CN112660394B - Guiding umbrella for reloading air-drop system - Google Patents
Guiding umbrella for reloading air-drop system Download PDFInfo
- Publication number
- CN112660394B CN112660394B CN202011617282.1A CN202011617282A CN112660394B CN 112660394 B CN112660394 B CN 112660394B CN 202011617282 A CN202011617282 A CN 202011617282A CN 112660394 B CN112660394 B CN 112660394B
- Authority
- CN
- China
- Prior art keywords
- umbrella
- rope
- band
- parachute
- bottom edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The embodiment of the invention discloses a guide umbrella for a heavy-duty air-drop system, wherein trapezoidal fabric blocks are tightly arranged and fixedly connected in the circumferential direction and the radial direction to form a circular umbrella cover, radiation reinforcing bands are uniformly distributed in the radial direction of the umbrella cover, a forming structure band is arranged on the outer circumference of the umbrella cover, and a plurality of circumferential reinforcing bands are arranged at intervals from the center to the outer circumference of the umbrella cover; the canopy forms a flexible frame structure with the radiation reinforcing band, the forming structure band and the circumferential reinforcing band; the area of the radiation reinforcing belt between the circumferential reinforcing belts is provided with a shear notch, and the structural air permeability is formed through the shear notch; one end of the umbrella rope is sewn on the forming structure belt, the other end is combined to form an umbrella rope ring, one end of the central rope is connected to the umbrella top of the guide umbrella, and the other end of the central rope is connected to the umbrella rope ring. According to the technical scheme provided by the embodiment of the invention, the opening dynamic load of the guide umbrella is reduced in a structure ventilation mode, the reliability, the stability and the inflation performance are improved, and the problems of work failure and weight increase caused by large structure ventilation capacity are solved.
Description
Technical Field
The present application relates to, but is not limited to, the technical field of guided umbrellas, and more particularly, to a guided umbrella for reloading an aerial delivery system.
Background
For reloading aerial delivery systems, it is essential to combine the use of large area parachute systems (group parachute). As the weight of the aerial delivery system increases, the area and number of the group umbrellas also increases accordingly.
In the parachute system, the group of umbrellas are started and cannot be separated from the guide parachute. The guide umbrella is lifted to pull the umbrella top of the group of umbrellas, and the guide umbrella generates pneumatic resistance to prevent the large-area main umbrella from collapsing in the process of fully inflating the umbrella cover, thereby improving the inflating consistency of the main umbrella. As a guide umbrella of a group umbrella system, the parachute is a key component for starting the group umbrella system to work, improving the group parachute opening consistency and improving the group umbrella efficiency and reliability. The parachute of this stage is the second stage parachute of the reloading aerial delivery system and is started by the first stage parachute (i.e. the drag parachute).
Because the airdrop development of the heavy-duty airdrop system is towards high altitude, high speed and large tonnage development, the airdrop systems under different working conditions put higher requirements on the parachute, including strength, resistance characteristics, weight and the like, and the parachute opening dynamic load of the parachute is controlled, the failure in the process of starting the main parachute is avoided, and the safety of the system is improved.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the technical problem, the embodiment of the invention provides a guide umbrella for reloading an aerial delivery system, so as to improve the parachute opening performance of the guide umbrella, reduce the dynamic load of parachute opening and simultaneously not reduce the drag coefficient; reliable second stage parachutes are provided for heavy equipment parachute-crowd systems.
The technical scheme of the invention is as follows: the embodiment of the invention provides a guiding umbrella for reloading an airdrop system, which comprises: a trapezoidal fabric block 9, a radiation reinforcing belt 2, a forming structure belt 3, a circumference reinforcing belt 4, an umbrella rope and a central rope 8;
the trapezoidal fabric blocks 9 are closely arranged in the circumferential direction and the radial direction and fixedly connected to form a circular umbrella coat 1, the radial direction of the umbrella coat 1 is uniformly provided with radiation reinforcing belts 2, the outer circumference of the umbrella coat 1 is provided with a forming structure belt 3, and the umbrella coat 1 is provided with a plurality of circumferential reinforcing belts 4 at intervals from the center to the outer circumference; the canopy 1, the radiation reinforcing belt 2, the forming structure belt 3 and the circumferential reinforcing belt 4 form a flexible frame structure; the area of the radiation reinforcing belt 2, which is positioned between the circumferential reinforcing belts 4, is provided with a cut, and the structural air permeability is formed through the cut;
one end of the parachute line is sewn on the forming structure belt 3, the other end of the parachute line is combined to form a parachute line ring, one end of the central line 8 is connected to the top of the guide parachute, and the other end of the central line is connected to the parachute line ring.
