Dimensional Engineering Approaches to Structural Assembly Precision in Electric Vertical Takeoff and Landing Aircraft

Srinivasrao Balaga

Citation: Srinivasrao Balaga, "Dimensional Engineering Approaches to Structural Assembly Precision in Electric Vertical Takeoff and Landing Aircraft", Universal Library of Engineering Technology, Volume 03, Issue 04.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electric vertical takeoff and landing aircraft compress weight limits, dense system integration, certification pressure, and low tolerance for geometric drift into a single structural problem. The article develops an eVTOL-specific dimensional-engineering framework for structural assembly precision. The framework extends an applied methodology previously developed by the author for vehicle-level variation reduction through 3DCS tolerance simulation, ADAMS/Car response modeling, mode FRONTIER-based design of experiments, sensitivity screening, cost-aware tolerance optimization, and six-sigma robustness targets. This methodology is transferred from suspension hardpoint and stiffness-compliance variation to eVTOL airframe assembly, where structural interfaces, datum continuity, robotic joining accuracy, certification evidence, and measured-geometry feedback form a single control chain. The article uses recent research on eVTOL requirement validation, airworthiness constraints, composite wing-box manufacturing, robotic drilling and inspection, deviation propagation, and digital-twin-based tolerance control to verify and position the proposed framework. The author’s contribution comprises an interface-ranking logic, a data-continuity and process-capability model, a closed-loop tolerance-reallocation sequence, and monitoring metrics for early industrial deployment in eVTOL structural programs.


Keywords: eVTOL, Dimensional Engineering, Assembly Precision, Aerostructures, Tolerance Allocation, Robotic Drilling, Digital Twin, Composite Wing Box, Geometry Assurance, Datum Control.

Download doi https://doi.org/10.70315/uloap.ulete.2026.0304001