A deformable heat exchange pipeline for an aircraft variable nose cone

Abstract

The present invention provides a deformable heat exchange pipeline for a variable nose cone of an aircraft, comprising a main contraction heat exchange pipeline and a main extension heat exchange pipeline fixedly installed on the surface of the variable nose cone; both the main contraction heat exchange pipeline and the main extension heat exchange pipeline include a non-deformable unit, a telescopic deformation unit and a bending deformation unit, and each unit is connected by a plug-in transition pipe with a bending angle, and its deformation follows the follow-up deformation of the variable nose cone; the non-deformable unit is a pipeline with a hexagonal cross-section; the telescopic deformation unit is composed of a multi-stage sleeve structure; the bending deformation unit adopts a flexible Yoshimura origami structure; the bending deformation unit of the main contraction heat exchange pipeline is in the extended limit state; the bending deformation unit of the main extension heat exchange pipeline is in the contracted limit state. The present invention actively reduces heat by arranging a heat exchange pipeline on the surface of the aircraft, and uses the waste heat on the surface of the aircraft to preheat the fuel working medium, realizing the reuse of heat energy while protecting the safety of the internal equipment of the aircraft.

Description

Technical Field

[0001] The present invention belongs to the fields of aerospace vehicles and heat exchangers, and particularly relates to a deformable heat exchange pipeline for a variable nose cone of an aircraft. Background Art

[0002] An aerospace vehicle is a reusable space-to-ground transportation vehicle. The traditional aerospace vehicle has a fixed shape and cannot meet the requirements of complex operating environments. In order to improve the environmental adaptability, a variable aircraft that can autonomously change the fuselage shape has been derived, and it has different optimal aerodynamic shapes under different flight conditions. However, when the aircraft cruises in the near space, affected by shock waves and viscosity, it will suffer severe aerodynamic heating. With the help of the thermal protection structure of the aircraft, the temperature can be greatly reduced, but the existing cooling technology wastes the thermal energy of the waste heat. Summary of the Invention

[0003] The purpose of the present invention is to provide a deformable heat exchange pipeline for a variable nose cone of an aircraft. By arranging a heat exchange pipeline on the surface of the aircraft to actively reduce the heat, the waste heat on the surface of the aircraft is used to preheat the fuel working medium, realizing the reuse of thermal energy while protecting the safety of the internal equipment of the aircraft. Based on the application scenario of the variable nose cone, a deformable heat exchange pipeline is proposed, which can achieve axial multi-stage telescopic deformation and radial bending deformation. At the same time, through bionic design, a heat exchange pipeline unit imitating a honeycomb structure is proposed to improve the ability of the heat exchange pipeline to withstand the aerodynamic load of the aircraft.

[0004] The present invention provides a deformable heat exchange pipeline for a variable nose cone of an aircraft, including a main contraction heat exchange pipeline and a main extension heat exchange pipeline fixedly installed on the surface of the variable nose cone; both the main contraction heat exchange pipeline and the main extension heat exchange pipeline include a non-deformable unit, a telescopic deformation unit, and a bending deformation unit. Each unit is connected by a plug-and-play transition pipe with a bending angle, and its deformation follows the follow-up deformation of the variable nose cone.

[0005] The non-deformable unit is a pipeline with a hexagonal cross-section for pipeline load-bearing; the telescopic deformation unit is composed of a multi-stage sleeve structure; the bending deformation unit adopts a flexible Yoshimura origami structure and is provided with Yoshimura heat pipes, which are used to realize the bending deformation of the heat exchange pipeline by relying on the coupled movement of the Yoshimura heat pipes; the bending deformation unit of the main contraction heat exchange pipeline is in the extended limit state; the bending deformation unit of the main extension heat exchange pipeline is in the contracted limit state.

[0006] Further, the variable nose cone is composed of a first nose cone housing, a second nose cone housing, a third nose cone housing, a fourth nose cone housing, and a fifth nose cone housing that are sequentially connected; wherein, the deformation at the junction of the first nose cone housing and the second nose cone housing, and at the junction of the third nose cone housing and the fourth nose cone housing is the telescopic deformation of the nose cone; the deformation at the junction of the second nose cone housing and the third nose cone housing, and at the junction of the fourth nose cone housing and the fifth nose cone housing is the bending deformation of the nose cone; the surface of the variable nose cone is symmetric about the neutral plane with a zero deformation telescopic amount, and five main contraction heat exchange pipelines and five main extension heat exchange pipelines are symmetrically distributed on both sides.