Optionally, in the guiding umbrella for reloading the airdrop system as described above, further comprising: a plurality of sets of bottom edge support structures 11 for connecting the radiant reinforcement belt 2 to the forming structure belt 3;
each radiant reinforcement belt 2 is connected to the forming structure belt 3 by a set of bottom edge support structures 11, each set of said bottom edge support structures 11 comprising a plurality of support belts 11a, and the plurality of support belts 11a of each set of said bottom edge support structures 11 are connected at one end to the same radiant reinforcement belt 2 and at the other end to the forming structure belt 3, respectively, in an equally spaced distribution.
Optionally, in a guide umbrella for reloading an aerial delivery system as described above, the umbrella cord is arranged to: the integral structure is formed by a connecting belt 7, a main umbrella rope 6 and an auxiliary umbrella rope 5 which are connected in sequence;
one end and the umbrella rope ring of connecting band 7 are connected, and the other end is connected with the bottom of a plurality of main umbrella ropes 6 respectively, and a set of supplementary umbrella rope 5 is connected on the top of every main umbrella rope 6, and the supplementary umbrella rope quantity in every group supplementary umbrella rope 5 is the same with the quantity that supports belt 11a in every group base bearing structure 11, just supplementary umbrella rope 5 is made up on forming structure area 3 according to predetermineeing the law, makes the 1 base of canopy outwards tensile.
Alternatively, in the guide umbrella for reloading the aerial delivery system as described above, each group of the bottom edge support structures 11 has 4 support bands 11a arranged at equal intervals, and each group of the auxiliary umbrella cords 5 connected to each main umbrella cord 6 has 4 auxiliary umbrella cords;
the left 2 support bands 11a of each set of bottom edge support structures 11 and the right 2 support bands 11a of its left adjacent bottom edge support structure 11 are attached to the circumferential reinforcing band 4 at 2 support points, and the right 2 support bands 11a and the left 2 support bands 11a of its right adjacent bottom edge support structure 11 are attached to the circumferential reinforcing band 4 at 2 support points;
two adjacent groups of auxiliary umbrella ropes 5 are respectively connected to 4 supporting points corresponding to two groups of bottom edge supporting structures 11 which are arranged at intervals.
Alternatively, in a directing umbrella for reloading an aerial delivery system as described above,
the cutting openings are specifically formed in each radiation reinforcing belt 2; alternatively, the first and second electrodes may be,
the cutting openings are specifically formed in the radiation reinforcing belts 2 which are arranged at intervals.
Alternatively, in a directing umbrella for reloading an aerial delivery system as described above,
the length of a cut formed in the auxiliary radiation reinforcing band 2 is smaller than or equal to one third of the radius of the canopy, a slit reinforcing band 10 is arranged on the cut to form a slit, and the slit reinforcing band 10 is used for preventing the fabric forming the canopy 1 from being torn and preventing the air permeability of the structure from being changed due to the influence of air flow.
Alternatively, in a directing umbrella for reloading an aerial delivery system as described above,
the length of the central rope 8 is the length from the canopy 1 for guiding the parachute to the parachute rope ring, and the central rope 8 is used for increasing the resistance coefficient of the parachute and improving the parachute opening speed of the parachute.
Alternatively, in a directing umbrella for reloading an aerial delivery system as described above,
the trapezoidal fabric block 9 is made of a low-air-permeability fabric material with the air permeability smaller than a preset air permeability threshold value and is used for improving the resistance coefficient of the guide umbrella.
