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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 6. Отображено 6.
04-07-2023 дата публикации

Multi-constraint trajectory optimization method based on reference scheme local search

Номер: CN116384256A
Принадлежит:

The invention discloses a multi-constraint ballistic optimization method based on reference scheme local search, which comprises the following steps: firstly, establishing a longitudinal motion equation of a guided rocket, then determining a ballistic optimization objective function and constraint conditions, and establishing a ballistic optimization mathematical model; establishing a local search improved particle swarm optimization algorithm; and finally, trajectory iterative optimization solution and fitness evaluation are carried out. According to the method, the existing design experience can be fully utilized, local search is carried out based on the reference scheme, the optimal trajectory meeting the multi-constraint conditions such as the falling angle, the falling speed, the trajectory height, the maximum overload or normal force and the heat flux density of the guided rocket is obtained, the trajectory optimization calculation amount is greatly reduced, the trajectory optimization ...

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27-06-2023 дата публикации

Global search fast convergence multi-constraint trajectory optimization method

Номер: CN116341390A
Принадлежит:

The invention provides a global search fast convergence multi-constraint ballistic optimization method, which comprises the following steps of: forming an optimization variable by using attack angles at a plurality of discrete moments, establishing an improved particle swarm optimization algorithm, and obtaining a global optimal solution meeting multi-constraint conditions such as a falling angle, a falling speed, a ballistic height, a maximum overload or normal force, a heat flux and the like of a guided rocket. And when the fitness value of the optimization objective function is converged, obtaining an optimal attack angle sequence and an optimal trajectory. According to the method, rapid iteration convergence can be carried out under the multi-constraint conditions of the falling angle, the falling speed, the trajectory height, the maximum overload or normal force, the heat flux density and the like of the guided rocket, the optimal trajectory is obtained, algorithm prematurity and falling ...

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01-08-2023 дата публикации

Method for constructing overload ablation estimation model of large-diameter solid rocket engine

Номер: CN116522504A
Принадлежит:

The invention discloses a large-caliber solid rocket engine overload ablation estimation model construction method, which comprises the following steps: firstly, carrying out transverse overload comprehensive treatment on a solid rocket engine, and establishing an overload ablation estimation model; then according to the content of aluminum powder in the propellant, basic parameters of the ablation rate are determined, the overload ablation amount is obtained through integration, and finally the ablation condition of the heat insulation layer is evaluated. According to the method, the overload ablation rule is quantitatively expressed and can be used as a reference basis for large-caliber guided rocket trajectory design and engine design, and engineering implementation is easy.

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23-06-2023 дата публикации

Guided rocket force-heat iteration joint optimization overall design method

Номер: CN116305591A
Принадлежит:

The invention discloses a guided rocket force-heat iteration joint optimization overall design method, which comprises the following steps of: firstly, under the constraint of conditions such as range, height, falling speed, falling angle and the like of a guided rocket, enabling the control surface normal force and the total heating capacity of the rudder leading edge to be minimum and the total heating capacity of an end stagnation point to be minimum through optimization calculation; and increasing the total heating capacity of the rudder leading edge and the total heating capacity constraint of the end stagnation point by using an optimization result, carrying out iterative optimization on the normal force of the rudder surface, and subsequently increasing the normal force of the rudder surface and the total heating capacity constraint of the end stagnation point to carry out iterative optimization on the total heating capacity of the rudder leading edge. And finally, the control surface ...

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23-06-2023 дата публикации

Extra-remote guidance rocket range capability evaluation method based on sensitivity factor analysis

Номер: CN116305590A
Принадлежит:

The invention discloses an ultra-long-distance guided rocket range capability evaluation method based on sensitivity factor analysis, which comprises the following steps: firstly, establishing a differential expression between a guided rocket gliding section range and mechanical energy, and then introducing a quasi-equilibrium gliding condition and engine inner trajectory characteristics; the method comprises the following steps: establishing a guided rocket glide range analysis and evaluation formula about ballistic characteristics in an engine, then determining guided rocket range influence factors, calculating sensitivity factors of the guided rocket range influence factors, and finally analyzing the influence relationship of each factor on the guided rocket range based on the sensitivity factors. The ultra-long-distance guided rocket range capability evaluation method based on sensitivity factor analysis has the characteristics of simple form, high universality and the like, and can ...

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11-08-2023 дата публикации

Aerodynamic heat active relief control method for ultra-remote guidance rocket

Номер: CN116576735A
Принадлежит:

The invention discloses an active relief control method for aerodynamic heat of an ultra-long-distance guided rocket, and the method effectively reduces the thermal environment of a flight trajectory, reasonably disperses aerodynamic heat load and thermal protection pressure, and improves the reliability of the system on the basis of adopting a traditional rolling attitude system through the optimization of a reference trajectory under limited constraints and the design of an online active turning control strategy. Aerodynamic heat active relieving control over the ultra-long-distance guided rocket is achieved. According to the method, firstly, through reference trajectory optimization under force-heat constraint, normal overload of a projectile body and a heat flow peak value of a projectile body stagnation point are effectively limited, and on the basis, an online active turning-over triggering moment and a rolling strategy are designed; and then a posture control system is designed to ...

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