RU2549425C1 - Method of controlling rocket flight during flight tests - Google Patents

Abstract

FIELD: physics; control.

SUBSTANCE: invention relates to rocket engineering and can be used to control rocket flight during flight tests. The method includes constantly inspecting, during the entire period of time from mounting the rocket on the launching pad until launching the rocket, using an on-board radar system for remote probing the Earth, the standard and predicted destruction sites of the rocket as a result of possible accidental change in the flight trajectory; detecting, at both sites, the appearance of unauthorised objects whose existence is endangered during self-destruction of the rocket; detecting and identifying the unauthorised objects; simultaneously entering into the programmed flight control system a command to delay the self-destruction; transmitting a command to delay self-destruction of the rocket or guiding the rocket to a safe place if, at the time of launching the rocket, the unauthorised objects are still located at one of the rocket destruction sites; launching the rocket; determining current coordinates and motion parameters of the rocket; calculating the probable trajectory; generating and transmitting to the rocket commands to change the flight trajectory; constantly transmitting to the command centre data on the state of the environment on the route of test flights; predicting possible accidental changes in the flight trajectory which lead to contamination of the Earth's surface, water bodies and air; transmitting to the rocket commands to either continue flight towards the target or deviate from the trajectory and destroy the rocket in an area with minimal damage to the environment.

EFFECT: invention ensures safety for unauthorised objects located at a predicted rocket destruction site.

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Description

The invention relates to methods for controlling the spatial position of an object, and more specifically, to methods for controlling the flight of an aircraft (LA), especially during tests, and can be used in flight tests of objects such as missiles of all types and some other aircraft.

Known methods [EP 432902, class. F41G 7 / 00.1991 and EP 435589, CL F41G 7/20, 1991], in which missile flight control is performed on launchers (launchers), using a system into which information about the target is entered, and the flight path is correlated depending on its state. However, these methods do not take into account the state of the flight path, which can significantly affect the change in the flight path, and therefore these methods are not advisable to use when testing missiles.

Known methods [US 5071087, cl. F41G 7/22, 1991 and DE 3402190, CL F41G 7/22, 1985], in which the launch and flight control is carried out in accordance with the tactical software program formed by the ground computing complex, which is connected to the program memory located in the rocket.

However, in these methods, flight control is carried out according to a predetermined program, and the system does not provide for the possibility of changing the flight situation in the event of an abnormal deviation from a given trajectory, and therefore this method is not effective enough for use in testing missiles.

The closest in technical essence is the method of controlling the flight of missiles during flight tests [RU 2114374, cl. F41G 7 / 30,1996], which includes determining the current coordinates and parameters of the rocket’s movement, calculating the probable trajectory, generating and transmitting commands to the missile to change the flight path, and also continuously transmitting environmental data on the flight test route to the command post, forecast possible abnormal changes in the flight path, leading to contamination of the surface of the earth, water bodies and air, transmission of commands to the rocket either to continue the flight to the target, or to deviate from the path and destroy the rocket in the area with minimal damage to the environment

This method allows to a certain extent to ensure environmental safety during test missile flights, but only on condition that at the predicted site of the missile elimination there will not be unauthorized objects, for example, people or a herd of animals that accidentally find themselves in this place.

The objective of the proposed solution is to ensure the security of unauthorized objects located in the predicted location of the liquidation of the rocket.

The problem is solved in that in the known method of controlling the flight of a rocket during flight tests, including determining the current coordinates and parameters of the rocket’s motion, calculating the probable trajectory, generating and transmitting commands to the missile to change the flight path, and also constantly transmitting status data to the command post environment on the flight test track, forecast of possible abnormal changes in the flight path, leading to pollution of the earth's surface, water bodies and air, transmission to the rocket command either to continue the flight to the target, or to deviate from the trajectory and destroy the rocket in an area with minimal damage to the environment, using the airborne remote sensing remote sensing system (ERS), the regular and predicted missile destruction sites as a result of possible abnormal changes in the flight path are constantly examined throughout the entire period from the placement of the rocket in the launcher to its launch, the appearance of objects whose existence is endangered is recorded in both places during self-liquidation of a rocket, fix them, identify and identify those objects, register them, simultaneously enter the command to delay the moment of self-liquidation in the programmed flight system, and then, if unauthorized objects are still in one of the places of liquidation of the rocket by the time the rocket is launched, include the command to delay the self-destruction of the rocket or to withdraw it to a safe place.