The invention has the beneficial effects that: the embodiment of the invention provides a guide umbrella for a heavy-duty aerial delivery system, which is a guide umbrella for a large-area group umbrella system, wherein an umbrella cover is formed by trapezoidal fabric blocks 9 with low air permeability in a certain orderly arrangement mode, the umbrella cover, a radiation reinforcing band 2, a forming structure band 3, a circumference reinforcing band 4 and a bottom edge supporting structure 11 which are arranged on the umbrella cover form a flexible umbrella cover structure, and the radiation reinforcing band 2 is also provided with an air permeable structure; the umbrella cover structure, the auxiliary umbrella rope 5, the main umbrella rope 6, the connecting belt 7 and the central rope 8 form an integrated guiding umbrella structure. The bottom edge supporting structure 11 and the auxiliary parachute cord 5 of the canopy 1 are mainly used for quickly forming an elastic frame after the parachute canopy is pulled out, reducing wavy fluctuation of the bottom edge of the canopy, ensuring inflation of the parachute, and enabling airflow to quickly reach the top of the parachute from the bottom edge of the canopy to form a bulb shape; the auxiliary umbrella rope 5 is also used for changing an air flow field in the umbrella cover inflation process, so that the air intake state is good; the slit structure on the radiation reinforcing belt 2 is mainly used for reducing the structural strength of the parachute and reducing the dynamic load of opening the parachute; the central rope 8 is mainly used for increasing the drag coefficient of the parachute, improving the parachute opening performance of the parachute and reducing the weight of the parachute; the resistance coefficient of the parachute can be improved by the trapezoid fabric blocks with low air permeability. The guiding umbrella for reloading the airdrop system provided by the embodiment of the invention has the following advantages:
firstly, the implementation mode is simple and effective, and the practicability of the parachute with high altitude and large speed is obviously improved;
secondly, the guiding umbrella has the characteristics of obviously improved parachute opening performance, small parachute opening dynamic load, and capability of effectively reducing the structural strength of an air-drop system and the design strength of a parachute;
thirdly, the start of the heavy-duty air-drop system has the effects of anti-interference, small dynamic load, low weight, collapse prevention and the like;
fourthly, the guiding umbrella is suitable for the guiding umbrella of the air-drop system with large tonnage, large speed and high altitude, and can be universally used in a heavy air-drop system.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a leading umbrella for reloading an aerial delivery system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bottom edge support structure of a leading umbrella for reloading an aerial delivery system according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of one of the parachute cords used in the leading parachute of the reloading aerial delivery system according to the embodiment of the present invention;
FIG. 4 is a schematic view of the connecting strap of the umbrella cord shown in FIG. 3;
FIG. 5 is a schematic structural view of a main umbrella cord and a corresponding auxiliary umbrella cord in the umbrella cord provided by the embodiment shown in FIG. 3;
FIG. 6 is a schematic view of the integral connection of the cord to the canopy of the embodiment of FIG. 3;
FIG. 7 is a partial structural illustration of the connecting portion of the auxiliary umbrella cord and the lower edge support structure in an embodiment of the present invention;
FIG. 8 is a schematic view of a portion of a slotted reinforcing strip disposed on an auxiliary radiation reinforcing strip in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of a center cord configuration for a leading parachute for a reloading aerial delivery system according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a guiding umbrella for reloading an aerial delivery system, which is provided by the embodiment of the invention and is in an operating state.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The air-permeable parachute with the reasonable air-permeable structure can adapt to the air-drop condition with larger tonnage and higher parachute opening speed, the resistance characteristic of the parachute is not reduced, the dynamic load of the parachute opening can be reduced, the parachute opening performance is improved, the required pneumatic deceleration area under the same condition is reduced, and the structural strength of the whole parachute system is reduced.
The unreasonable design of ventilative structure is easy to be invalid when starting the work of crowd's umbrella system, also needs to put forward higher requirement to the structural strength of air-drop system, increases system's weight.
The embodiment of the invention provides a guide umbrella for a reloading air-drop system, which can improve the resistance coefficient and stability of the parachute by reasonably designing the ventilation structure of the parachute, and does not put higher requirements on the structural strength of the parachute.
The present invention provides that several embodiments may be combined, and that the same or similar concepts or processes may not be described in detail in connection with certain embodiments.
Fig. 1 is a schematic structural diagram of a guiding umbrella for reloading an aerial delivery system according to an embodiment of the present invention. The guiding umbrella for reloading an aerial delivery system provided by the embodiment of the invention can comprise: a trapezoidal fabric block 9, a radiation reinforcing belt 2, a forming structure belt 3, a circumference reinforcing belt 4, an umbrella rope and a central rope 8.