[0007] Further, grooves, cutouts, and connection through holes are provided on the surfaces of the first nose cone housing, the second nose cone housing, the third nose cone housing, the fourth nose cone housing, and the fifth nose cone housing for installing the main contraction heat exchange pipelines and the main extension heat exchange pipelines.

[0008] Further, the main contraction heat exchange pipeline includes a first non-deformable unit, a first transition short pipe, a first rigid transition unit, a first main contraction bending deformation unit, a first connector, a first transition long pipe, a second non-deformable unit, a second transition short pipe, a first telescopic deformation unit, a third transition short pipe, a third non-deformable unit, a second transition long pipe, a second rigid transition unit, a second main contraction bending deformation unit, a second connector, a third transition long pipe, a fourth non-deformable unit, a fourth transition short pipe, a second telescopic deformation unit, a fifth transition short pipe, and a fifth non-deformable unit that are sequentially connected.

[0009] Further, the first telescopic deformation unit and the second telescopic deformation unit include a first-level sleeve, a second-level sleeve, and a third-level sleeve. The first-level sleeve, the second-level sleeve, and the third-level sleeve are nested and connected in stages. The second-level sleeve is sleeved inside the first-level sleeve, and the third-level sleeve is sleeved inside the second-level sleeve; a first sealing ring is installed in the groove at the end of the second-level sleeve, and a second sealing ring is installed in the groove at the end of the third-level sleeve; the first telescopic deformation unit and the second telescopic deformation unit are connected to the external pipeline through the first end cover and the second end cover at both ends.

[0010] Further, both ends of the Yoshimura heat pipe are hermetically connected to the second connector and the second rigid transition unit through a ferrule structure composed of a first compression nut, a second compression nut, a first joint body, a second joint body, a first snap ring, a second snap ring, a first locking nut, and a second locking nut.

[0011] Further, the main extension heat exchange pipeline includes a first connection support, a sixth non-deformable unit, a first main extension bending deformation unit, a second connection support, a seventh non-deformable unit, and a second main extension bending deformation unit that are sequentially connected; the main extension heat exchange pipeline is fixed to the variable nose cone through the first connection support and the second connection support.

[0012] Furthermore, the Yoshimura heat pipes of the first main contraction and bending deformation unit and the second main contraction and bending deformation unit are in the stretched limit state; the Yoshimura heat pipes of the first main stretching and bending deformation unit and the second main stretching and bending deformation unit are in the contracted limit state.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention includes a telescopic deformation unit for the heat exchange pipeline. The multi-stage sleeve structure telescopically expands and contracts step by step, and sealing rings are placed at the ends of each stage of the sleeve, enabling axial telescopic deformation of the heat exchange pipeline.

[0015] 2. The present invention includes a bending deformation unit for the heat exchange pipeline. A flexible Yoshimura origami structure is adopted, and both ends are hermetically connected to the rigid transition unit through ferrule straight-through joints, having two deformation modes of bending and telescoping, and enabling bending deformation of the heat exchange pipeline.

[0016] 3. The present invention includes a non-deformation unit for the heat exchange pipeline, and a honeycomb structure imitation heat exchange pipeline unit is proposed, which can improve the load-bearing performance of the pipeline.

[0017] 4. With a reasonable layout and simple deformation modes, the present invention realizes the multi-deformation combination of the heat exchange pipeline and the integrated design of deformation - load-bearing, which is beneficial to the reasonable utilization of the aerodynamic waste heat of the aircraft. Brief Description of the Drawings

[0018] Figure 1 It is a distribution schematic diagram of the deformable heat exchange pipeline for the variable head cone of the aircraft on the head cone surface;

[0019] Figure 2 It is a schematic diagram of the assembly relationship between the deformable heat exchange pipeline for the variable head cone of the aircraft and the head cone;

[0020] Figure 3 It is a schematic diagram of the structure of the deformable heat exchange pipeline for the variable head cone of the aircraft;

[0021] Figure 4 It is a schematic diagram of the telescopic deformation unit structure of the deformable heat exchange pipeline for the variable head cone of the aircraft;

[0022] Figure 5 It is a schematic diagram of the bending deformation unit structure of the deformable heat exchange pipeline for the variable head cone of the aircraft.

