CN209934081U

CN209934081U - Fixed wing model airplane

Info

Publication number: CN209934081U
Application number: CN201920480495.0U
Authority: CN
Inventors: 马杰
Original assignee: Chengdu Craftsman Star Technology Co Ltd
Current assignee: Chengdu Craftsman Star Technology Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-14
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a fixed wing model airplane, including fuselage, the tail pipe of connection at the fuselage afterbody, install the horizontal tail at the tail pipe rear end, install the plane flight screw on fuselage or tail pipe, still include the steering wheel of installation at the tail pipe afterbody, the steering wheel passes through the rocking arm with horizontal tail and links to each other, the rocking arm is cylindric, still is provided with the jack on the horizontal tail, and the rocking arm is the toper structure that the rear end diameter is less than the front end diameter, the jack is the bell mouth that the front end diameter is greater than the terminal diameter, and in the process that the rocking arm inserts the jack, rocking arm and jack can form the interference relation of connection; the fastening bolt is in threaded connection with the horizontal tail, and a threaded hole for connecting the fastening bolt is communicated with the jack; under the interference connection relation, in the process that the fastening bolt goes deep into the threaded hole, the fastening bolt applies pressure to the side face of the rocker arm through the end part of the fastening bolt, and the rocker arm and the horizontal tail are fixed. The fixed wing model airplane has simple structure, convenient disassembly and assembly of the horizontal tail, and compact connection with the steering engine after the installation of the horizontal tail.

Description

Fixed wing model airplane

Technical Field

The utility model relates to an unmanned air vehicle technique field especially relates to a fixed wing model aeroplane and model ship.

Background

At present, to unmanned aerial vehicle model, roughly can divide into fixed wing unmanned aerial vehicle, rotor unmanned aerial vehicle, wherein, fixed wing unmanned aerial vehicle generally includes fuselage, wing, fin, flat flight screw and control system etc. the fin generally includes horizontal tail and vertical fin, and the elevator on the horizontal tail is used for controlling unmanned aerial vehicle's lift.

The model aeroplane and model ship aircraft is the important means of flight fan flight study, and the flight fan not only can be skilled through its normal flight that controls unmanned aerial vehicle, can know unmanned aerial vehicle's structural component, flight principle etc. simultaneously. Aiming at the structural design of the fixed-wing model airplane, in the prior art, like the technical scheme provided by the invention patent application with the application number of 201510685505.0, the steering engine system for driving the horizontal tail to move is complex in structure, so that the tail weight of the fixed-wing model airplane is increased, and the assembly difficulty of the fixed-wing model airplane is increased.

SUMMERY OF THE UTILITY MODEL

In the prior art that provides to above-mentioned, like the technical scheme that the invention patent application that application number is 201510685505.0 provided, the steering wheel system structure for driving horizontal tail motion is complicated, so not only can increase the afterbody weight of fixed wing model aeroplane and model ship, also increased the technical problem of the equipment degree of difficulty of fixed wing model aeroplane and model ship simultaneously, the utility model provides a fixed wing model aeroplane and model ship. The fixed wing model airplane has simple structure, convenient disassembly and assembly of the horizontal tail, and compact connection with the steering engine after the installation of the horizontal tail.

To the above problem, the utility model provides a pair of fixed wing model aeroplane and model ship solves the problem through following technical essential: a fixed wing model airplane comprises a fuselage, a tail pipe connected to the tail of the fuselage, a horizontal tail installed at the rear end of the tail pipe, a horizontal flying propeller installed on the fuselage or on the tail pipe, and a steering engine installed at the tail of the tail pipe, wherein the steering engine is connected with the horizontal tail through a rocker arm, the rocker arm is cylindrical, the horizontal tail is also provided with an insertion hole, the rocker arm is of a conical structure, the diameter of the rear end of the conical structure is smaller than that of the front end of the conical structure, the diameter of the front end of the conical structure is larger than that of the tail end of the conical structure, and the rocker arm and the insertion hole can form an interference connection;

the fastening bolt is in threaded connection with the horizontal tail, and a threaded hole for connecting the fastening bolt is communicated with the jack; under the interference connection relation, in the process that the fastening bolt goes deep into the threaded hole, the fastening bolt applies pressure to the side face of the rocker arm through the end part of the fastening bolt, and the rocker arm and the horizontal tail are fixed.