In the structure of the guide umbrella shown in fig. 1, the trapezoidal fabric blocks 9 are closely arranged and fixedly connected in the circumferential direction and the radial direction to form the circular canopy 1 in a compact fabric form.
The canopy 1 formed above can be provided with a radiation reinforcing band 2, a forming structure band 3 and a circumference reinforcing band 4, and the specific arrangement mode can be as follows: the radial direction of the canopy 1 is uniformly provided with the radiation reinforcing bands 2, the outer circumference of the canopy 1 is provided with a forming structure band 3, and the canopy 1 is provided with a plurality of circumferential reinforcing bands 4 at intervals from the center to the outer circumference; the canopy 1, the radiation reinforcing band 2, the forming structure band 3 and the circumferential reinforcing band 4 form a flexible frame structure together, the shape of an air inlet is ensured, excessive wave-shaped fluctuation generated in the inflating process of the parachute is avoided, and air flow is transmitted to the top of the parachute more quickly.
The setting mode of the air permeable structure of the guide umbrella provided by the embodiment of the invention is as follows: the area of the radiation reinforcing band 2 between the circumferential reinforcing bands 4 is provided with a cut, and the air permeability is formed through the cut, so that the change of the air permeability of the structure is prevented.
In the embodiment of the invention, one end of the umbrella rope is sewn on the forming structure belt 3, the other end is combined to form an umbrella rope ring, one end of the central rope 8 is connected to the top of the guide umbrella, and the other end of the central rope is connected to the umbrella rope ring.
Optionally, the guiding umbrella provided in the embodiment of the present invention may further include: sets of bottom edge support structures 11 for connecting the radiation reinforcing strip 2 to the forming structure strips 3. Fig. 2 is a schematic structural diagram of a bottom edge support structure of a leading umbrella for reloading an aerial delivery system according to an embodiment of the present invention.
Referring to fig. 1 and 2, each of the radiant reinforcing belts 2 is connected to the forming structure belt 3 by a set of bottom edge support structures 11, each set of bottom edge support structures 11 includes a plurality of support belts 11a, and one end of the plurality of support belts 11a of each set of bottom edge support structures 11 is connected to the same radiant reinforcing belt 2, and the other end is connected to the forming structure belt 3 in an equally spaced distribution, respectively. FIG. 2 shows an example in which each set of bottom edge support structures 11 includes 4 support bands 11a, and the support bands 11a of two adjacent sets of bottom edge support structures 11 have a common supporting point.
Fig. 3 is a schematic structural diagram of an umbrella rope in a guide umbrella for reloading an aerial delivery system according to an embodiment of the present invention, fig. 4 is a schematic structural diagram of a connection strap in the umbrella rope according to the embodiment shown in fig. 3, and fig. 5 is a schematic structural diagram of a main umbrella rope and a corresponding auxiliary umbrella rope in the umbrella rope according to the embodiment shown in fig. 3. Referring to the umbrella cord structure shown in fig. 3 to 5, it can be seen that the umbrella cord in the embodiment of the present invention is configured as follows: the umbrella is an integral structure formed by a connecting belt 7, a main umbrella rope 6 and an auxiliary umbrella rope 5 which are connected in sequence.
As shown in fig. 3, in the embodiment of the present invention, one end of the connecting band 7 is connected to the umbrella cord ring, the other end is connected to the bottom ends of the main umbrella cords 6, the top end of each main umbrella cord 6 is connected to a set of auxiliary umbrella cords 5, the number of the auxiliary umbrella cords in each set of auxiliary umbrella cords 5 is the same as the number of the supporting bands 11a in each set of bottom edge supporting structures 11, and the auxiliary umbrella cords 5 are sewn on the forming structure band 3 according to a preset rule, so that the bottom edge of the canopy 1 is stretched outwards, and the drag coefficient is increased.
In one embodiment of the present invention, each set of bottom edge support structures 11 has 4 support bands 11a equally spaced apart, and each set of auxiliary umbrella cords 5 associated with each main umbrella cord 6 has 4 auxiliary umbrella cords, such as 1-1, 1-2, 1-3, and 1-4 in FIGS. 3 and 5.