Comparison with the known method of the claimed solution showed that the missile flight control technology was supplemented by observations of the remote sensing complex at the predicted missile elimination site, and a missile deferral command was introduced into the programmed flight system, which makes it possible to judge whether the “novelty” criterion is met.

The method is industrially applicable and the developed technical means meet the criterion of inventive step, since they do not explicitly follow from the prior art.

Moreover, from the last, no transformations were identified, characterized by distinctive essential features known to achieve the specified technical result.

The invention is illustrated by drawings, where in FIG. 1 is a rocket flight control algorithm in case of emergency during a rocket flight or at a rocket liquidation site, and FIG. 2 is a diagram of the implementation of the method for predicting an emergency, changing the flight path and predicting a possible change in the place of liquidation of the rocket, FIG. 3-diagram of the implementation of the method when unauthorized objects appear in the missile elimination area.

The invention consists in the following.

When testing in the event of an abnormal deviation from the flight path of the rocket, detachable parts of the carrier (steps with the remains of toxic components of rocket fuels, discharged head fairings can fall into such an area, and falling them can cause irreparable ecological damage to the environment. Meteorological conditions in the place of explosion can remain so that toxic substances released during the flight of a rocket will spread to areas that are environmentally vulnerable. assigned to control the flight of combat missiles, this situation is not necessary to take into account, but it is necessary during testing, since in cases of all kinds of abnormal deviations from the trajectory, significant environmental pollution is possible, which can be significantly reduced if the test flight is controlled taking into account the state of the environment on the flight path and at the destination — Entering environmental data on the flight path and at the missile’s destination at the field’s command post ohm and constant forecasting of the situation on the trajectory and destination allow you to change the trajectory of the missile, thus ensuring the environmental safety of the flight test by destroying missiles in an area with minimal damage to the environment.

However, when changing the place of destruction of a rocket, unauthorized objects, such as people, animals, etc., may appear there. The possibility of the presence of such objects in the place of destruction of the rocket imposes rather stringent restrictions on the choice of launch paths.

Almost any contingency situation develops over time, when the rocket partially maintains controllability and it is possible to use the on-board control system to remove the product falling point from unauthorized objects if necessary. Depending on the current position of the rocket, the location of unauthorized objects and the results of the forecast of the operability of the controls, the thrust of the remote control, the angles of the spatial orientation of the thrust of the remote control relative to the associated coordinate system of the rocket, and also the time of emergency shutdown of the remote control can be taken as control actions in the event of an emergency.

Identify unauthorized objects is necessary before the launch of the rocket. Information about the state of missile elimination sites can be obtained using the onboard radar system for remote sensing of the Earth from an aircraft during the entire period from the installation of the rocket in the launcher to its launch.

The coordinates of unauthorized objects in the places of liquidation of a rocket register in both places the appearance of unauthorized objects, the existence of which is endangered during the self-liquidation of a rocket, fix them, identify and identify these objects.

To ensure safety during missile tests, it is proposed to include in the emergency circuit a forecast of the situation on the flight path and at the place of the rocket and / or its stages fall, the coordinates of unauthorized objects, the coordinates of moving unauthorized objects and the forecast of the coordinates of moving unauthorized objects

To implement this, the possibility of delaying the liquidation of a rocket to change the trajectory of its flight and the place of liquidation can be additionally highlighted in the flight control loop.

The method is as follows.

Before testing from aircraft 1 (Fig. 1), during the entire period from the placement of the rocket in the launcher to its launch by remote sensing of the Earth 8, unauthorized objects are detected in the predicted place of impact of the rocket 2, in case of abnormal behavior or in a regular place of liquidation , upon detection of unauthorized objects, the coordinates of their movement are predicted 9.