In the scheme, the steering engine is used for driving the rocker arms to swing up and down, and the rocker arms swing up and down to drive the horizontal tail to swing up and down, so that the horizontal tail posture is adjusted, and the purpose of controlling the flight posture of the model airplane is achieved. In this scheme, the preferred electro-magnet form that adopts of concrete implementation form of steering wheel to make the rocking arm obtain corresponding action under the simplest prerequisite of structure: the rocker arm swings up and down under the electromagnetic force through the power supply control of the electromagnet so that the horizontal tail obtains the required posture. If the steering engine includes the casing and installs two electromagnet coils in the casing, one of them electromagnet coil installs in the upper end of casing, another electromagnet coil installs the lower extreme at the casing, the rocking arm is continuous through the rear end of pivot with the casing, and two electromagnet coils all are located the front end of rocking arm, the front end of rocking arm extends to the fuselage side so that arbitrary electromagnet coil homoenergetic adsorbs the front end of rocking arm, the rear end of rocking arm is as being used for with the link of tail-to-tail connection, the rocking arm is just, when the counter-rotation is just for required rocking arm up-and-down swing when the electromagnet coil effect is down around the pivot. The limit is that rocking arm and jack can form the relative dimension of interference connection relation aim at injecing rocking arm and jack, and the rear end of rocking arm is at the in-process of inserting the jack by the front end of jack promptly, and rocking arm and horizontal tail can form the tight fit connection relation, after forming the tight fit connection relation, through the locking of fastening bolt to rocking arm and horizontal tail, can realize steering wheel and the reliable connection of horizontal tail.

By adopting the scheme, the steering engine can work by driving the rocker arm to swing up and down, so that the scheme has the characteristics of simplifying the structural design of the tail part of the model airplane, the assembly difficulty and the weight; in the scheme, the rocker arm and the jack are limited in shape, so that the rocker arm and the horizontal tail form a reliable tight fit connection relationship, and the stability of the model airplane in the flying process is facilitated; as mentioned above, in this scheme, the installation and the dismantlement of horizontal tail only need can accomplish through the cooperation relation of adjustment rocking arm and jack, so this scheme still has horizontal tail and tears, adorns the convenience, and horizontal tail connects reliable characteristics.

The further technical scheme is as follows:

as a can reduce the aerodynamic drag of model aeroplane and model ship, make things convenient for the technical scheme of steering wheel assembly simultaneously, set up to: the steering engine is arranged in the hollow space of the tail pipe, the hollow space of the tail pipe is in a step hole shape, and one end of the steering engine close to the machine body acts on the step surface of the step hole;

the tail of the tail pipe is further provided with an external thread, the tail pipe further comprises a barrel-shaped end cover, an internal thread is further arranged on the inner side face of the end cover, a through hole penetrating through two ends of the end cover is further formed in the bottom of the end cover, the through hole serves as a channel through which the rocker arm penetrates through the bottom, and the end cover is connected to the tail of the tail pipe through the internal thread on the end cover. In this scheme, through earlier in the middle part space of steering wheel embedding tail pipe afterbody, then through at tail pipe afterbody connection end cover, can be with the steering wheel centre gripping between the inboard of step face and end cover bottom.

As a person skilled in the art, a flight control module, a storage battery and the like of an existing model airplane are generally installed in a fuselage of the model airplane, and a control signal and power supply are generally transmitted through a wire, so that as a technical scheme capable of reducing aerodynamic drag of model airplane flight and reducing interference factors causing unstable model airplane flight, the flight control module, the storage battery and the like are arranged as follows: the steering engine power supply cable or the control signal communication cable is arranged on the tail pipe, and the tail pipe is arranged on the tail pipe and is connected with the tail pipe.

