{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:13:40Z","timestamp":1760235220285,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T00:00:00Z","timestamp":1627430400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/R026173\/1"],"award-info":[{"award-number":["EP\/R026173\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Robotics"],"abstract":"<jats:p>A drive to reduce costs, carbon emissions, and the number of required personnel in the offshore energy industry has led to proposals for the increased use of autonomous\/robotic systems for many maintenance tasks. There are questions over how such missions can be shown to be safe. A corollary exists in the manned aviation world for helicopter\u2013ship operations where a test pilot attempts to operate from a ship under a range of wind conditions and provides subjective feedback on the level of difficulty encountered. This defines the ship\u2013helicopter operating limit envelope (SHOL). Due to the cost of creating a SHOL there has been considerable research activity to demonstrate that much of this process can be performed virtually. Unmanned vehicles, however, have no test pilot to provide feedback. This paper therefore explores the possibility of adapting manned simulation techniques to the unmanned world to demonstrate that a mission is safe. Through flight modelling and simulation techniques it is shown that operating envelopes can be created for an oil rig inspection task and that, by using variable performance specifications, these can be tailored to suit the level of acceptable risk. The operating envelopes produced provide condensed and intelligible information regarding the environmental conditions under which the UAS can perform the task.<\/jats:p>","DOI":"10.3390\/robotics10030097","type":"journal-article","created":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T21:21:04Z","timestamp":1627507264000},"page":"97","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Towards the Determination of Safe Operating Envelopes for Autonomous UAS in Offshore Inspection Missions"],"prefix":"10.3390","volume":"10","author":[{"given":"Vincent","family":"Page","sequence":"first","affiliation":[{"name":"Department of Mechanical, Materials and Aerospace Engineering, Faculty of Science and Engineering, School of Engineering, University of Liverpool, Liverpool L69 3BX, UK"}]},{"given":"Christopher","family":"Dadswell","sequence":"additional","affiliation":[{"name":"Department of Mechanical, Materials and Aerospace Engineering, Faculty of Science and Engineering, School of Engineering, University of Liverpool, Liverpool L69 3BX, UK"}]},{"given":"Matt","family":"Webster","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Technology, School of Computer Science and Mathematics, Liverpool John Moores University, Liverpool L2 2QP, UK"}]},{"given":"Mike","family":"Jump","sequence":"additional","affiliation":[{"name":"Department of Mechanical, Materials and Aerospace Engineering, Faculty of Science and Engineering, School of Engineering, University of Liverpool, Liverpool L69 3BX, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0875-3862","authenticated-orcid":false,"given":"Michael","family":"Fisher","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Faculty of Science and Engineering, School of Engineering, University of Manchester, Manchester M13 9PL, UK"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,28]]},"reference":[{"key":"ref_1","unstructured":"Soubry, A., and Leadsom, A. (2021, January 07). Oil and Gas Workforce Plan. HM Government. July 2016, Available online: https:\/\/assets.publishing.service.gov.uk\/government\/uploads\/system\/uploads\/attachment_data\/file\/535039\/bis-16-266-oil-and-gas-workforce-plan.pdf."},{"key":"ref_2","unstructured":"Cable, V., Davey, E., Moore, M., and Ballard, G. (2021, January 07). UK Oil and Gas: Business and Goverment Actio. HM Government. March. 2013, Available online: https:\/\/assets.publishing.service.gov.uk\/government\/uploads\/system\/uploads\/attachment_data\/file\/175480\/bis-13-748-uk-oil-and-gas-industrial-strategy.pdf."},{"key":"ref_3","unstructured":"Wooldridge, M. (2009). An Introduction to Multiagent Systems, John Wiley & Sons. [2nd ed.]."},{"key":"ref_4","unstructured":"(2015). CAP 722 Unmanned Aircraft System Operations in UK Airspace: Guidance, UK Civil Aviation Authority."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Huang, H. (2007). Autonomy Levels for Unmanned Systems (ALFUS) Framework.","DOI":"10.6028\/NIST.SP.1011-II-1.0"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Scanlan, J., Flynn, D., Lane, D., Richardson, R., Richardson, T., and Sobester, A. (2018). Extreme Environments Robotics: Robotics for Emergency Response, Disaster Relief and Resilience, UK-RAS Network.","DOI":"10.31256\/WP2017.4"},{"key":"ref_7","first-page":"13","article-title":"Helicopter\/Ship Qualification Testing: Part 1 Ductch\/British Clearance Process","volume":"22","author":"Carico","year":"2003","journal-title":"NATO RTO"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1020","DOI":"10.2514\/1.C031525","article-title":"Ship-Helicopter Operating Limits Prediction Using Piloted Flight Simulation and Time-Accurate Airwakes","volume":"49","author":"Forrest","year":"2012","journal-title":"J. Aircr."