В.А. Брусов, В.Н. Наумов, Д.А. Чижов, А.А. Долгополов, Ю.Ю. Мерзликин и др.
10
Reducing the vertical load of the aircraft when traveling over
rough runways by running characteristics of depreciation
landing gear
© V.A. Brusov
1
, V.N. Naumov
2
, D.A. Chizhov
2
, A.A. Dolgopolov
1
,
Yu. Yu. Merzlikin
1
, A.S. Menshikov
1
1
Central Aerohydrodynamic Institute, NIMK TsAGI, Moscow, 105005, Russia
2
Bauman Moscow State Technical University, Moscow, 105005, Russia
In the article we show that to provide safe operation of aircrafts with wheeled undercar-
riage 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 dy-
namic load of the airplane during take-off and landing. Preliminary calculations indi-
cate, that the load of the plane during takes-off and landing could be essentially de-
creased by means of control changing of undercarriage characteristics. When these
characteristics control oscillation of the airplane with back feed by trim angle or by ver-
tical 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.
Keywords:
aircraft, runway, shock absorption, undercarriage, control, take-off, landing,
safety, dynamic load, acceleration
.
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Brusov V.A.,
Ph.D., senior researcher in Central Aerohydrodynamic Institute (TsAGI).
Specialist in the field of dynamics of air-cushion aircraft and vehicles, hydrau-lics, hy-
draulic pneumoautomatics. e-mail:
Naumov V.N.
(b. 1941) graduated from Bauman Moscow State Technical University in
1965. Dr. Sci. (Eng.), Professor, Honoured Scientist of the Russian Federation. Head of
the Tracked Vehicle and Mobile Robots De-partment at Bauman Moscow State Tech-
