---
publication_id: "OT-2026-000002258"
title: "Force sensing bolt for a torque measurement system on a gearbox of a gas turbine engine"
published_at: "2026-09-15T19:11:48.654896Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000002258"
categories:
  - "sensors-controls-machine-vision/force-and-pressure-sensing"
keywords:
  - "f01d17/04"
  - "g01l5/24"
  - "g01l5/24"
  - "f01d21/00"
  - "f01d21/003"
  - "f01d21/003"
---

# Force sensing bolt for a torque measurement system on a gearbox of a gas turbine engine

## Abstract

A turboshaft engine transmission with a torque measurement system is provided. The turboshaft engine transmission includes a front housing, a rear housing, a mating flange axially interposed between the front and rear housings, the mating flange defining a sensing bolt hole, assembly bolts disposed to assemble the front and rear housings to the mating flange with a preload sufficient to maintain assembly during engine operational conditions and a sensing bolt installed in the sensing bolt hole to measure forces exerted on the mating flange by the front and rear housings.