CN202814241U - A small-size rocket projectile capable of serving as an equivalent target of cruise missile radar reflection characteristics - Google Patents

Abstract

The utility model provides a small-size rocket projectile capable of serving as an equivalent target of cruise missile radar reflection characteristics. The small-size rocket projectile comprises a rocket engine and a target projectile head. The rocket engine comprises a combustion chamber, a spray pipe and a plurality of fins. The front end of the combustion chamber is connected with the target projectile head and the rear end of the combustion chamber is connected with the spray pipe. The plurality of fins are disposed on the outer circumference of the spray pipe. The target projectile head is hollow in structure, with the cross section being polygonal in shape. The outer side of the combustion chamber of the rocket engine is wrapped by metal foil. The small-size rocket projectile is characterized by attitude stabilization and commendable trajectory repeatability during flight. The small-size rocket projectile can be used for tests for maximum detectable range, target acquisition speed and tracking and identification ability of targets such as cruise missiles by super-short-range radars, can serve as a passive beacon of dynamic target detection and tracking continuity of radars, and can serve as a target projectile substitute in a joint debugging test of super-short-range antimissile weapon system, so that the test cost is reduced greatly.

Description

A kind of pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target

Technical field

The utility model relates to a kind of beacon for radar performance debugging and detection, especially relates to a kind of pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target.

Background technology

Cruise missile is the main detecting target of most air defense early warning radars.So, when radar debugging or typing check, to test as basic mechanical design feature detection, the follow-up control of the high-speed moving object of cruise missile class.When the maximum of radar being carried out the test of the main performances such as detection range, target acquisition speed, follow-up control, it is unpractical testing as target with real cruise missile, so just need to have with cruise missile radar reflection feature similarity object as being identified target.

Used target substitute is beacon when usually, carrying out radar performance debugging or detection.Beacon roughly is divided into two classes, and a class is active beacon, and this class beacon can send the discernible signal of telecommunication of radar, sets up the incidence relation of relative position with radar; Another kind of beacon is passive tag, itself can not launch the discernible signal of telecommunication of radar, but by its surperficial shape design, can reflect stronger radar echo signal, thereby sets up related with radar.This two classes beacon and GPS unite use, can carry out preferably debugging and the detection of radar static instrumentation ability and precision.At present, but passive tag is to utilize the suspended motion platforms such as balloon or model plane to carry beacon and GPS carries out radar to debugging and the detection of detectivity and the precision of dynamic object mostly.But, utilize balloon or model plane as the mode of motion platform, can not satisfy simultaneously the requirement similar with kinetic characteristic of radar area characteristic.So, can't be as the equivalent target of cruise missile type objects radar reflection feature.

Summary of the invention

In order to solve the problems of the technologies described above, the utility model provides a kind of pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target, comprise rocket engine and target missile head, described rocket engine comprises combustion chamber, jet pipe and a plurality of fin, the front end of described combustion chamber is connected with described jet pipe with the connection of described target missile head, rear end, described a plurality of fin is arranged on the excircle of described jet pipe, it is characterized in that: described target missile head is hollow structure, and its cross section is polygon; The outside, combustion chamber of described rocket engine is coated with metal forming.

In technique scheme, described target missile head is the prism that the cross section is octagon.

In technique scheme, described metal forming is the thick aluminium foil of 0.2mm.

In technique scheme, adopt screw thread to removably connect between the front end of described rocket chamber and the described target missile head.

The utility model mainly increases radar area by the shape that changes the target missile head; Increase radar area by the emission characteristics that changes the rocket engine surface, obtained following technique effect:

1. can be used as a kind of comparatively desirable cruise missile radar reflection feature equivalence target, be used for very-short-range radar to the test of maximum detectable range, target acquisition speed and the Tracking Recognition ability of the targets such as cruise missile;

2. attitude stabilization in-flight, the trajectory good reproducibility can be used as radar to the successional passive tag of dynamic object detecting and tracking;

3. can be used for the alternative target missile in the united test of super Close-in Anti-Missile Weapon Systems;

4. can significantly reduce experimentation cost.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of rocket engine in the utility model;

Fig. 3 is the hit structural representation of bullet of the utility model;

Fig. 4 is along the cutaway view of A-A direction among Fig. 3.

Mark among the figure: 1, target missile head; 2, rocket engine; 3, combustion chamber; 4, fin; 5, jet pipe; 6, metal forming.

The specific embodiment

Understand and enforcement the utility model for the ease of those of ordinary skills, below in conjunction with the drawings and the specific embodiments the utility model is described in further detail.

For satisfying super short-range detecting radar dynamic property is debugged, super short-range detecting radar is tested detection and identify distance, target acquisition speed and the follow-up control of the targets such as cruise missile, and super Close-in Anti-Missile Weapon Systems carried out the demands such as united test, need to provide a kind of equivalent target and the dynamic beaconing close with cruise missile radar reflection feature, with effective reduction experimentation cost.