Fig. 6 is a schematic view showing the overall connection relationship of the parachute cords and the canopy in the embodiment shown in fig. 3, and fig. 7 is a partial structural view showing the connection portion of the auxiliary parachute cords and the lower side support structure in the embodiment of the present invention. Referring to FIGS. 2 to 7, the left 2 support bands 11a of each set of bottom edge support structures 11 and the right 2 support bands 11a of its left adjacent bottom edge support structure 11 are attached to the circumferential reinforcing band 4 at 2 support points, and the right 2 support bands 11a and the left 2 support bands 11a of its right adjacent bottom edge support structure 11 are attached to the circumferential reinforcing band 4 at 2 support points.
Two adjacent groups of auxiliary umbrella ropes 5 are respectively connected to 4 supporting points corresponding to two groups of bottom edge supporting structures 11 which are arranged at intervals; it should be noted that the auxiliary umbrella strings 5 and the bottom side supporting structures 11 are not in a one-to-one combination relationship, and if one group of the bottom side supporting structures 11 is completely connected with one group of the auxiliary umbrella strings 5 correspondingly, the two groups of the bottom side supporting structures 11 adjacent to each other on the left and right of the group of the bottom side supporting structures 11 are not specifically connected with the group of the auxiliary umbrella strings 5 correspondingly, but are connected with the two groups of the auxiliary umbrella strings 5 adjacently through the common supporting point of the bottom side supporting structures 11 adjacent to each other.
In one implementation of the embodiment of the present invention, a cut is made, for example, in each radiant reinforcing band 2.
In an implementation manner of the embodiment of the present invention, the notches may be formed in the radiation reinforcing strips 2 arranged at intervals, for example, one notch is formed at every other radiation reinforcing strip 2, as shown in fig. 1, or the manner of forming the notches at intervals may be adjusted according to requirements.
In the specific implementation of the embodiment of the invention, the length of the cutting opening formed on the auxiliary radiating reinforcing belt 2 is less than or equal to one third of the radius of the canopy, the cutting opening is provided with the slotted reinforcing belt 10 to form a slot, and the slotted reinforcing belt 10 is used for preventing the fabric forming the canopy 1 from being torn and preventing the air permeability of the structure from being changed due to the influence of air flow. Fig. 8 is a partial schematic view of a slit reinforcing band provided in an auxiliary radiation reinforcing band according to an embodiment of the present invention.
It should be noted that, in the embodiment of the present invention, the length of the central rope 8 is the length from the canopy 1 for guiding the umbrella to the parachute rope loop, and the central rope 8 is used for increasing the drag coefficient of the parachute and increasing the parachute opening speed. As shown in fig. 9, a schematic structural diagram of a center rope in a guide umbrella for reloading an aerial delivery system according to an embodiment of the present invention, an upper diagram of fig. 9 is an overall structure of the center rope, and a lower diagram of fig. 9 is a cross-sectional view of the center rope, it can be seen that the center rope may be configured as a multilayer structure according to structural requirements.
As shown in fig. 10, a schematic structural diagram of a guiding umbrella for reloading an aerial delivery system according to an embodiment of the present invention is in an operating state.
The embodiment of the invention provides a guide umbrella for a heavy-duty aerial delivery system, which is a guide umbrella for a large-area group umbrella system, wherein the canopy of the guide umbrella is formed by trapezoidal fabric blocks 9 with low air permeability in a certain orderly arrangement mode, the canopy, a radiation reinforcing belt 2, a forming structure belt 3, a circumference reinforcing belt 4 and a bottom edge supporting structure 11 which are arranged on the canopy form a flexible canopy structure, and the radiation reinforcing belt 2 is also provided with an air permeable structure; the canopy structure, the auxiliary umbrella rope 5, the main umbrella rope 6, the connecting belt 7 and the central rope 8 form an integrated guiding umbrella structure. The bottom edge supporting structure 11 and the auxiliary parachute cord 5 of the canopy 1 are mainly used for quickly forming an elastic frame after the parachute canopy is pulled out, reducing wavy fluctuation of the bottom edge of the canopy, ensuring inflation of the parachute, and enabling airflow to quickly reach the top of the parachute from the bottom edge of the canopy to form a bulb shape; the auxiliary umbrella rope 5 is also used for changing an air flow field in the umbrella cover inflation process, so that the air intake state is good; the slit structure on the radiation reinforcing band 2 is mainly used for reducing the structural strength of the parachute and reducing the dynamic load of opening the parachute; the central rope 8 is mainly used for increasing the drag coefficient of the parachute, improving the parachute opening performance of the parachute and reducing the weight of the parachute; the resistance coefficient of the parachute can be improved by the trapezoid fabric blocks with low air permeability. The guiding umbrella for reloading the air-drop system provided by the embodiment of the invention has the following advantages:
firstly, the implementation mode is simple and effective, and the practicability of the parachute with high altitude and large speed is obviously improved;
secondly, the guiding umbrella has the characteristics of obviously improved parachute opening performance, small parachute opening dynamic load, and capability of effectively reducing the structural strength of an air-drop system and the design strength of a parachute;
thirdly, the start of the heavy-duty air-drop system has the effects of anti-interference, small dynamic load, low weight, collapse prevention and the like;
fourthly, the guiding umbrella is suitable for the guiding umbrella of the air-drop system with large tonnage, large speed and high altitude, and can be universally used in a heavy air-drop system.