[0023] Reference numerals in the figures:

[0024] 1 - First nose cone housing; 2 - Second nose cone housing; 3 - Third nose cone housing; 4 - Fourth nose cone housing; 5 - Fifth nose cone housing; 6 - Main contraction heat exchange pipeline; 7 - Main extension heat exchange pipeline;

[0025] 51 - First transition short pipe; 41 - Second transition short pipe; 31 - Third transition short pipe; 21 - Fourth transition short pipe; 11 - Fifth transition short pipe;

[0026] 42 - First transition long pipe; 32 - Second transition long pipe; 22 - Third transition long pipe;

[0027] 43 - First connecting piece; 23 - Second connecting piece;

[0028] 53 - First rigid transition unit; 33 - Second rigid transition unit;

[0029] 54 - First connection support; 34 - Second connection support;

[0030] 61 - First non - deformable unit; 62 - Second non - deformable unit; 63 - Third non - deformable unit; 64 - Fourth non - deformable unit; 65 - Fifth non - deformable unit; 71 - Sixth non - deformable unit; 72 - Seventh non - deformable unit;

[0031] 68 - First telescopic deformation unit; 66 - Second telescopic deformation unit;

[0032] 661 - First - stage sleeve; 662 - Second - stage sleeve; 663 - Third - stage sleeve;

[0033] 664 - First end cover; 665 - Second end cover;

[0034] 6621 - First sealing ring; 6631 - Second sealing ring;

[0035] 69 - First main contraction bending deformation unit; 67 - Second main contraction bending deformation unit;

[0036] 671 - First compression nut; 672 - Second compression nut;

[0037] 673 - First joint body; 674 - Second joint body;

[0038] 675 - First snap ring; 676 - Second snap ring;

[0039] 677 - First lock nut; 678 - Second lock nut;

[0040] 679 - Yoshimura heat pipe;

[0041] 79 - First main extension bending deformation unit; 77 - Second main extension bending deformation unit. Detailed implementation mode

[0042] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings. It should be noted that these embodiments are not limitations on the present invention, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments falls within the protection scope of the present invention.

[0043] Refer Figures 1 to 5 As shown, this embodiment provides a deformable heat exchange pipeline for a variable head cone of an aircraft, including a main contraction heat exchange pipeline 6 and a main extension heat exchange pipeline 7 fixedly installed on the surface of the variable head cone; both the main contraction heat exchange pipeline 6 and the main extension heat exchange pipeline 7 include a non-deformable unit, a telescopic deformation unit, and a bending deformation unit. Each unit is connected by a plug-in transition pipe with a bending angle, and its deformation follows the follow-up deformation of the variable head cone; the non-deformable unit is a pipeline with a hexagonal cross-section for pipeline load-bearing, and the imitation honeycomb structure improves the performance of the heat exchange pipeline in withstanding the aerodynamic load of the aircraft; the telescopic deformation unit is composed of a multi-stage sleeve structure, and a sealing ring is placed at the end of each stage to ensure the airtightness of the pipeline. A single unit can achieve a maximum axial telescopic deformation of 40 mm; the bending deformation unit adopts a flexible Yoshimura origami structure, and is provided with a Yoshimura heat pipe 679. Relying on the coupled movement of the Yoshimura heat pipe 679, the bending deformation of the heat exchange pipeline is realized. Both ends of the bending deformation unit are hermetically connected to the non-deformable unit through a ferrule structure, and have two deformation modes of bending and telescoping. The telescopic rate is about 50%, and the bending amount can reach the design requirement of the variable head cone bending by 15°. Among all pipeline units, the Yoshimura heat pipe 679 is a flexible pipeline, and the rest of the pipeline structures are rigid pipelines. The heat exchange pipeline is fixed on the surface of the head cone, and the deformation of each unit follows the deformation of the variable head cone. There is no need to install a drive by itself, and the telescopic and bending deformation processes are independent of each other and carried out independently, realizing an integrated design of deformation and load-bearing, which is beneficial to the rational utilization of the aerodynamic waste heat of the aircraft.

