Star structure layout of recreational airplane to reduce stress in unsymmetric flight

Goodarzi, Mohammad Saeed; Sarkheil, Saeed; Torbaty, Saeid; Mirzaei, Masoud; Aghayari, Jamal

doi:10.22034/stme.2026.543536.1162

Star structure layout of recreational airplane to reduce stress in unsymmetric flight

Articles in Press

Document Type : Original Article

Authors

Mohammad Saeed Goodarzi ¹

saeed sarkheil ²

saeid torbaty ³

masoud mirzaei ⁴

Jamal Aghayari ⁵

¹ Department of Industrial Mechanical and Aerospace Engineering, Buein Zahra Technical University, Qazvin, Iran

² Transportation Research Institute, Tehran, Iran

³ Department of Mechanical Engineering, Tehran University, Tehran, Iran

⁴ Khajeh Nasir Research Ineptitude, Tehran, Iran

⁵ Transportation Research Insititute, Tehran, Iran

10.22034/stme.2026.543536.1162

Abstract

Inertial loads play an important role in structural design of Multirotors in vertical take-off of Recreational Manned-multirotor. In this paper a star layout for the support structure of motors and cabin of a manned recreational multirotor has been introduced. First the stress levels has been evaluated due to the maximum trust of motors using static finite element modeling. Afterward, time-dependent dynamic effects of applied motor loads have been investigated in take-off and Pull-up maneuvers on internal stresses using nonlinear dynamic finite element analysis. The effects of the pull-up maneuver as the most severe maneuver for this recreational multirotor have been studied within symmetric and unsymmetric conditions. The finite element results show that proper restrain of motors and inertial loads by the star layout leads to reduction of stress in unsymmetrical rather than symmetric pull-up maneuver. Moreover, performed frequency analysis in flight boundary conditions shows adequacy of the proposed star layout structure in the manner of natural frequency and motor working frequency (6.23 to 21.6 Hz).

Keywords

Recreational Multirotor

Stress Analysis

Finite Element Model

Dynamic Analysis

Star-shaped structure layout

Subjects