The following describes in detail an implementation of a guiding umbrella for reloading an aerial delivery system according to an embodiment of the present invention with a specific implementation example.
Referring to the leading umbrella for reloading an aerial delivery system shown in fig. 1 to 10, the embodiment provides a leading umbrella that may include: the umbrella comprises an umbrella coat 1 sewn by trapezoidal fabric blocks 9, a radiation reinforcing band 2, a forming structure band 3, a circumferential reinforcing band 4, an auxiliary umbrella rope 5, a main umbrella rope 6, a connecting band 7, a central rope 8, a slotted reinforcing band 10 and a bottom edge supporting structure 11.
The canopy 1 is a main part of the parachute generating air resistance and is used for starting the group parachute system to work and ensuring that the large-area parachute does not top the tower. The umbrella coat 1 is made of a plurality of trapezoidal block fabrics 9 by sewing in a certain ordered arrangement mode to form a compact fabric circular umbrella coat 1; the material of the trapezoid block fabric 9 is a material with small air permeability, and the resistance coefficient is larger; the radiation reinforcing band 2, the circumference reinforcing band 4 and the forming structure band 3 are arranged on the canopy 1, a flexible frame structure is formed together, the shape of an air inlet is guaranteed, excessive wave fluctuation generated in the inflating process of the parachute is avoided, and air flow is transmitted to the top of the parachute more rapidly.
The main umbrella rope 6, the auxiliary umbrella rope 5 and the connecting belt 7 are of an integrated structure; the auxiliary umbrella rope 5 is sewn on the forming structure belt 3 according to the rule, so that the bottom edge of the umbrella coat 1 is stretched outwards, and the resistance coefficient is increased; the area of the radiation reinforcing belt 2 between the circumferential reinforcing belts 4 is provided with a cut to form the air permeability of the structure, so that the change of the air permeability of the structure can be prevented; the radiation reinforcing band 2 is provided with a cut with the radius not larger than one third, and the cut is provided with a slit reinforcing band 10 which can prevent the fabric from being torn and prevent the air permeability of the structure from changing due to air flow.
When the parachute in the embodiment works during opening, the initial speed is high, the parachute is impacted by airflow, the gaps on the radiation reinforcing band 2 are opened, and the dynamic load of opening the parachute is reduced; the speed is reduced, the gap is closed, and the resistance coefficient is increased; the length of the central rope 8 is set to guide the umbrella cover 1 to the umbrella rope ring; when the parachute works, the two rope rings of the central rope 8 are connected to the top of the parachute and the rope rings of the parachute respectively, the central rope 8 increases the resistance coefficient of the parachute, and the parachute opening speed of the parachute is improved.
The guiding umbrella structure provided by the embodiment of the invention can be universally used for guiding umbrellas of a large-tonnage umbrella group system, the opening dynamic load of the guiding umbrella is reduced by adopting a special structure ventilation mode, the reliability, the stability and the inflation performance are improved, and the problems of work failure and weight increase caused by large structure ventilation capacity are solved. In addition, the technical scheme of the embodiment of the invention can realize the increase of the resistance characteristic of the guide umbrella without increasing the area and the weight of the guide umbrella, and does not put higher requirements on the structural strength of the guide umbrella and the system.