[0044] Refer Figure 1As shown in the figure, the variable head cone is composed of a first head cone outer shell 1, a second head cone outer shell 2, a third head cone outer shell 3, a fourth head cone outer shell 4, and a fifth head cone outer shell 5 that are connected in sequence. Among them, the deformation at the junction of the first head cone outer shell 1 and the second head cone outer shell 2, and at the junction of the third head cone outer shell 3 and the fourth head cone outer shell 4 is the telescopic deformation of the head cone; the deformation at the junction of the second head cone outer shell 2 and the third head cone outer shell 3, and at the junction of the fourth head cone outer shell 4 and the fifth head cone outer shell 5 is the bending deformation of the head cone. The bending deformation mode of the variable head cone is similar to a spherical hinge structure, with a neutral plane where the bending deformation telescopic amount is 0. On both sides of the neutral plane, the deformation trends are different during bending deformation, with one side tending to stretch and the other side tending to contract. Considering the above situation, a total of 10 heat exchange pipelines are arranged on the surface of the variable head cone. With the neutral plane where the deformation telescopic amount is zero as the symmetry plane, five main contraction heat exchange pipelines 6 and five main extension heat exchange pipelines 7 are symmetrically distributed on both sides. When the variable head cone undergoes bending deformation, the bending deformation units of the heat exchange pipelines on both sides of the neutral plane have different deformation results, with one side bending accompanied by stretching and the other side bending accompanied by contraction. Therefore, the bending deformation unit of the main contraction heat exchange pipeline 6 is in the stretching limit state; the bending deformation unit of the main extension heat exchange pipeline 7 is in the contraction limit state. The installation, fixation, and working methods of the two types of heat exchange pipelines are similar. This article mainly describes the main contraction heat exchange pipeline 6 in detail and briefly describes the differences of the main extension heat exchange pipeline 7.

[0045] In this embodiment, grooves, cutouts, and connection through holes are provided on the surfaces of the first head cone outer shell 1, the second head cone outer shell 2, the third head cone outer shell 3, the fourth head cone outer shell 4, and the fifth head cone outer shell 5 for the installation of the main contraction heat exchange pipeline 6 and the main extension heat exchange pipeline 7, and the fixation method uses bolt fastening. The variable head cone drives the deformation units of the heat exchange pipelines to move to complete telescopic and bending deformations.

[0046] Refer Figure 2 As shown in the figure, the main contraction heat exchange pipeline 6 includes a first non-deformable unit 61, a first transition short pipe 51, a first rigid transition unit 53, a first main contraction bending deformation unit 69, a first connecting piece 43, a first transition long pipe 42, a second non-deformable unit 62, a second transition short pipe 41, a first telescopic deformation unit 68, a third transition short pipe 31, a third non-deformable unit 63, a second transition long pipe 32, a second rigid transition unit 33, a second main contraction bending deformation unit 67, a second connecting piece 23, a third transition long pipe 22, a fourth non-deformable unit 64, a fourth transition short pipe 21, a second telescopic deformation unit 66, a fifth transition short pipe 11, and a fifth non-deformable unit 65 that are connected in sequence.

[0047] Refer Figure 4As shown, the first telescopic deformation unit 68 and the second telescopic deformation unit 66 include a first-level sleeve 661, a second-level sleeve 662, and a third-level sleeve 663. The first-level sleeve 661, the second-level sleeve 662, and the third-level sleeve 663 are nested and connected in stages. The second-level sleeve 662 is sleeved inside the first-level sleeve 661, and the third-level sleeve 663 is sleeved inside the second-level sleeve 662. A first sealing ring 6621 is installed in the end groove of the second-level sleeve 662, and a second sealing ring 6631 is installed in the end groove of the third-level sleeve 663. The first telescopic deformation unit 68 and the second telescopic deformation unit 66 are connected to the external pipeline through the first end cover 664 and the second end cover 665 at both ends. When stretching and deforming, the third-level sleeve 663 stretches first. When the third-level sleeve 663 reaches the farthest stroke, it drives the second-level sleeve 662 to move. Then, until the second-level sleeve 662 reaches the farthest stroke, the movement continues until the stretching limit is locked, completing the axial stretching deformation of the heat exchange pipeline.

