Methods for manufacturing an I-stringer of an aircraft and devices for use in such methods

• US 9,694,898 B2
• Filed: 09/27/2016
• Issued: 07/04/2017
• Est. Priority Date: 10/29/2013
• Status: Active Grant

• Current Assignee: Gulfstream Aerospace Corporation (General Dynamics Corporation)
• Original Assignee: Gulfstream Aerospace Corporation (General Dynamics Corporation)
• Inventors: Aitken, Charles, Autry, Brenden A.
• Primary Examiner(s): Chang, Richard
• Application Number:
  US15/277,821
• Publication Number:
  US 20170029137A1
• Time in Patent Office: 280 Days
• CPC Class Codes: B29C 33/405 Elastomers, e.g. rubber B29C33/50 takes precedence
• CPC Class Codes: B29C 70/222 the structure being shaped to form a three dimensional configuration
• CPC Class Codes: B29C 70/42 for producing articles of definite length, i.e. discrete articles
• CPC Class Codes: B29C 70/44 using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
• CPC Class Codes: B29C 70/50 for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
• CPC Class Codes: B29C 70/504 using rollers or pressure bands for corrugating B29C53/22
• CPC Class Codes: B29C 70/54 Component parts, details or accessories; Auxiliary operations , e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
• CPC Class Codes: B29C 70/865 completely encapsulated
• CPC Class Codes: B29D 99/0007 having a variable cross-section
• CPC Class Codes: B29D 99/001 Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings articles with hollow walls B29D24/00
• CPC Class Codes: B29L 2031/3076 Aircrafts blades, propellers B29L2031/08
• CPC Class Codes: B64C 1/064 Stringers; Longerons
• CPC Class Codes: B64C 1/26 Attaching the wing or tail units or stabilising surfaces
• CPC Class Codes: B64C 2001/0072 from composite materials
• CPC Class Codes: B64C 3/182 Stringers, longerons
• CPC Class Codes: B64F 5/10 Manufacturing or assembling aircraft, e.g. jigs therefor
• CPC Class Codes: Y02T 50/40 Weight reduction
• CPC Class Codes: Y10T 29/49622 Vehicular structural member making
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

Methods for manufacturing a reinforced composite structure for an aircraft and devices used in such methods are provided. A device includes a base, a first support member fixedly attached to the base, and a second support member fixedly attached to the base and aligned longitudinally with the first support member. The first support member and the second support member are spaced a first distance apart. Two pinching wheels are spaced a second distance apart. The two pinching wheels are positioned proximate to ends of the first support member and the second support member. The second distance is less than the first distance. The two pinching wheels are configured to receive a composite material layout between them and to cause two lengths of the composite material layout to contact each other.

Claims

1. A device for forming a cap section of an I-stringer of an aircraft, the device comprising:

a base;

a first support member fixedly attached to the base;

a second support member fixedly attached to the base and aligned parallel to the first support member, wherein the first support member and the second support member are spaced a first distance apart; and

two pinching wheels spaced a second distance apart, wherein the two pinching wheels are positioned proximate to ends of the first support member and the second support member, wherein the second distance is less than the first distance, and wherein the two pinching wheels are configured to receive a composite material layout between them and to cause two opposing lengths of the composite material layout to contact each other.

2. The device of claim 1, further comprising a first diagonal member supported by the first support member and having a first end, and

a second diagonal member supported by the second support member and having a first end, wherein the first diagonal member forms an angle with the second diagonal member and the first end of the first diagonal member is spaced a third distance from the first end of the second diagonal member, and wherein a center of the first distance is co-linear with a center of the third distance.

3. The device of claim 2, wherein the center of the second distance is co-linear with the center of the first distance and the center of the third distance.

4. The device of claim 1, further comprising a vertical wheel configured to roll along the base between the first support member and the second support member.

5. The device of claim 4, wherein the vertical wheel is configured to roll along a center of the first distance.

6. The device of claim 4, further comprising:

a first rail fixedly coupled to the base;

a second rail fixedly coupled to the base;

a rod rotatably coupled to the first rail and the second rail and supporting the vertical wheel.

7. An apparatus comprising:

a first support member having a first end;

a second support member having a first end and aligned parallel to the first support member, wherein the first support member and the second support member are spaced a first distance apart;

a vertical wheel configured to roll between the first support member and the second support member;

two pinching wheels spaced a second distance apart, wherein the two pinching wheels are positioned proximate to the first ends of the first support member and the second support member and wherein the second distance is less than the first distance;

a first diagonal member supported by the first support member;

a second diagonal member supported by the second support member, wherein the first diagonal member forms an angle with the second diagonal member and each have ends that are spaced a third distance apart from each other, wherein a center of the first distance is co-linear with a center of the third distance.

8. The apparatus of claim 7 further comprising a base to which the first support member and the second support member are fixedly attached.

9. The apparatus of claim 8, further comprising:

a first rail fixedly attached to the first support member;

a second rail fixedly attached to the second support member;

a rod rotatably coupled to the first rail and the second rail and supporting the vertical wheel such that the vertical wheel is configured to roll along the base.

10. The apparatus of claim 7, wherein the two pinching wheels are configured to receive a composite material layout between them and cause two lengths of the composite material layout to contact each other.

11. An apparatus comprising:

a base;

a first support member supported by the base and having a first end;

a second support member supported by the base and having a first end and aligned parallel to the first support member;

two pinching wheels positioned proximate to the first ends of the first support member and the second support member;

a first diagonal member supported by the first support member;

a second diagonal member supported by the second support member, wherein the first diagonal member forms an angle with the second diagonal member and wherein each have ends that are proximate to the first ends of the first support member and the second support member and to the two pinching wheels; and

a vertical wheel configured to roll between the first support member and the second support member and between the first diagonal member and the second diagonal member.

12. The apparatus of claim 11, further comprising:

a first rail fixedly attached to the first support member;

a second rail fixedly attached to the second support member;

a rod rotatably coupled to the first rail and the second rail and supporting the vertical wheel such that the vertical wheel is configured to roll along the base.

13. The apparatus of claim 11, wherein the two pinching wheels are configured to receive a composite material layout between them and cause two lengths of the composite material layout to contact each other.