By adopting the technical scheme provided by the embodiment of the invention, the application range of the guide umbrella can be enlarged, the material selection range of the guide umbrella can be enlarged, the design strength, the weight, the design cost and the processing difficulty of the guide umbrella can be reduced, the efficiency is higher, and the reliability is higher. It is suitable for high altitude and subsonic air drop. The guiding umbrella can be universally used for a heavy-duty aerial delivery system parachute system which is matched with a large-scale conveyor and is 10 tons or more; and the reliability of the similar air-drop system is improved.
Although the embodiments of the present invention have been described above, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A directing umbrella for reloading an aerial delivery system, comprising: a trapezoidal fabric block (9), a radiation reinforcing band (2), a forming structure band (3), a circumference reinforcing band (4), an umbrella rope and a central rope (8);
the circular umbrella cloth (1) is formed by closely arranging and fixedly connecting the trapezoid fabric blocks (9) in the circumferential direction and the radial direction, radiation reinforcing belts (2) are uniformly distributed in the radial direction of the umbrella cloth (1), a forming structure belt (3) is arranged on the outer circumference of the umbrella cloth (1), and a plurality of circumferential reinforcing belts (4) are arranged at intervals from the center to the outer circumference of the umbrella cloth (1); the canopy (1), the radiation reinforcing band (2), the forming structure band (3) and the circumferential reinforcing band (4) form a flexible frame structure; the area of the radiation reinforcing belt (2) between the circumferential reinforcing belts (4) is provided with a shear opening, and the structural air permeability is formed through the shear opening;
one end of the umbrella rope is sewn on the forming structure belt (3), the other end of the umbrella rope is combined to form an umbrella rope ring, one end of the central rope (8) is connected to the top of the umbrella guiding the umbrella, and the other end of the central rope is connected to the umbrella rope ring;
the guiding umbrella for reloading an aerial delivery system further comprises: a plurality of sets of bottom edge support structures (11) for connecting the radiant reinforcement belt (2) with the forming structure belt (3);
each radiant reinforcing band (2) is connected to the forming structure band (3) through a group of bottom edge supporting structures (11), each group of bottom edge supporting structures (11) comprises a plurality of supporting bands (11 a), one end of each group of bottom edge supporting structures (11) of the plurality of supporting bands (11 a) is connected to the same radiant reinforcing band (2), and the other end of each group of bottom edge supporting structures is connected to the forming structure band (3) in an equally-spaced distribution mode;
the umbrella rope is arranged as follows: the integral structure is formed by a connecting belt (7), a main umbrella rope (6) and an auxiliary umbrella rope (5) which are connected in sequence;
the one end and the umbrella rope ring of connecting band (7) are connected, and the other end is connected with the bottom of a plurality of main umbrella ropes (6) respectively, and a set of supplementary umbrella rope (5) are connected on the top of every main umbrella rope (6), and the supplementary umbrella rope quantity in every group supplementary umbrella rope (5) is the same with the quantity that supports area (11 a) in every group base bearing structure (11), just supplementary umbrella rope (5) are made up on forming structure area (3) according to predetermineeing the law, make full-flat shirt (1) base outwards tensile.
2. Guide umbrella for reloading an aerial delivery system according to claim 1, characterized in that each group of bottom edge support structures (11) has 4 support bands (11 a) arranged at equal intervals, with 4 auxiliary umbrella cords in each group of auxiliary umbrella cords (5) connected to each main umbrella cord (6);
the left 2 support bands (11 a) of each set of bottom edge support structures (11) and the right 2 support bands (11 a) of its left adjacent bottom edge support structure (11) are attached to the circumferential reinforcing band (4) at 2 support points, and the right 2 support bands (11 a) and the left 2 support bands (11 a) of its right adjacent bottom edge support structure (11) are attached to the circumferential reinforcing band (4) at 2 support points;
two adjacent groups of auxiliary umbrella ropes (5) are respectively connected to 4 supporting points corresponding to two groups of bottom edge supporting structures (11) which are arranged at intervals.
3. A guide umbrella for reloading an aerial delivery system according to claim 2,
the shearing openings are specifically formed in each radiation reinforcing belt (2); alternatively, the first and second electrodes may be,
the cutting openings are arranged on the radiation reinforcing belts (2) arranged at intervals.
