System identification of an airship using trust region reflective least squares algorithm
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Control, Automation and Systems"
DOI: 10.1007/s12555-015-0409-0
Abstract: Lighter than air vehicles present feasible solutions to several problems in aviation industry. Dynamic modeling of airships, however, poses enhanced complexities due to the effects of buoyancy-based static lift and virtual mass and inertia. System… read more here.
Keywords: estimation; system identification; airship; trust region ... See more keywords
A general calculation method to specify center-of-buoyancy for the stratospheric airship with multiple gas cells
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Space Research"
DOI: 10.1016/j.asr.2021.01.014
Abstract: Abstract As the lighter-than-air (LTA) flight vehicle, the stratospheric airship is a desirable platform to provide communication and surveillance services. During the ascent from sea-level to the mission altitude, the volume of the lifting gas… read more here.
Keywords: gas; calculation; center buoyancy; method ... See more keywords
On the development of a parametric aerodynamic model of a stratospheric airship
Sign Up to like & getrecommendations! Published in 2020 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2020.106316
Abstract: Abstract Following the current resurrection of large airship projects for stratospheric flight, a first-order potential flow panel method is presented to calculate pressure coefficients on a parametrically defined airship. Airships need three-dimensional grid definitions that… read more here.
Keywords: development parametric; aerodynamic model; parametric aerodynamic; airship ... See more keywords
Change rules of a stratospheric airship’s envelope shape during ascent process
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2017.02.017
Abstract: Abstract Stratospheric airship is a special near-space air vehicle, and has more advantages than other air vehicles, such as long endurance, strong survival ability, excellent resolution, low cost, and so on, which make it an… read more here.
Keywords: ascent process; shape; envelope; airship ... See more keywords
Thermal performance analysis and comparison of stratospheric airships with rotatable and fixed photovoltaic array
Sign Up to like & getrecommendations! Published in 2018 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2017.12.078
Abstract: Abstract The thermal performance of stratospheric airship is closely related to the superheat/overpressure of airship, the thermal stress of the hull, the mechanics property of the envelope, as well as the airship reliability and lifetime.… read more here.
Keywords: airship; fixed photovoltaic; thermal performance; photovoltaic array ... See more keywords
Yarn Tensile Experiments and Numerical Simulations Based on the Decomposition of Stratospheric Airship Envelopes
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Aerospace Engineering"
DOI: 10.1061/(asce)as.1943-5525.0000833
Abstract: AbstractAs a cost-effective high-altitude platform, stratospheric airships have attracted widespread research interest. A number of studies focused on the mechanical performance of the airship enve... read more here.
Keywords: experiments numerical; tensile experiments; simulations based; yarn tensile ... See more keywords
Improving Patient and Employee Safety through Implementation of an Infection Risk Screening Process for International Patients at Boston Children’s Hospital—The “AIRSHIP” Protocol
Sign Up to like & getrecommendations! Published in 2017 at "Open Forum Infectious Diseases"
DOI: 10.1093/ofid/ofx163.498
Abstract: Abstract Background Vaccine-preventable diseases and multi-drug-resistant organisms (MDROs) are common outside of the US, and multiple infectious outbreaks have been linked to travelers. Boston Children’s Hospital cared for 2796 international patients in 2016 but lacked… read more here.
Keywords: international patients; infection; risk screening; infection risk ... See more keywords
A Novel Design and Implementation of an Autopilot Terrain-Following Airship
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3164737
Abstract: Unmanned Aerial vehicles (UAV) have been utilized in many application domains. UAVs (or Airships, e.g., Drones) have been adopted to explore resources (e.g., minerals). One of the main limitations of using such airships is that… read more here.
Keywords: autopilot; novel design; airship; terrain following ... See more keywords
Finite time attitude tracking control of an autonomous airship
Sign Up to like & getrecommendations! Published in 2018 at "Transactions of the Institute of Measurement and Control"
DOI: 10.1177/0142331216658947
Abstract: The problem of station-keeping attitude tracking control for an autonomous airship with system uncertainties and external disturbances is investigated. Adaptive laws are applied to estimate the upper bounds of uncertainties and disturbances, and a nonlinear… read more here.
Keywords: finite time; control; attitude tracking; tracking control ... See more keywords
Optimum area of solar array for stratospheric solar-powered airship
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/0954410016670420
Abstract: An optimization model of the optimum area of solar array for a stratospheric solar-powered airship is developed. The objective of the optimization is to reduce the mass of the solar array on an airship by… read more here.
Keywords: solar array; array; airship; optimization ... See more keywords
High-altitude airship propulsion system optimal design and experiment based on energy balance
Sign Up to like & getrecommendations! Published in 2023 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/09544100221089700
Abstract: This paper proposes a propulsion optimization method with the surrogate modeling technique based on the coupling relationship between the propulsion and energy subsystem to achieve high-altitude airship weight reduction and figure out key factors. Propeller… read more here.
Keywords: system; propulsion; energy; energy balance ... See more keywords