METHOD OF DESCENT OF SEPARATING PART OF LAUNCH VEHICLE Russian patent published in 2018 - IPC B64G1/62 B64G1/26 B64C15/14 

FIELD: aviation.

SUBSTANCE: invention concerns separating parts (SP) of the launch vehicles (LV) as they move along the trajectory of descent. Descent of LV SP on liquid fuel components to the specified impact area is based on the stabilization of SP, orientation and controlled movement of the SP due to energy in residual liquid fuel components on the basis of their gasification and feeding to engine unit. At that, after entering the atmosphere, the value of the balancing angle of attack, its orientation providing a transition to the falling trajectory of descent to the set aiming point, is calculated. Parameters of the spiral trajectory ("Spiral") along which the flight is carried out with the balancing angles of attack relative to the falling trajectory of descent, is calculated. At that, the transition of the SP to the "Spiral" is carried out with the achievement of values aerodynamic moment which provides possibility to manoeuvre of SP to the "Spiral" from the trajectory of the uncontrolled descent of the SP, and the lower end of the "Spiral" contacts the beginning of the retrograde portion trajectory on which a retrograde burn is completed. The movement of SP along the "Spiral" is executed by turning SP at an angular speed determined based on the condition of SP enters the beginning of retrograde portion with a minimum speed of movement of the SP masses center.

EFFECT: reduced weight of the structure, increased accuracy of landing the separating parts, reduced load on the separating parts body.

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