During this period, the operability of the flight control system 3 is predicted, further the effects of the abnormal behavior of the control system on the flight path 4 and the change in the place of crash of the emergency product 5 are forecasted. In tests in the event of an abnormal deviation from the flight path of the rocket, the separated parts of the carrier (steps with residues of toxic components rocket fuels, discharged head fairings can get into an area where their fall can cause irreparable environmental damage de 6. Forecasting meteorological conditions and entering data on the state of the environment on the flight path and at the place of destruction of the rocket 7 allows you to predict situations on the flight path and at the place of impact of the rocket and / or its stages 10 and determine the control interaction, for example, introduction to a programmable system flight control team delay the moment of self-liquidation 11, the duration of which can be calculated according to one of the methods proposed by Dzhevarterom [Dzhevarter. Analytical evaluation of the prelaunch strategy. ″ Issues of rocket technology ″ 4 (184) 1970. Publishing house ″ MIR ″].

If at the time of the launch of the rocket unauthorized objects will still be in one of the places of liquidation of the rocket, they include the command to delay the self-liquidation of rocket 2 or to take it to a safe place.

Examples of specific use.

An example in case of emergency.

The rocket started from point O in FIG. 2. By means of remote sensing of the Earth (RS) using a satellite, they monitor the entire route 13 of the rocket’s flight in the exclusion zone 14 and in the liquidation zone 15 for the appearance of unauthorized objects.

At the 10th second of the missile’s flight, an abnormal situation occurred at point 13, which led to the missile deflecting 1 ° to the north. This led to a change in the trajectory of the rocket.

The forecast of the impact of the control system (SU) on the flight path of the rocket shows that changing the path by means of SU is not possible.

The forecast of the fall point of the emergency product showed a new flight path of the rocket 17, which lies outside the allocated exclusion zone 14.

A decision is being made to eliminate the rocket with minimal environmental risk.

The coordinates of unauthorized objects are predicted on the new flight path of the rocket and the location on the new flight path is determined, in which the destruction of the rocket will lead to minimal environmental losses, given the static and moving coordinates of the unauthorized objects.

The operator, having received the predicted situation, gives the command to eliminate the rocket.

The forecast of the missile elimination situation at point 15 revealed the possibility of damage to unauthorized objects located in zone 16. The duration of the missile elimination delay is determined at 15 s, necessary for the missile to leave the affected zone of unauthorized objects on a new flight path 17 and change the liquidation site 18 After that, a command is issued to remove the protection stages of the monitoring device and the rocket is undermined.

An example in the case of the appearance of unauthorized objects at the place of liquidation of a rocket.

The rocket started from point O (Fig. 3). By means of remote sensing of the Earth (ERS) using a satellite, they monitor the entire route 19 of the rocket’s flight for the appearance of unauthorized objects.

At the 15th second of the flight, the remote sensing rocket showed the presence of a moving unauthorized object 22 in the affected area 21.

The forecast of the SU influence on the rocket flight path shows that a change in the path is possible by means of an emergency engine shutdown (AED).

The forecast of the point of incidence of the product showed a possible new zone of damage to the object outside the exclusion zone 21.

A decision is made to change the flight path of the rocket using the AED.

The coordinates of unauthorized objects are predicted on the new route 23 of the missile’s flight and a new place of rocket crash with minimal environmental losses is determined, taking into account the static and moving coordinates of unauthorized objects.

The operator, having received the predicted situation, gives the AED command.

A delay of 10 seconds is issued with the issuance of an AED rocket command. After that, a command is issued to remove the protection stages of the monitoring device and the AED is carried out.

The above examples show that the claimed solution meets the criterion of "industrial applicability".

Claims (1)

A method of controlling a missile’s flight during flight tests, including determining the current coordinates and parameters of the rocket’s movement, calculating the probable trajectory, generating and transmitting commands to the missile to change the flight path, as well as constantly transmitting environmental data to the command post along the flight test route, forecast possible abnormal changes in the flight path, leading to contamination of the surface of the earth, water bodies and air, transmission of commands to the rocket either to continue the flight to the target, or to reject deviation from the trajectory and destruction of the rocket in an area with minimal environmental damage, characterized in that using the onboard radar system for remote sensing of the Earth, the regular and predicted places of destruction of the rocket as a result of a possible abnormal change in the flight path are constantly examined for the entire length of time from the installation of the rocket to the launcher before it is launched, the appearance of unauthorized objects, the existence of which is endangered when the missile’s elimination, fix them, identify and identify unauthorized objects, at the same time enter the command to delay the moment of self-liquidation into the flight control software system, and if, by the time the rocket is launched, unauthorized objects will still be in one of the missile elimination sites, include the deferred missile taking her to a safe place.

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