[0048] Refer Figure 5 As shown, both ends of the Yoshimura heat pipe 679 are hermetically connected to the second connecting member 23 and the second rigid transition unit 33 through a ferrule structure composed of a first compression nut 671, a second compression nut 672, a first joint body 673, a second joint body 674, a first snap ring 675, a second snap ring 676, a first locking nut 677, and a second locking nut 678. When the bending deformation unit deforms, the Yoshimura heat pipe bends with the head cone and is accompanied by stretching / contracting.

[0049] Refer Figure 3 As shown, there are structural differences between the first main contraction and bending deformation unit 69, the second main contraction and bending deformation unit 67, the first main stretching and bending deformation unit 79, and the second main stretching and bending deformation unit 77, which are reflected in the arrangement state of the Yoshimura heat pipe 679, the arrangement position of the connecting support, and the number of non-deforming units.

[0050] The arrangement states of the Yoshimura heat pipes are different: the Yoshimura heat pipes of the first main contraction and bending deformation unit 69 and the second main contraction and bending deformation unit 67 are in the stretching limit state; the Yoshimura heat pipes of the first main stretching and bending deformation unit 79 and the second main stretching and bending deformation unit 77 are in the contraction limit state.

[0051] The arrangement positions of the connecting supports are different: the main stretching heat exchange pipeline 7 includes a first connecting support 54, a sixth non-deforming unit 71, a first main stretching and bending deformation unit 79, a second connecting support 34, a seventh non-deforming unit 72, and a second main stretching and bending deformation unit 77 connected in sequence; the main stretching heat exchange pipeline 7 is fixed to the variant head cone through the first connecting support 54 and the second connecting support 34. The main contraction heat exchange pipeline 6 is fixed to the variant head cone by relying on the rigid transition unit.

[0052] The number of non-deformable units is different: The main expansion heat exchange pipeline 7 has more the sixth non-deformable unit 71 and the seventh non-deformable unit 72 than the main contraction heat exchange pipeline 6.

[0053] The deformable heat exchange pipeline has the following technical effects:

[0054] 1. The present invention includes telescopic deformation units of the heat exchange pipeline. The multi-stage sleeve structure expands and contracts step by step, and sealing rings are placed at the ends of each stage of the sleeve, enabling axial telescopic deformation of the heat exchange pipeline.

[0055] 2. The present invention includes bending deformation units of the heat exchange pipeline. The flexible Yoshimura origami structure is adopted, and the two ends are hermetically connected to the rigid transition unit through ferrule straight-throughs, having two deformation modes of bending and telescoping, enabling bending deformation of the heat exchange pipeline.

[0056] 3. The present invention includes non-deformable units of the heat exchange pipeline. A honeycomb structure imitation heat exchange pipeline unit is proposed, which can improve the load-bearing performance of the pipeline.

[0057] 4. With a reasonable layout and simple deformation modes, the present invention realizes the multi-deformation combination and the integrated design of deformation-bearing of the heat exchange pipeline, which is beneficial to the reasonable utilization of the aerodynamic waste heat of the aircraft.

[0058] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A deformable heat exchange pipeline for an aircraft variant nose cone, characterized in that, It includes a main contraction heat exchange pipeline (6) and a main extension heat exchange pipeline (7) fixedly installed on the surface of the variable nose cone; both the main contraction heat exchange pipeline (6) and the main extension heat exchange pipeline (7) include a non-deformable unit, a telescopic deformation unit, and a bending deformation unit. Each unit is connected by a plug-in transition pipe with a bending angle, and its deformation follows the follow-up deformation of the variable nose cone. The non-deformable unit is a pipeline with a hexagonal cross-section for pipeline load-bearing; the telescopic deformation unit is composed of a multi-stage sleeve structure; the bending deformation unit adopts a flexible Yoshimura origami structure and is provided with a Yoshimura heat pipe (679) to realize the bending deformation of the heat exchange pipeline by relying on the coupled movement of the Yoshimura heat pipe (679); the bending deformation unit of the main contraction heat exchange pipeline (6) is in the extended limit state; the bending deformation unit of the main extension heat exchange pipeline (7) is in the contracted limit state.

2. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 1, characterized in that The variable nose cone is composed of a first nose cone outer shell (1), a second nose cone outer shell (2), a third nose cone outer shell (3), a fourth nose cone outer shell (4), and a fifth nose cone outer shell (5) connected in sequence; among them, the deformation at the junction of the first nose cone outer shell (1) and the second nose cone outer shell (2), and at the junction of the third nose cone outer shell (3) and the fourth nose cone outer shell (4) is the telescopic deformation of the nose cone; the deformation at the junction of the second nose cone outer shell (2) and the third nose cone outer shell (3), and at the junction of the fourth nose cone outer shell (4) and the fifth nose cone outer shell (5) is the bending deformation of the nose cone; the surface of the variable nose cone is symmetric with respect to the neutral plane with a zero deformation telescopic amount as the symmetry plane, and five main contraction heat exchange pipelines (6) and five main extension heat exchange pipelines (7) are symmetrically distributed on both sides.

3. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 2, characterized in that, The surfaces of the first nose cone outer shell (1), the second nose cone outer shell (2), the third nose cone outer shell (3), the fourth nose cone outer shell (4), and the fifth nose cone outer shell (5) are provided with grooves, cutouts, and connection through holes for the installation of the main contraction heat exchange pipeline (6) and the main extension heat exchange pipeline (7).

4. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 3, characterized in that, The main contraction heat exchange pipeline (6) includes a first non-deformable unit (61), a first transition short pipe (51), a first rigid transition unit (53), a first main contraction bending deformation unit (69), a first connector (43), a first transition long pipe (42), a second non-deformable unit (62), a second transition short pipe (41), a first telescopic deformation unit (68), a third transition short pipe (31), a third non-deformable unit (63), a second transition long pipe (32), a second rigid transition unit (33), a second main contraction bending deformation unit (67), a second connector (23), a third transition long pipe (22), a fourth non-deformable unit (64), a fourth transition short pipe (21), a second telescopic deformation unit (66), a fifth transition short pipe (11), and a fifth non-deformable unit (65) connected in sequence.

5. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 4, characterized in that, The first telescopic deformation unit (68) and the second telescopic deformation unit (66) include a first-stage sleeve (661), a second-stage sleeve (662), and a third-stage sleeve (663). The first-stage sleeve (661), the second-stage sleeve (662), and the third-stage sleeve (663) are nested and connected in stages. The second-stage sleeve (662) is sleeved inside the first-stage sleeve (661), and the third-stage sleeve (663) is sleeved inside the second-stage sleeve (662). A first sealing ring (6621) is installed in the end groove of the second-stage sleeve (662), and a second sealing ring (6631) is installed in the end groove of the third-stage sleeve (663). The first telescopic deformation unit (68) and the second telescopic deformation unit (66) are connected to the external pipeline through the first end cover (664) and the second end cover (665) at both ends.

6. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 5, characterized in that, Both ends of the Yoshimura heat pipe (679) of the second main contraction and bending deformation unit (67) are hermetically connected to the second connecting member (23) and the second rigid transition unit (33) through a ferrule structure composed of a first compression nut (671), a second compression nut (672), a first joint body (673), a second joint body (674), a first snap ring (675), a second snap ring (676), a first lock nut (677), and a second lock nut (678).

7. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 6, characterized in that, The main extended heat exchange pipeline (7) includes a first connecting support (54), a sixth non-deformable unit (71), a first main extended bending deformation unit (79), a second connecting support (34), a seventh non-deformable unit (72), and a second main extended bending deformation unit (77) connected in sequence. The main extended heat exchange pipeline (7) is fixed to the variant nose cone through the first connecting support (54) and the second connecting support (34).

8. The deformable heat exchange pipeline for the variable nose cone of an aircraft according to claim 7, characterized in that, The Yoshimura heat pipes of the first main contraction and bending deformation unit (69) and the second main contraction and bending deformation unit (67) are in the extended limit state. The Yoshimura heat pipes of the first main extended bending deformation unit (79) and the second main extended bending deformation unit (77) are in the contracted limit state.

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