Optimising the roll-sway motion cues available from a short stroke hexapod motion platform

Hodge, Steven J.; Perfect, Philip; Padfield, Gareth D.; White, Mark

doi:10.1017/s000192400001023x

Cited by 14 publications

(16 citation statements)

References 14 publications

(18 reference statements)

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“…Audio cues are presented to the pilot using a system of loudspeakers distributed throughout the interior of the cockpit. This facility has been used to conduct the helicopter landings to the QEC described in this paper, as a testbed for pioneering a route to 'end-to-end' integration of the QEC airwake models, and has also been used to research the fidelity requirements for simulator motion cueing in the highly dynamic aircraft-ship interface environment (Hodge et al, 2015).…”

Section: Rotary-wing Simulationmentioning

confidence: 99%

The Role of Modelling and Simulation in the Preparations for Flight Trials Aboard the Queen Elizabeth Class Aircraft Carriers

Kelly

Watson

Hodge

et al. 2018

Conference Proceedings of INEC

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This paper provides a brief overview of how modelling and simulation has been used to inform preparations for First of Class Flight Trials (FOCFT) aboard HMS Queen Elizabeth, the first of the United Kingdom’s two new Queen Elizabeth Class aircraft carriers, from the perspective of a collaborative research programme undertaken by industry and academia to develop high-fidelity simulations of the carrier’s ‘airwake’. Computer modelling of the unsteady air flow over the carrier, and of the aircraft flight dynamics, have been integrated into high-fidelity flight simulators at BAE Systems Warton, and at the University of Liverpool. The Queen Elizabeth Class (QEC) carriers have primarily been designed to operate the Short Take-Off and Vertical Landing (STOVL) variant of the Lockheed Martin F-35 Lightning II multirole fighter aircraft and will also operate a range of rotary-wing assets. Computational Fluid Dynamics (CFD) has been used to compute the time-varying air flow over and around the 280m long ship, along the F-35B landing approach path and up to 400m astern of the ship. The paper shows a selection of results from the full-scale CFD analysis, and the results from a small-scale experiment that was conducted to provide confidence in the validity of the computed airwakes. The QEC airwakes have been employed by BAE Systems in its fixed-wing flight simulator at Warton, where test pilots have conducted simulated deck landings for a variety of wind over deck conditions, so providing experience for F-35B test pilots and the ship’s Flying Control (FLYCO) crew ahead of FOCFT, which will be conducted later this year. Airwakes have also been implemented in the HELIFLIGHT-R flight simulator at the University of Liverpool, where helicopter landings to the QEC have been simulated using a generic medium-weight maritime-helicopter model. A selection of results from the helicopter flight simulator trials is presented in terms of the workload ratings reported by test pilots, and these are related to the characteristics of the computed airwake at the landing spots tested. The paper demonstrates how modelling and simulation can be used to reduce both the risk and cost of flight trials, by informing the FOCFT planning process, and by highlighting, in advance of the trials, which wind speed and azimuth combinations may require more focus.

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Section: Rotary-wing Simulationmentioning

confidence: 99%

The Role of Modelling and Simulation in the Preparations for Flight Trials Aboard the Queen Elizabeth Class Aircraft Carriers

Kelly

Watson

Hodge

et al. 2018

Conference Proceedings of INEC

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“…Work to optimise motion cues of flight simulators has been attempted in the past, with some examples of previous research outlined in Refs 2, 5 and 22-25. These methods have included optimisation based upon both subjective opinion and objective techniques.…”

Section: Introductionmentioning

confidence: 99%

“…Hodge et al (2,5) combined both the use of subjective pilot opinion and objective supporting analysis to optimise the motion fidelity of a short-stroke hexapod motion platform. Motion fidelity during both a roll-sway and a yaw capture task was assessed using a novel pilot subjective motion rating scale.…”

Section: Introductionmentioning

confidence: 99%

Enhancing motion cueing using an optimisation technique

Jones¹

2018

Aeronaut. j.

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Virtual engineering tools are not currently employed extensively during the certification and commissioning of flight simulator motion systems. Subjective opinion is regarded as sufficient for most applications, as it provides verification that the motion platform does not cause false cueing. However, the results of this practice are systems that may be far from optimal for their specific purpose. This paper presents a new method for tuning motion systems objectively using a novel tuning process and tools which can be applied throughout the simulators life-cycle. The use of the tuning method is shown for a number of simulated test cases.

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“…The third argument comes from the users' side: pilots are still sensing interfering forces resulting from the fact that reaction forces, e. g. the centrifugal force during coordinated turns cannot be replicated due to the limited envelope space that is available for motion systems [5]. Summarizing all arguments above, it can be said that even though objective evaluation methods are to be discussed further, it is generally accepted that efforts have to be made to improve subjective motion cueing [6]. Due to economic aspects new methods for motion drive algorithms are consistently under development because those methods can be used in existing motion systems without any change to the hardware.…”

Section: Introductionmentioning

confidence: 99%