The geometric criteria utilization for safe cargo detachment from aircraft compartment process development

Аuthors

Nesterov V. A.^*, Semenov I. M.^**

*e-mail: kaf701mai@mail.ru
**e-mail: s1m_@mail.ru

Abstract

Increasing of both flight velocity and load factor range by cargo detachment can be used for modern aircraft needed performances insurance. As the result both aerodynamic and inertial forces acting on cargo increase during cargo forced motion as well as cargo flight into turbulent zone at the carrier vicinity. All above mention should be considered especially applying to relative light cargo detachment.
Additional complexity of the detachment process arises because cargo in the carrier compartment has folded control surfaces. This causes to the so called effect of «deep well» which requires to performing detachment process by opening compartment doors. Moreover, existing of this «well» leads to an increasing of rigidity requirement both an aircraft and a device of forced detach structure. This additional requirement adversely affect to the overall weight of the complex.
Discussed above all mode of cargo accommodation into carrier compartment provides a set of new effects because cargo has folded control surfaces. At first, the internal cargo accommodation provides stealth of e quipped carrier but simultaneously increasing the height of the aircraft structure. At second, the internal cargo accommodation reduces aerodynamic drag forces of carrier but simultaneously increases the required path cargo forced movement during its detachment
Due to these regards, the current issue for safety of modern aircrafts is one of the topical problems. Authors suggest the method optimal criteria selecting in order to provide the safe cargo detachment from the internal compartment of the aircraft. This method ensures a guaranteed collisions absence by cargo detachment with compartment, aircraft internal elements, as well as doors and other cargo. The article consists also the results of various approaches to provide safety of cargo detachment, accommodate in carrier internal compartment.

Keywords:

safe-detachment, safety criteria, dynamic model of detachment, aircraft compartment, cargo with folded control surfaces

References

Nesterov V.A., Polyanskii V.V., Semenov I.M. Izvestiya Tulskogo Gosudarstvennogo Universiteta, 2012, issue 1, pp. 42-46.