About: Hard landing is a research topic. Over the lifetime, 111 publications have been published within this topic receiving 858 citations. The topic is also known as: Hard landing.
TL;DR: In this article, the effects of pilot's critical flare operation on long and hard landing events based on real flight Quick Access Recorder (QAR) data were examined and two regression models were developed to analyze the potential correlations between flare operations and landing performance.
TL;DR: Experimental results prove this model is effective and accurate for hard landing prediction, which helps to guarantee passengers’ safety and reduce the incidence of landing accidents, and is conducive to making an innovation for building and developing the industrial IoT systems in aviation field.
TL;DR: In this paper, the authors used a computer that measured signals from an inertial measurement unit (IMU) at high data rates (e.g. 100 Hz) and also recorded signals from the aircraft avionics data bus to determine whether the aircraft's three dimensional landing deceleration is safely within the design allowances or other regulatory limitations.
Abstract: This invention allows for the precise determination of an aircraft's landing conditions and whether an aircraft has experienced a hard landing that exceeds the allowable design loads of the aircraft's landing gear. The system comprises a computer that measures signals from an inertial measurement unit (IMU) at high data rates (e.g. 100 Hz) and also records signals from the aircraft avionics data bus. The computer compares the output from the inertial measurement unit's accelerometers against at least one predetermined threshold parameter to determine whether the aircraft's three dimensional landing deceleration is safely within the design allowances or other regulatory limitations, or whether the landing event needs further investigation.
TL;DR: A helicopter in a commercial flight was substantially damaged during a hard landing following a loss of engine power at Northwest region of Brazil as mentioned in this paper, due to the failure of a blade from compressor section.
TL;DR: In this paper, a seat unit for use in a military land vehicle or helicopter includes a stroking device that enables the seat to move downwardly in response to sudden movement of the occupant in the seat.
Abstract: Various embodiments of seat harness pretensioning devices for use in land, air, and sea vehicles are described herein. In one embodiment, a seat unit for use in a military land vehicle or helicopter includes a stroking device that enables the seat to move downwardly in response to sudden movement. The seat unit also includes a seat belt or harness that extends around the occupant in the seat. Sudden movement of the seat in response to an explosion or hard landing causes a tensioning system to automatically pretension the seat harness.