Also removable as a tail pipe to make things convenient for this model aeroplane and model ship to accomodate and constitute the part show, and constitute each convenient technical scheme of part connection of this model aeroplane and model ship, set up to: the front end of the tail pipe is in threaded connection with the machine body;

the length of a lead between the machine body and the steering engine is greater than that of the tail pipe;

still be provided with the aviation plug on the fuselage, the wire passes through the aviation plug and links to each other with power module or the control module of loading in the fuselage, and after the tail pipe and the fuselage accomplished to be connected, the aviation plug was located the tail pipe inside. This scheme of adoption, the one end that the wire links to each other with the steering wheel is the rear end, and the wire is used for bearing the one end that the part links to each other with the fuselage and be the front end, and when this model aeroplane and model ship installation, the accessible is realized as follows: the front end of the wire is firstly connected with an aviation plug, the tail part of the machine body is connected with a tail pipe through a connecting thread, the front end of the tail pipe can be provided with an external thread or an internal thread in a specific connection mode, the corresponding rear end of the machine body is provided with an internal thread matched with the external thread or an external thread matched with the internal thread, a steering engine is embedded into the tail part of the tail pipe, then the connection of an end cover is completed to restrict the position of the steering engine on the tail pipe, and then the installation of a flat tail is completed on a rocker arm. The disassembly is the reverse of the above installation process.

As a technical scheme that can optimize rocking arm and steering wheel atress, set up to: the middle part of the front end of the horizontal tail is also provided with a U-shaped groove, the front end orifice of the jack is positioned on the bottom of the U-shaped groove, strip-shaped sliding grooves are arranged on the groove walls on the two sides of the U-shaped groove, and the length direction of each sliding groove is along the groove depth direction of the U-shaped groove;

the left side and the right side of the steering engine are respectively provided with a pin shaft with an axis vertical to the axis of the tail pipe, the two pin shafts are coaxial, the two pin shafts are respectively embedded into a sliding groove in the process that the rocker arm is embedded into the jack, and each pin shaft can slide in the corresponding sliding groove when the rocker arm swings. According to the technical scheme, the pin shaft can transmit force between the steering engine and the horizontal tail, if the pin shaft is arranged on the casing of the steering engine, aiming at the technical scheme that the electromagnet drives the rocker arm to swing, when the aeromodelling flies, the stress of the rocker arm and the steering engine is optimized through shearing the pin shaft.

For the manufacturing of the part of this model aeroplane and model ship of convenient constitution with make horizontal tail part removable after spout cooperation precision descends, set up to: still including the U-shaped piece that is the U-shaped, the U-shaped groove is the U-shaped space that the U-shaped piece encloses, the spout all sets up on the U-shaped piece, and jack front end hole section is located the U-shaped piece.

As a technical scheme for easily completing the disassembly and assembly of a U-shaped block, the method is characterized in that: the U-shaped block is connected to the horizontal tail through an inner hexagon bolt.

As a light technical scheme of the whole weight of model airplane, the device is arranged as follows: the horizontal tail and the machine body are both hollow mechanisms comprising inner frameworks and skins. Namely, the horizontal tail and the fuselage are both composed of an inner skeleton and a skin. Preferably, the connection relation between the skin and the inner framework on any one of the horizontal tail and the fuselage is detachable, so that the influence of the appearance and the size of the aeromodelling on the flight resistance and the attitude can be displayed by replacing the skins in different forms.

The utility model discloses following beneficial effect has:

Drawings

Fig. 1 is a schematic perspective view of a specific embodiment of a fixed-wing model airplane according to the present invention;

fig. 2 is a partial cross-sectional view of a tail pipe of a fixed wing model airplane according to an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a shown in fig. 1.

The labels in the figure are respectively: 1. the aircraft comprises an aircraft body, 2 parts of a horizontal flying propeller, 3 parts of a tail pipe, 4 parts of a horizontal tail, 5 parts of a steering engine, 6 parts of a rocker arm, 7 parts of a jack, 8 parts of a fastening bolt, 9 parts of a pin shaft, 10 parts of a sliding groove, 11 parts of a U-shaped block, 12 parts of a lead wire, 13 parts of an end cover.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:

example 1:

as shown in fig. 1 to 3, a fixed wing model airplane comprises a fuselage 1, a tail pipe 3 connected to the tail of the fuselage 1, a horizontal tail 4 installed at the rear end of the tail pipe 3, a horizontal flying propeller 2 installed on the fuselage 1 or the tail pipe 3, and a steering engine 5 installed at the tail of the tail pipe 3, wherein the steering engine 5 is connected with the horizontal tail 4 through a rocker arm 6, the rocker arm 6 is cylindrical, a jack 7 is further arranged on the horizontal tail 4, the rocker arm 6 is of a conical structure with the rear end diameter smaller than the front end diameter, the jack 7 is a conical hole with the front end diameter larger than the tail end diameter, and in the process that the rocker arm 6 is inserted into the jack 7, the rocker arm 6 and the jack 7 can form an interference connection relationship;