4. A guide umbrella for reloading an aerial delivery system according to claim 3,
the length of a cut formed in the radiation reinforcing band (2) is smaller than or equal to one third of the radius of the canopy, a slit reinforcing band (10) is arranged on the cut to form a slit, and the slit reinforcing band (10) is used for preventing the fabric forming the canopy (1) from being torn and preventing the air permeability of the structure from being changed due to the influence of air flow.
5. Guiding umbrella for reloading an aerial delivery system according to any of the claims 1 to 4,
the length of center rope (8) is the length of canopy (1) to the parachute cord ring of guide umbrella, center rope (8) are used for increasing the drag coefficient of parachute, improve the parachute-opening speed of umbrella.
6. Leading umbrella for reloading an aerial delivery system according to any of claims 1 to 4,
the trapezoidal fabric block (9) is made of a low-air-permeability fabric material with the air permeability smaller than a preset air permeability threshold value and is used for improving the resistance coefficient of the guide umbrella.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617282.1A CN112660394B (en) | 2020-12-30 | 2020-12-30 | Guiding umbrella for reloading air-drop system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617282.1A CN112660394B (en) | 2020-12-30 | 2020-12-30 | Guiding umbrella for reloading air-drop system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112660394A CN112660394A (en) | 2021-04-16 |
| CN112660394B true CN112660394B (en) | 2022-11-01 |
Family
ID=75411434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011617282.1A Active CN112660394B (en) | 2020-12-30 | 2020-12-30 | Guiding umbrella for reloading air-drop system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112660394B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455083A (en) * | 2021-12-28 | 2022-05-10 | 北京空间机电研究所 | Structure variable air permeability conical ribbon umbrella and processing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3506225A (en) * | 1968-10-15 | 1970-04-14 | Snyder Stephen Louis | Opening shock inhibitor for parachutes |
| CN201002593Y (en) * | 2006-12-16 | 2008-01-09 | 冯昌荣 | Variable brake parachute |
| JP5080372B2 (en) * | 2008-06-11 | 2012-11-21 | 藤倉航装株式会社 | Emergency parachute |
| CN203555267U (en) * | 2013-11-15 | 2014-04-23 | 航宇救生装备有限公司 | Vortex-sail-type rotating parachute |
| CN107600431B (en) * | 2017-09-22 | 2024-03-08 | 襄阳宏伟航空器有限责任公司 | Umbrella top structure with umbrella on disc seam |
| CN211592963U (en) * | 2019-10-29 | 2020-09-29 | 航宇救生装备有限公司 | General aircraft lifesaving parachute based on little ventilative material |
-
2020
- 2020-12-30 CN CN202011617282.1A patent/CN112660394B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112660394A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112660394B (en) | Guiding umbrella for reloading air-drop system | |
| AU723277B2 (en) | Device to control inflation characteristics of parachutes | |
| CN211592963U (en) | General aircraft lifesaving parachute based on little ventilative material | |
| US2759694A (en) | Parachute canopy | |
| US7997535B2 (en) | Life parachute especially for ultra-lightweight aircrafts | |
| US3222016A (en) | Variable porosity fabric for aeronautical decelerator | |
| US3173636A (en) | Parachute | |
| US3136508A (en) | Parachute | |
| CN107600431B (en) | Umbrella top structure with umbrella on disc seam | |
| US6276638B1 (en) | Parachutes | |
| US6056241A (en) | Thin film parachute with continuous lateral reinforcing fibers | |
| US20070152102A1 (en) | High drag parachute with radial slots providing porosity distribution and enhanced stability without forward speed | |
| US3298640A (en) | Parachute | |
| US6328262B1 (en) | Method for forming a parachute and a parachute formed thereby | |
| US2724567A (en) | Multi-airfoil parachute | |
| US2319286A (en) | Sheet arrangement for the stretching of surfaces | |
| US3245639A (en) | Reefing means for parachutes | |
| US3758056A (en) | Parachutes | |
| CN107238330B (en) | Rotary umbrella | |
| US3452951A (en) | High drag efficiency parachute canopy | |
| US3218007A (en) | Parachute stability improvements | |
| US2980371A (en) | Constant disreefing means for parachutes | |
| CN109436339B (en) | Parachute capable of reducing parachute opening impact | |
| US4355774A (en) | Parachute inflation assistance device | |
| CN111169644A (en) | Low-cost delivery umbrella and processing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |