PatSeer

UNFOLDING MECHANISM FOR WINGS
Pub. No. IN201611010074A
App. No. IN201611010074
App. No. Original IN201611010074
Appl. Date 22-Mar-2016
Pub. Date 26-Jan-2018
Inventor(s) DR PARAS CHAWLA, DR, MS SUKHDEEP KAUR, MR AKASH MITTAL, MR HARMANDEEP, MR LAKHANPAL SINGH, MS EKNOOR KAUR, MR KARAN GARG, MR HITESH VOHRA, MR UDISH KAPOOR, MR GAURAV SARIN, MR NAVPREET SINGH
Assignee Norm. CHANDIGARH GROUP OF COLLEGES CGC (LANDRAN KHARAR BANUR HIGHWAY SECTOR 112 LANDRAN SAHIBZADA AJIT SINGH NAGAR PUNJAB 140307 PUNJAB INDIA, IN)
Current Assignee CHANDIGARH GROUP OF COLLEGES CGC (LANDRAN KHARAR BANUR HIGHWAY SECTOR 112 LANDRAN SAHIBZADA AJIT SINGH NAGAR PUNJAB 140307 PUNJAB INDIA, IN)
Current Owner CHANDIGARH GROUP OF COLLEGES CGC
IPC B64C3/00
ABSTRACT
The present invention provides an arrangement for a frame of a wing, said frame comprising a first link, a second link and a third link, wherein said second link is angular to said first link and said third link. The present disclosure also seeks to provide folding wings of a glider to confine them into limited space. Further the present disclosure also seeks to provide simultaneous unfolding of large wings with least possible springs and jerk.

CLAIMS

1. An arrangement for a frame of a wing, said frame comprising a first link, a second link and a third link, wherein said second link is angular to said first link and said third link, said arrangement comprising: (a) a first unit mounted at a first end of said second link, said first unit comprising (i) two gears of a first type, said two gears comprising a first gear and a second gear; and (ii) a spring to couple said first link and said second link, wherein said first link is mounted on said first end of said second link; and (b) a second unitmounted at a second end of said second link, said second unit comprising (i) two gears of said first type, said two gears comprising a first gear and a second gear; (ii) a gear of a second type, wherein said second gear of said second unit is rigidly coupled to said gear of second type; and (iii) a gear of a third type mounted on said third link, wherein said gear of said second type is meshed with said gear of said third type.

2. An arrangement as claimed in claim 1, wherein said first gear of said first unit is fixedly mounted on said first link, and said second gear of said first unit is rotatably mounted on said second link.

3. An arrangement as claimed in claim 2, wherein said first gear of said first unit is meshed with said second gear of said first unit.

4. An arrangement as claimed in claim 1, wherein said first gear of said second unit is fixed, said second gear of said second unit is rotatable, and said gear of said third type is rotatable.

5. An arrangement as claimed in claim 1, wherein diameter of said second type is larger than diameter of said first type.

6. An arrangement as claimed in claim 1, wherein diameter of said third type is smaller than diameter of said first type.

7. An arrangement as claimed in claim 1, wherein each of said first and second gears of said first unit, and said first and second gears of said second unit have a pulley of same size.

8. An arrangement as claimed in claim 1, wherein a thread is looped between said first unit and said second unit.

9. An arrangement as claimed in claim 1, wherein said arrangement is operable to unfold the wing.


DESCRIPTION
























FIELD OF THE INVENTION

The present invention relates to aero-wings. More particularly, it relates to a folding and unfolding mechanism for wings for a glider that can be used as science vehicle. The mechanism discloses the gear and pulley arrangements to accomplish the unfolding of links by limited number of springs.

BACKGROUND OF THE INVENTION

Aglideris often recognized as a small plane. Basically a glider is heavier than aero-planethat is supported in flight by the dynamic reaction of the air against its lifting surfaces, and whosefree flightdoes not depend on an engine. Most gliders do not have an engine, althoughmotor-glidershave small engines for extending their flight. Gliders are aerodynamically streamlined and are capable of soaring in rising air.

Gliders have wide application across the world; they are very popular inair sportsofgliding,hang glidingandparagliding. However, one of the most important applications of the glider has been observed in the spacecraft. The spacecraft have been designed to descend as gliders and in the pastmilitary glidershave been used in warfare. A space vehicle or glider should be small and light that can easily be pulled out from the earth’s atmosphere. It should be carried easily by the up thrust produced by the rocket propulsion. The glider wings are one of the crucial factors. The glider wings have rigid wing surface which totally encases wing structure. The rigid set of wings takes ore volume and space. In some of the earlier development the need of the foldable wings has been observed. EP0803701 discloses a “Multi-axis unfolding mechanism with rate controlled synchronized movement”. However, this mechanism lacks aero foil wings, lacks hydraulics. Further, the presently available glider wingslacks in providing folding of thewings so as to confine them into limited space and simultaneous unfolding of large wings with least possible springs and jerk.

SUMMARY OF THE INVENTION

The present disclosure seeks to provide aarrangement for a frame of a wing. The present disclosure also seeks to provide a solution to the problem of folding of wings so as to confine them into limited space and simultaneous unfolding of large wings with least possible springs and jerk.

In one aspect, an embodiment of the present disclosure provides anarrangement for a frame of a wing, said frame comprising a first link, a second link and a third link, wherein said second link is angular to said first link and said third link. The arrangement further comprising: a first unit mounted at a first end of said second link, said first unit comprising two gears of a first type, said two gears comprising a first gear and a second gear; and a spring to couple said first link and said second link, wherein said first link is mounted on said first end of said second link; and a second unit mounted at a second end of said second link, said second unit comprising two gears of said first type, said two gears comprising a first gear and a second gear; a gear of a second type, wherein said second gear of said second unit is rigidly coupled to said gear of second type; and a gear of a third type mounted on said third link, wherein said gear of said second type is meshed with said gear of said third type.