the fastening bolt 8 is in threaded connection with the horizontal tail 4, and a threaded hole for connecting the fastening bolt 8 is communicated with the jack 7; under the interference connection relation, in the process that the fastening bolt 8 penetrates into the threaded hole, the fastening bolt 8 applies pressure to the side face of the rocker arm 6 through the end part of the fastening bolt, and the rocker arm 6 and the horizontal tail 4 are fixed.

In the scheme, the steering engine 5 is used for driving the rocker arm 6 to swing up and down, and the rocker arm 6 swings up and down to drive the horizontal tail 4 to swing up and down, so that the posture of the horizontal tail 4 is adjusted, and the aim of controlling the flight posture of the model airplane is fulfilled. In this embodiment, the specific implementation form of the steering engine 5 preferably adopts an electromagnet form, so that the rocker arm 6 obtains corresponding actions on the premise of the simplest structure: the rocker arm 6 swings up and down under the electromagnetic force through the electromagnet power supply control so that the horizontal tail 4 obtains the required posture. If steering wheel 5 includes the casing and installs two electromagnet coils in the casing, one of them electromagnet coil installs the upper end at the casing, another electromagnet coil installs the lower extreme at the casing, rocking arm 6 is continuous with the rear end of casing through the pivot, and two electromagnet coils all are located the front end of rocking arm 6, the front end of rocking arm 6 extends to fuselage 1 side so that arbitrary electromagnet coil can adsorb the front end of rocking arm 6, the rear end of rocking arm 6 is as being used for the link of being connected with horizontal tail 4, rocking arm 6 is required rocking arm 6 upper and lower pendulum when revolving around the pivot under the effect of electromagnet coil, when reversing. The limit is that the rocker arm 6 and the jack 7 can form an interference connection relation and aims at limiting the relative size of the rocker arm 6 and the jack 7, namely, the rocker arm 6 and the horizontal tail 4 can form a close fit connection relation in the process that the rear end of the rocker arm 6 is inserted into the jack 7 from the front end of the jack 7, and after the close fit connection relation is formed, the rocker arm 6 and the horizontal tail 4 are locked through the fastening bolt 8, so that the steering engine 5 and the horizontal tail 4 can be reliably connected.

By adopting the scheme, the steering engine 5 can drive the rocker arm 6 to swing up and down, so that the scheme has the characteristics of simplifying the structural design of the tail part of the model airplane, the assembly difficulty and the weight; in the scheme, the rocker arm 6 and the jack 7 are limited in shape, so that the rocker arm 6 and the horizontal tail 4 form a reliable tight fit connection relationship, and the stability of the model airplane in the flying process is facilitated; as mentioned above, in this scheme, the installation and the dismantlement of horizontal tail 4 only need can be accomplished through the cooperation relation of adjustment rocking arm 6 and jack 7, so this scheme still has horizontal tail 4 and tears, adorns the convenience open, the reliable characteristics are connected to horizontal tail 4.

Example 2:

the embodiment is further limited on the basis of embodiment 1, as shown in fig. 1 to 3, as a technical scheme capable of reducing aerodynamic resistance of the model airplane and facilitating assembly of the steering engine 5, the technical scheme is as follows: the steering engine 5 is arranged in the hollow space of the tail pipe 3, the hollow space of the tail pipe 3 is in a step hole shape, and one end, close to the machine body 1, of the steering engine 5 acts on the step surface of the step hole;

the tail of tail pipe 3 still is provided with the external screw thread, still includes and is tubbiness end cover 13, still be provided with the internal thread on the terminal cover 13 medial surface, still be provided with the through-hole that link up its both ends on the bottom of end cover 13, the through-hole passes as rocking arm 6 the passageway of bottom, end cover 13 is through the internal thread connection on it at the tail of tail pipe 3. In this scheme, through earlier in steering wheel 5 imbeds the middle part space of 3 afterbody of tail pipe, then through at 3 afterbody connection end cover 13 of tail pipe, can be with steering wheel 5 centre gripping between the inboard of step face and end cover 13 bottom.

As a person skilled in the art, a flight control module, a storage battery and the like of an existing model airplane are generally installed in a fuselage 1 of the model airplane, and a control signal and power supply are generally transmitted through a wire 12, so as to serve as a technical scheme capable of reducing aerodynamic drag of model airplane flight and reducing interference factors causing unstable model airplane flight, and the technical scheme is characterized in that: the steering engine control device further comprises a lead 12 serving as a power supply cable or a control signal communication cable of the steering engine 5, wherein the lead 12 extends from the interior of the tail pipe 3 to the side of the body 1.

As a tail pipe 3 also removable to make things convenient for this model aeroplane and model ship to accomodate and constitute the part show, and constitute each convenient technical scheme of part connection of this model aeroplane and model ship, set up to: the front end of the tail pipe 3 is in threaded connection with the machine body 1;

the length of a lead 12 between the machine body 1 and the steering engine 5 is greater than that of the tail pipe 3;

still be provided with the aviation plug on the fuselage 1, wire 12 passes through the aviation plug and links to each other with the power module or the control module who load in fuselage 1, and tail pipe 3 and fuselage 1 accomplish and be connected the back, the aviation plug is located inside tail pipe 3. This scheme of adoption, the one end that wire 12 and steering wheel 5 link to each other is the rear end, and wire 12 is used for bearing the one end that the part links to each other with fuselage 1 and is the front end, and when this model aeroplane and model ship installation, the accessible is realized as follows: the front end of a lead 12 is connected with an aviation plug firstly, then the tail part of a machine body 1 is connected with a tail pipe 3 through a connecting thread, the front end of the tail pipe 3 can be provided with an external thread or an internal thread in a specific connection mode of the tail pipe 3, the corresponding rear end of the machine body 1 is the internal thread matched with the external thread or the external thread matched with the internal thread, then a steering engine 5 is embedded into the tail part of the tail pipe 3, then the connection of an end cover 13 is completed to restrict the position of the steering engine 5 on the tail pipe 3, and then the installation of a horizontal tail 4 is completed on a rocker. The disassembly is the reverse of the above installation process.

As a technical scheme that the force of the rocker arm 6 and the steering engine 5 can be optimized, the technical scheme is as follows: a U-shaped groove is further formed in the middle of the front end of the horizontal tail 4, a front end hole of the jack 7 is located on the bottom of the U-shaped groove, strip-shaped sliding grooves 10 are formed in groove walls on two sides of the U-shaped groove, and the length direction of each sliding groove 10 is along the groove depth direction of the U-shaped groove;

the left side and the right side of the steering engine 5 are respectively provided with a pin shaft 9 with the axis vertical to the axis of the tail pipe 3, the two pin shafts 9 are coaxial, the two pin shafts 9 are respectively embedded into a sliding groove 10 in the process that the rocker arm 6 is embedded into the jack 7, and each pin shaft 9 can slide in the corresponding sliding groove 10 when the rocker arm 6 swings. According to the scheme, the pin shaft 9 can transmit force between the steering engine 5 and the horizontal tail 4, if the pin shaft 9 is arranged on the shell of the steering engine 5, aiming at the technical scheme that the electromagnet drives the rocker arm 6 to swing, when the aeromodelling flies, the stress of the rocker arm 6 and the steering engine 5 can be optimized through shearing the pin shaft 9.

In order to facilitate the manufacture of the parts forming the model airplane and to ensure that the horizontal tail 4 can be locally replaced after the matching precision of the sliding chute 10 is reduced, the following arrangement is adopted: still including the U-shaped piece 11 that is the U-shaped, the U-shaped groove is the U-shaped space that U-shaped piece 11 encloses, spout 10 all sets up on U-shaped piece 11, and jack 7 front end hole section is located U-shaped piece 11.

As a technical scheme for easily completing the disassembly and assembly of the U-shaped block 11, the technical scheme is as follows: the U-shaped block 11 is connected to the horizontal tail 4 through an inner hexagon bolt.

