Device to control the aerodynamic hypersonic aircraft

 

(57) Abstract:

The invention relates to rocket and space technology. Primary use - regulation model has maneuvering in the atmosphere hypersonic aircraft. The technical result is an increase in static stability of hypersonic aircraft. Device to control the aerodynamic containing the forebody aerodynamic needle, made in the form of a thin cylindrical rod with a conical tip, it is proposed to provide additional aerodynamic needles placed in the device for the storage and supply of aerodynamic needle, and the control system. Moreover, the device for storage and supply of aerodynamic needles are invited to perform in the form of a stationary cylindrical sealed housing, in which is placed a tank of compressed gas connected through the valve to the supply channel. The end of the feed channel attached to the guiding channel and provided with a position sensor aerodynamic needle. Parallel to the axis of the channels placed in them aerodynamic needles are covered and connected through the valves with Eugenie the length of the extended part of the aerodynamic needle, that, in turn, provides a consistent coordinate of the center of pressure, the GLA and, consequently, the stability of the position of the center of pressure during his long atmospheric planning. In General, it allows to increase the static stability of the GLA in flight. 5 Il.

The invention relates to the field of rocket and space technology. Primary use - regulation model has maneuvering in the atmosphere hypersonic aircraft.

The known device for controlling the aerodynamic resistance of the aircraft [1], comprising a retractable aerodynamic surfaces (flaps, spoilers, aerodynamic skirts etc), either by changing parameters of the gas in the zones of separation and containing elements of massanella that implement the suction or blowing gas in the boundary layer and the detachment zone. The disadvantages of these devices are design complexity, most of the additional weight and instability of the aerodynamic characteristics, which reduce the accuracy.

Closest to the claimed device is a device to control the aerodynamic resistance [2], containing the nasal hour of irenie drag devices with the specified device is provided by the formation of zones of separation, close to conical (liquid cones), the pressure which is significantly less than prior devices without needles.

A significant disadvantage of this device is the instability of the aerodynamic characteristics of the aircraft, in particular the position of the center of pressure of the apparatus resulting from thermal destruction (Amhara) conical tip needle movement in the atmosphere and, consequently, changes in the length of the aerodynamic needle, which leads to changes in the static stability of the aircraft.

The aim of the invention is to increase the static stability of hypersonic aircraft.

This objective is achieved in that known device for controlling the aerodynamic containing the nose and drag the needle in the form of a thin cylindrical rod with a conical tip supplied with additional aerodynamic needles placed in the device for the storage and supply of aerodynamic needle, and the control system, and a device for the storage and supply of aerodynamic needles made in the form of a stationary cylindrical sealed housing with hosting the capacity of the channel and provided with a position sensor aerodynamic needle, and parallel to the axis of the feed channels placed in them aerodynamic needles, closed lids, equipped with locking devices and through a valve connected to a tank of compressed gas, and a control system connected to the valve, a locking device and a position sensor aerodynamic needle and the guide channel is made in the nose of the aircraft along its longitudinal axis.

Comparative analysis of the proposed device with the prototype shows that the introduction of the additional number of aerodynamic needles, devices, storage and filing, as well as system management allows you to maintain the constant length of the extended part of the aerodynamic needle that allows in-flight GLA in the atmosphere to maintain a constant position of the aerodynamic center of pressure of the apparatus despite Abgar needle due to thermal effects and, thereby, increase its static stability.

In Fig. 1 shows a General view of the device for controlling the aerodynamic resistance of the aircraft.

In Fig. 2 shows the device for the storage and supply of aerodynamic needles.

The device 4 consists of a stationary sealed enclosure 6 has a cylindrical shape, in which are placed the feed channel 7, a container for compressed gas 8 and the channels 9, closed lid 10 and is provided with a locking device 11. The longitudinal axis of the channels 9 parallel to the longitudinal axis CHAP. They will accommodate aerodynamic needle 3. Input channel 7 on the one hand connected through a valve 12 with capacity for compressed gas 8, and on the other side of the guide channel 2. The end of the feed channel 7 is equipped with a position sensor 13 aerodynamic needle 3. Channels 9 through the valve 14 is connected with a tank of compressed gas 8.

The operation of the device is as follows. On a signal from the control system 5 in accordance with the program voltage is supplied from the onboard source of power CHAP on the valve 14 of one of the channels 9. Odnawialne 9, under the pressure of the compressed gas from the tank 8 through the feed channel 7. After that, the valve 14 and the locking device 11 channel 9 trigger and lock it, preventing ingress of the second needle in the channel 7. Then actuates the valve 12 and under gas pressure from the tank 8 aerodynamic needle 3 moves along the guiding channel 2, compressing there are already the needle 3, thereby ensuring the persistence length extended to the outside part of the aerodynamic needle 3. As of Amhara tip of the needle movement on the guiding channel 2 of the second needle continues. At full extension aerodynamic needle 3 from the feed channel 7 is triggered, the position sensor 13, the locking time of the end of the needle 3 at the exit of the channel 7. The valve 12 is closed, then the valve 14 and the locking device 11 next programmatically selected channel 9 and the next needle 3 is pushed into the input channel 7. The cycle repeats. It is assumed that the length of the needle 3 is equal to the length of the guide channel 2 with extended tip. Software activation sequence locking devices 11 channels 9 provides for the maintenance of the common center of mass in the region of the longitudinal axis of the GLA, which is essential to ensure that when effektivnosti proposed device was made for the case of motion of GLA at a height h=30 km with velocity V=4500 m/s (M=15). Comparing two materials (fiberglass laminate and carbon fiber), which was made aerodynamic needle. Needle length was assumed to be equal to land=0.3 m taking into account that the total number of needles in the device for storage and supply is n=8, the total length of the aerodynamic needle is equal to L=2.4 m by the well-known characteristics of the materials and parameters of the atmosphere at the height of the calculated drift rate of the aerodynamic surface of the needle. For fiberglass it was W=5.810-4m/s, for CFRP - W=7.310-4m/s With a total length of the needle L=2.4 m battery is respectively twith=4140 (for fiberglass) and ty=3287 (for carbon fiber) that provides a stable position of the center of aerodynamic pressure GLA during long-term movement in the atmosphere.

The proposed structural diagram of a device for controlling the aerodynamic GLA can be used when developing and designing a space re-entry vehicles engaged in planning the descent in the atmosphere, as well as in the development of new types of items of combat equipment missiles.

Literature

1. Krasnov N. F. and other Aerodynamics separated flow: Uch. p the>/P>2. Fundamentals of applied aerogazodinamika. 2 kN. KN.2. The flow of bodies viscous fluid. Steering gear: Uch. guide for colleges /N. F. Krasnov, B. N. Koshevoy, C. F. Zakharchenko and others; Ed. by N. F. Krasnov. - M.: Higher school, 1991, S. 176 180... - prototype.

Device to control the aerodynamic resistance of hypersonic aircraft, containing the nose and drag the needle in the form of a thin cylindrical rod with a conical tip, characterized in that it is provided with additional aerodynamic needles placed in the device for the storage and supply of aerodynamic needle, and the control system, and a device for the storage and supply of aerodynamic needles made in the form of a stationary cylindrical sealed casing placed in it a tank of compressed gas connected through the valve to the supply channel, the end of which is attached to the guide channel and is equipped with a position sensor aerodynamic needle, and parallel to the axis of the feed channels placed in them aerodynamic needles, closed lids, equipped with locking devices and through a valve connected to a tank of compressed gas, and the system controls the channel is made in the nose of the aircraft along its longitudinal axis.

 

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