Real-time simulation model for helicopter flight task analysis in turbulent atmospheric environment

The aerodynamic interference between the different components of quad-tiltrotor (QTR) aircraft were considered to analyze its influence on trim characteristics. A comprehensive method with the fixed-wake model was developed for multiple aerodynamic interactions, improving the accuracy of the flight dynamics analysis. Additionally, a more general control strategy was developed to tackle the redundant control issue of the QTR, improving its control efficiency by coordinating the authority relationship of various control surfaces across the flight range. Then, the trim features were calculated in the helicopter mode, conversion mode, and airplane mode, and the relevant results with and without interaction were compared. The results show that the aerodynamic interaction mainly influences the body’s vertical force, longitudinal force, and pitching moment. Furthermore, there are significant differences between collective and longitudinal sticks and pitch attitudes. The interference plays a major role in helicopter and conversion modes with a less-than-30-degree tilt angle.

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“…The whole model has 16 degrees of freedom, and its general nonlinear equations of motion take the form [23]:…”

Section: Integrated Equations Of the Vehiclementioning

confidence: 99%

Aerodynamic Interference on Trim Characteristics of Quad-Tiltrotor Aircraft

et al. 2022

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“…The calculation of aerodynamics is similar to conventional method [9,27]. The airfoil section is calculated according to the airfoil aerodynamics look-up table.…”

Section: Rotormentioning

confidence: 99%

Propeller design to improve flight dynamics features and performance for coaxial compound helicopters

Yuan

Chen

Thomson

2020

Aerospace Science and Technology

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“…Over the past few decades, the researchers in the field of reliability modelling have done a lot of research work in a variety of areas and the aviation industry is not an exception in this regard. Many researchers, including [1] - [11], have contributed to the field of aviation research by considering different aircrafts and the systems/devices necessary for adequate functioning of aircrafts. Bigel and Winsten [1] presented an historical overview of the reliability and maintainability growth of F-14A fighter aircraft.…”

Section: Introductionmentioning

confidence: 99%

“…ɋ ij (t) are given by:. It follows from the equations(11) to (14) that:(16)VII. SOJOURN TIMESAs defined in[5], following expressions for mean sojourn times (և i ) and contribution to mean sojourn times have been obtained: From the above expression, it follows that: Time to Filter Clogging (MTFC)Reckoning the state of filter clogging, i.e.…”

mentioning

confidence: 99%

Stochastic Modelling of an Aircraft Considering the Possibility of Precautionary Landing Due to Fuel Filter Clogging

Singh,

Taneja

2020

IJEAT

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The present work deals with the stochastic and cost - benefit analysis of a helicopter taking into account the situation of precautionary landing caused by blockage in its fuel - filter. The system has been analysed by developing a model and finding the various indices of system effectiveness like mean time to filter clogging, expected up (flying) time, expected number of precautionary landings etc. The regenerative point technique has been used for the purpose. The obtained measures have been further used to analyse the profit generated by the system. Graphical study of the proposed model has also been done. The suggested methodology finds its application in commercial aviation sector

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Real-time simulation model for helicopter flight task analysis in turbulent atmospheric environment

Cited by 20 publications

References 18 publications

Aerodynamic Interference on Trim Characteristics of Quad-Tiltrotor Aircraft

Aerodynamic Interference on Trim Characteristics of Quad-Tiltrotor Aircraft

Propeller design to improve flight dynamics features and performance for coaxial compound helicopters

Stochastic Modelling of an Aircraft Considering the Possibility of Precautionary Landing Due to Fuel Filter Clogging

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