As a light technical scheme of the whole weight of model airplane, the device is arranged as follows: the horizontal tail 4 and the machine body 1 are both hollow mechanisms comprising inner frameworks and skins. Namely, the horizontal tail 4 and the fuselage 1 are both composed of an inner framework and a skin. Preferably, the connection relationship between the skin and the inner framework on any one of the horizontal tail 4 and the fuselage 1 is detachable, so that the influence of the appearance and the size of the aeromodelling on the flight resistance and the attitude can be displayed by replacing the skins in different shapes.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims

1. A fixed wing model airplane comprises a fuselage (1), a tail pipe (3) connected to the tail of the fuselage (1), a horizontal tail (4) installed at the rear end of the tail pipe (3), a horizontal flying propeller (2) installed on the fuselage (1) or on the tail pipe (3), and a steering engine (5) installed at the tail of the tail pipe (3), wherein the steering engine (5) is connected with the horizontal tail (4) through a rocker arm (6), the fixed wing model airplane is characterized in that the rocker arm (6) is cylindrical, a jack (7) is further arranged on the horizontal tail (4), the rocker arm (6) is of a conical structure with the rear end diameter smaller than that of the front end, the jack (7) is a conical hole with the front end diameter larger than that of the tail end, and in the process that the rocker arm (6) is inserted into the jack (7), the rocker arm (6) and the jack (7) can form an interference connection relation;

the fastening bolt (8) is in threaded connection with the horizontal tail (4), and a threaded hole for connecting the fastening bolt (8) is communicated with the jack (7); under the interference connection relation, in the process that the fastening bolt (8) penetrates into the threaded hole, the fastening bolt (8) applies pressure to the side face of the rocker arm (6) through the end part of the fastening bolt, and the rocker arm (6) and the horizontal tail (4) are fixed.

2. The fixed wing model airplane as claimed in claim 1, wherein the steering engine (5) is installed in the hollow space of the tail pipe (3), the hollow space of the tail pipe (3) is in a step hole shape, and one end of the steering engine (5) close to the airplane body (1) acts on the step surface of the step hole;

the tail of tail pipe (3) still is provided with the external screw thread, still including being tubbiness end cover (13), still be provided with the internal thread on end cover (13) medial surface, still be provided with the through-hole that link up its both ends on the bottom of end cover (13), the through-hole passes as rocking arm (6) the passageway of bottom, internal thread connection in the tail of tail pipe (3) on end cover (13) through it.

3. A fixed wing model airplane according to claim 2, further comprising a wire (12) as a power supply cable or a control signal communication cable for the steering engine (5), wherein the wire (12) extends from the interior of the tail pipe (3) to the side of the airplane body (1).

4. A fixed wing model airplane according to claim 3, wherein the front end of the tail pipe (3) is screwed with the airplane body (1);

the length of a lead (12) between the machine body (1) and the steering engine (5) is greater than that of the tail pipe (3);

still be provided with the aviation plug on fuselage (1), wire (12) link to each other with power module or the control module who loads in fuselage (1) through the aviation plug, and tail pipe (3) and fuselage (1) accomplish and be connected the back, the aviation plug is located inside tail pipe (3).

5. The fixed-wing model airplane according to claim 1, wherein a U-shaped groove is further formed in the middle of the front end of the horizontal tail (4), the front end opening of the jack (7) is located on the bottom of the U-shaped groove, strip-shaped sliding grooves (10) are formed in the groove walls on two sides of the U-shaped groove, and the length direction of each sliding groove (10) is along the depth direction of the U-shaped groove;

the left side and the right side of the steering engine (5) are respectively provided with a pin shaft (9) with the axis vertical to the axis of the tail pipe (3), the two pin shafts (9) are coaxial, the two pin shafts (9) are respectively embedded into a sliding groove (10) in the process that the rocker arm (6) is embedded into the jack (7), and when the rocker arm (6) swings, each pin shaft (9) can slide in the corresponding sliding groove (10).

6. A fixed-wing model airplane according to claim 5, further comprising a U-shaped block (11), wherein the U-shaped groove is a U-shaped space surrounded by the U-shaped block (11), the sliding chutes (10) are all arranged on the U-shaped block (11), and the front end hole sections of the insertion holes (7) are positioned on the U-shaped block (11).

7. A fixed-wing model airplane according to any one of claims 1 to 6, wherein the horizontal tail (4) and the fuselage (1) are hollow structures comprising an inner frame and a skin.