Further, the arrangement for a frame of a wing reduces the amount of jerk produced as compare to when only springs are used at each joint between links. It increases reliability in unfolding and accuracy of joints is also maintained.

Embodiments of the present disclosure substantially eliminate or at least partially address the aforementioned problems in the prior art, and provide an efficientarrangement for a frame of a wing of a glider.

Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments construed in conjunction with the appended claims that follow.

It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.

Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:

FIG. 1 illustrated is a schematic illustration of an arrangement for a frame of a wing of a small or medium sized glider, in accordance with an embodiment of the present disclosure;

FIG. 2A-B illustrated is a schematic illustration of the first unit of the arrangement for the frame, in accordance with an embodiment of the present disclosure; and

FIG. 3 illustrated is a schematic illustration of the second unit of the arrangement for the frame, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION

As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.

Various other objects, advantages, and features of the invention will become more readily apparent to those skilled in the art from the following detailed description when read in conjunction with the accompanying drawings, in which like reference numerals designate like parts throughout the figures thereof.

Modifications to embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.

In one aspect, an embodiment of the present disclosure provides an arrangement for unfolding a wing of a small or medium sized glider. The arrangement for unfolding a wing is a self unfolding mechanism.

Referring to FIG. 1, illustrated is a schematic illustration of an arrangement for a frame of a wing of a small or medium sized glider, in accordance with an embodiment of the present disclosure. The arrangement for the frame includes a first link 01, a second link 02 and a third link 03.

In an embodiment, the second link 02 is angular to the first link 01 and the third link 03, the arrangement.

According to an embodiment, the arrangement for the frame of the wing further comprises of a first unit 04 mounted at a first end 05 of the second link 02. In such embodiment, the first unit 04 includes two gears of a first type 06, such as a first gear 07 and a second gear 08, and a spring 09(shown with Fig 2) for coupling the first link 01 and the second link 02. Further, the spring 09 couples the first link 01 and the second link 02 in a manner wherein thefirst link 01is mounted on the first end 05 of the second link 02.

According to an embodiment, the arrangement for the frame of the wing further comprises of a second unit 10 mounted at a second end 11 of said second link 02. In such embodiment, the second unit 10 includes two gears of the first type 06, such as a first gear 12 and a second gear 13, a gear of a second type 14, wherein said second gear 13 of the second unit 10 is rigidly coupled to the gear of second type 14; and a gear of a third type 15 mounted on the third link 03, wherein the gear of the second type 14 is meshed with the gear of said third type 15. In an embodiment, the gear of a second type 14is larger than thetwo gears of the first type 06and the gear of a third type 15is smaller than the diameter of thetwo gears of the first type 06.

Referring to FIG. 2 A-B, illustrated is a schematic illustration of the first unit 04 of the arrangement for the frame, in accordance with an embodiment of the present disclosure. The first unit 04 includes the first link 01, the first gear 07, the second link 02, a second gear 08 and the spring 09.

In an embodiment, the first gear 07 of said first unit 04 is fixedly mounted on the first link 01, and the second gear 08 of said first unit 04 is rotatably mounted on the second link 02. Further, in such embodiment, the first gear 07 of said first unit 04 is meshed with the second gear 08 of said first unit 04. In such embodiment, the first gear 07 and second gear 08 of said first unit is includes pulley.

In an embodiment, the first link 01 ismounted on the first gear 07 at a point P and the second link 02 ismounted on the second gear 08 at a point Q. Further, the gears may be mounted on the links using a screw or a pin. In such embodiment, on rotating the first link 01 against the spring 09 and about the point P, the first gear 07 rotates the second gear 08 about the point Q.

Referring to FIG. 3, illustrated is a schematic illustration of the second unit 10 of the arrangement for the frame, in accordance with an embodiment of the present disclosure. The second unit 10 includes gears of the first type 06, the second type 14 and third type 15.

In an embodiment, the gears of the first type 06 such as first gear 12 is rotatably mounted and the second gear 13 is fixedly mounted on the second link 02. The first gear 12 and the second gear 13 are meshed with one another. In such embodiment, the gear of a second type 14 is positioned at a point R over the second gear 13 of the gears of the first type 06. Further, the gear of a third type 15 is positioned at the point S on the third link 03 and is meshed with the gear of a second type 14. In such embodiment, the first gear 12 of the second link 02 is rotated around the point R, which is rigidly connected to the gear of a second type 14, results in moving the pulley in a looped form, which further results in looping of the thread around the pulley and move the second gear 08.

In one embodiment, the movement of the gear of a third type 15 and the mesh of the gears first type such as first gear 12 and second gear 13 are independently used. Further, due to motion of thread and hence of the gears of first type of link second 02 the assembly of first link 01 and second link 02 would rotate about point S. In such embodiment, during the movement of the second gear 13 of the second link 02 the gear of a third type 15 rotates which results in the motion of the thread around its pulley to take loop that further transmits motion to another end of third link 03. In an embodiment, arrangement is operable to unfold the wing.

In one embodiment, the arrangement for a frame of a wing reduces the amount of jerk produced as compare to when only springs are used at each joint between links. It increases reliability in unfolding and accuracy of joints is also maintained. Complete folding of wings is achievable without interference. One point locking is reliably sufficient. Use of limited number of springs facilitates easy folding. The mechanism can also be used where at large distance simultaneous action without delay is needed.

While the disclosure has been presented with respect to certain specific embodiments, it will be appreciated that many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the disclosure. It is intended, therefore, by the appended claims to cover all such modifications and changes as fall within the true spirit and scope of the disclosure.