Research on key charrecteristics of aircraft product assembly process to improve assembly accuracy

Miah, Helal; Chand, Dillip Kumar; Malhi, Gurmail Singh

doi:10.1201/9781003358596-37

Cited by 1 publication

(2 citation statements)

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“…Different approaches are used during the design and manufacture of aircraft assemblies (AA) [1][2][3]. In this case, it is interested in the loft-template method (LTM) and reverse engineering.…”

Section: Introductionmentioning

confidence: 99%

“…to(1), the amount of deviation of the actual position of the contour of the stabilizer leading edge from the theoretical position will be equal to:δ lΣ =-1.1 mm.The expected (calculated) error does not exceed the tolerance value for the outer contour of the stabilizer ( δ stab [ ]= = ±2 mm[12]), i. e. assembly in the slipway based on the surface of the frame with the LTM tying method ensures the specified geometric accuracy.…”

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confidence: 99%

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Mathematical models creation for calculating dimensional accuracy at the construction stages of an analytical standard using the chain method

Vorobiov,

Maiorova,

Voronko

et al. 2024

TAPR

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The object of research is the process of forming a mathematical model (MM) for calculating accuracy at the stages of construction an analytical standard (AS) using the chain method, the application of which is shown on the example of an aviation object (AO). The analysis of the investigated AO, namely the helicopter stabilizer, was carried out using modern 3D scanners and the creation of its analytical portrait (AP). The problem is to create the most similar AP and compare it with AS, taking into account the results of the calculations. The following results were obtained: the AS was built and the AP of the stabilizer geometry was created, a comparative analysis of the AP and AS was carried out, and the results of the accuracy of the object geometry calculations were obtained. Aerodynamic calculations of stabilizer characteristics were also carried out, analysis of standardized aerodynamic profiles was carried out taking into account the accepted limitations for forming the stabilizer AS. The scientific and practical novelty of the obtained results is as follows: the created MM for calculating the accuracy of the dimensions of the unit contour using the chain method made it possible to estimate the tying errors that occur when using the loft-template method. This made it possible to choose equipment and software for construction the AS stabilizer. The selection of improved values of the object's aerodynamic characteristics made it possible to build an AS based on the standardized NACA 0012 profile. This can be used as an information basis for the organization of small-scale production of the object under study. That is, in general, the process of reverse engineering made it possible to conduct a detailed analysis of sections, aerodynamic characteristics and improve them for the future improved profile. This design approach provides wider opportunities, eliminates intermediate links and maintains high accuracy of object parameters during its manufacture, which is one of the main requirements in aircraft construction.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%