As the Radar Objective Characteristics equivalence target of cruise missile type objects, if will make the radar return power P of real goal _rRadar return power P with equivalent target _vEquate, namely

P _r＝P _v

Wherein, $P_r=\frac{P_t{G}^2{\mathrm{\&lambda;}}^2{\mathrm{\&alpha;}}_r}{{\left(4\mathrm{\&pi;}\right)}^3{\mathrm{<figure-callout\; id="4"\; label="r\; r"\; filenames="HSA00000680506600012.png"\; state="\{\{state\}\}">r</figure-callout>}}_r^{}\mathrm{LsLa}},$ $P_v=\frac{P_t{G}^2{\mathrm{\&lambda;}}^2{\mathrm{\&alpha;}}_v}{{\left(4\mathrm{\&pi;}\right)}^3{r}_v^4\mathrm{LsLa}}$

In the formula, P _r---the radar return power of real goal, P _v---the radar return power of equivalent target;

P _t---radar emission power;

G---radar gain;

λ---radar wavelength;

α _r---real goal radar area, α _v---the radar area of equivalent target;

v _r---actual flight speed, v _v---the flying speed of equivalent target;

Ls---system loss, La---aerial loss.

So, real goal radar area α _rShould satisfy with the ratio of the radar area of equivalent target

$\frac{{\mathrm{\&alpha;}}_r}{{\mathrm{\&alpha;}}_v}=\frac{r_r^4}{r_v^4}$

If make the angular velocity omega of real goal _rRadar return power ω with equivalent target _vEquate, namely

ω _r＝ω _v

Wherein, ${\mathrm{\&omega;}}_r=\frac{v_r\sin \mathrm{\&alpha;}}{r_r},$ ${\mathrm{\&omega;}}_v=\frac{v_v\sin \mathrm{\&alpha;}}{r_v}$

So, actual flight speed v _rFlying speed v with equivalent target _vRatio should satisfy

$\frac{v_r}{v_v}=\frac{r_r}{r_v}$

The representative value of cruise missile is both at home and abroad at present: the about 0.1m of radar area ², about 0.8～1.5 Mach of flying speed.For satisfying the similarity relation of target radar reflective surface area and flying speed, i.e. the size of the alternative target that radar detection is arrived is identical with the signal of real goal with the signal of movement velocity.Pencil rocket bullet radar area provided by the utility model can reach 0.004m ²～0.006m ², 0.4～0.7 Mach of flying speed.

As shown in Figure 1: the pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target provided by the utility model is the 120mm bore target missile that rocket engine promotes, and is comprised of rocket engine 2 and target missile head 1.Full 864mm, weight 7kg, the about 0.005m of radar area of playing ², the about 220m/s of initial velocity, under the normal temperature condition, the vertical target dispersion at 300m place is Ey * Ez≤0.35m * 0.35m.

As shown in Figure 2: rocket engine 2 can improve to obtain at the rocket section architecture basics of PF98 formula Ф 120mm rocket projectile, namely the combustion chamber 3 on keeping its original structure, fin 4, the jet pipe 5, for increasing radar area, glass steel shell outside in the rocket chamber is coated with metal forming 6, what present embodiment coated is the thick aluminium foil of 0.2mm, thereby increases radar area.When clad metal paper tinsel not, the about 0.002m of the representative value of the radar area of this pencil rocket bullet ², can not satisfy simulation cruise missile required radar area requirement, and the representative value of the radar area of this pencil rocket bullet can reach about 0.005m when being coated with metal forming ², can satisfy required radar area requirement.Be provided with solid medicine box in combustion chamber 3,120 single hole tube grains are with medicine glue flexible adhesion is in this solid medicine box admittedly, and the rocket medicine adopts high energy high burning rate propellant GATo-3.The front end of combustion chamber 3 is connected with jet pipe 5 with target missile head 1 thread connection, rear end, is evenly equipped with fin 4 at the excircle of jet pipe 5.Produce thrust from jet pipe 5 ejections after the propellant powder ignition, after bore was left in 1 emission of drive target missile head, fin 4 opened, under aerodynamic effect, the target missile of target missile head 1 simulation rotates around playing axle, and full bullet keeps stabilized flight under the acting in conjunction of fin and rotation.

As shown in Figure 3 and Figure 4: target missile head 1 is the housing of hollow, adopts the Q235 structural steel to make, and in order to increase target area, the head construction of traditional conical plus cylindrical has been done to improve design, and body is polygonized structure, and present embodiment is the prism of octagon.

Pencil rocket resilience energy provided by the utility model enough adopts the 82mm recoilless gun to launch.Before the emission, utilize gun sight or quadrant to adjust the angle of departure.After adjusting a frame system, force home from the target missile of barrel afterbody with the simulation of pencil rocket bullet, initiator is connected with the rocket projectile electric igniter.During emission, light a fire in the mode that electricity triggers, rocket engine produces thrust, makes target missile along default ballistic flight.

Above embodiment only is a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Its concrete structure and size can be adjusted according to actual needs accordingly.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims (4)

1. pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target, comprise rocket engine and target missile head, described rocket engine comprises combustion chamber, jet pipe and a plurality of fin, the front end of described combustion chamber is connected with described jet pipe with the connection of described target missile head, rear end, described a plurality of fin is arranged on the excircle of described jet pipe, it is characterized in that: described target missile head is hollow structure, and its cross section is polygon; The outside, combustion chamber of described rocket engine is coated with metal forming.

2. the pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target according to claim 1, it is characterized in that: described target missile head is the prism that the cross section is octagon.

3. the pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target according to claim 1, it is characterized in that: described metal forming is the thick aluminium foil of 0.2mm.

4. the pencil rocket bullet that can be used as cruise missile radar reflection feature equivalence target according to claim 1 is characterized in that: adopt screw thread to removably connect between the front end of described rocket chamber and the described target missile head.

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