publ., 1994.
 Vliyanie expluatatsii samoleta c nerovnykh aerodromov na konstruktsiyu shassi [Influence of aircrafts operation from rough airfields on undercarriage]. Novosti zarubezhnoy nauki I tekhniki. Seriya Aviatsiya i raketnaya tekhnika - News of Foreign Science and Technics. Series Aviation and Rocketry. Moscow, TsAGI Publ., 1987, no. 15.
 Kutelev M.M. Matematicheskaya model sistemy samolet - shassi - vzletno-posadochnaya polosa [Mathematical model of the aircraft - undercarriage - runway system]. Metody issledovaniya pri sozdanii sovremennykh samoletov - Research Methods of Modern Aircrafts Creation, 1986, no. 2.
 Belous A.A. Amortizatsiya shassi s rychazhnoy podveskoy kolesa [Shock absorption of undercarriage with lever wheels suspension]. Trudy TsAGI - TSAGI Works, 1949, no. 678.
 Pyatin A.I. Dinamica poleta I pilotirovanie samoleta Tu-154 [Dynamic of flight and piloting of Tu-154 aircraft]. Vozdushnyi transport-Air Transport. 1994, no. 4.