},{"key":"ref_9","unstructured":"Finlay, B.A. (2001, January 7\u20138). Ship Helicopter Operating Limit Testing\u2013Past, Present and Future. Proceedings of the RAeS Rotorcraft Group Conference on \u2018Helicopter Operations in the Maritime Environment\u2019, London, UK."},{"key":"ref_10","unstructured":"Advani, S.K., and Wilkinson, C.H. (2001, January 7\u20138). Dynamic Interface Modelling and Simulation: A Unique Challenge. Proceedings of the Royal Aeronautical Society Conference on Helicopter Flight Simulation, Royal Aeronautical Soc. (RAeS), London, UK."},{"key":"ref_11","unstructured":"Healey, J.V. (1986). Simulating the Helicopter-Ship Interface as an Alternative to Current Methods of Determining the Safe Operating Envelopes, Naval Postgraduate School."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Roscoe, M.F., and Wilkinson, C.H. (2002, January 5\u20138). DIMSS-JSHIP\u2019s M&S Process for Ship Helicopter Testing and Training. Proceedings of the AIAA Modeling and Simulation Technologies Conference and Exhibit, Monterey, CA, USA.","DOI":"10.2514\/6.2002-4597"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1833","DOI":"10.1017\/aer.2017.102","article-title":"A virtual engineering approach to the ship-helicopter dynamic interface\u2013A decade of modelling and simulation research at the University of Liverpool","volume":"121","author":"Owen","year":"2017","journal-title":"Aeronaut. J."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1155","DOI":"10.1017\/S0001924000007545","article-title":"Simulating the Environment at the Helicopter-Ship Dynamic Interface: Research, Development and Application","volume":"116","author":"Hodge","year":"2012","journal-title":"Aeronaut. J."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Kelly, M., Watson, N.A., Hodge, S.J., White, M.D., and Owen, I. (2018, January 2\u20134). The Role of Modelling and Simulation in the Preparations for Flight Trials Aboard the Queen Elizabeth Class Aircraft Carriers. Proceedings of the 14th International Naval Engineering Conference, Glasgow, UK. Available online: https:\/\/doi.org\/10.24868\/issn.2515-818X.2018.037.","DOI":"10.24868\/issn.2515-818X.2018.037"},{"key":"ref_16","first-page":"854","article-title":"SIMSHOL: A Predictive Simulation Approach to Inform Helicopter\u2013Ship Clearance Trials","volume":"57","author":"Memon","year":"2020","journal-title":"AIAA"},{"key":"ref_17","unstructured":"Page, P., Webster, M., Fisher, M., and Jump, M. (2019, January 2\u20136). Towards a Methodology to Test UAVs in Hazardous Environments. Proceedings of the ICAS 2019, The Fifteenth International Conference on Autonomic and Autonomous Systems, Athens, Greece."},{"key":"ref_18","unstructured":"Fell, T.R., White, M.D., and Owen, I. (2015, January 27\u201329). Sensitivity study of a small maritime rotary UAS operating in a turbulent airwake. Proceedings of the 71st AHS Forum, Virginia Beach, VA, USA."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1017\/aer.2018.12","article-title":"Validation of the FLIGHTLAB Virutal Engineering Toolset","volume":"122","author":"Val","year":"2018","journal-title":"Aeronaut. J."},{"key":"ref_20","unstructured":"Padfield, G.D. (1996). Helicopter Flight Dynamics, Blackwell Science Ltd.. [1st ed.]."},{"key":"ref_21","unstructured":"Furgeson, D., Likhachev, M., and Stentz, A. (2005, January 5\u201310). A guide to heuristic-based Path Planning. Proceedings of the ICAPS\u201905 15th International Conference on Automated Planning & Scheduling, Monterey, CA, USA."},{"key":"ref_22","unstructured":"(2021, January 07). Moss CS50 MKII Oil Platform. Available online: https:\/\/grabcad.com\/library\/moss-cs50-mkii-oil-platform."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Webster, M., Western, D., Araiza-Illan, D., Dixon, C., Eder, K., Fisher, M., and Pipe, A. (2020). A Corroborative Approach to Verification and Validation of Human-Robot Teams. Int. J. Robot. Res., 39.","DOI":"10.1177\/0278364919883338"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Fisher, M., Cardoso, R.C., Collins, E.C., Dadswell, C., Dennis, L.A., Dixon, C., Farrell, M., Ferrando, A., Huang, X., and Jump, M. (2021). An Overview of Verification and Validation Challenges for Inspection Robots. Robotics, 10.","DOI":"10.3390\/robotics10020067"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Shima, T., and Rasmussen, S. (2009). UAV Cooperative Decision and Control: Challenges and Practical Approaches, Society for Industrial and Applied Mathematics.","DOI":"10.1137\/1.9780898718584"}],"container-title":["Robotics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2218-6581\/10\/3\/97\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T06:36:21Z","timestamp":1760164581000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2218-6581\/10\/3\/97"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7,28]]},"references-count":25,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2021,9]]}},"alternative-id":["robotics10030097"],"URL":"https:\/\/doi.org\/10.3390\/robotics10030097","relation":{},"ISSN":["2218-6581"],"issn-type":[{"type":"electronic","value":"2218-6581"}],"subject":[],"published":{"date-parts":[[2021,7,28]]}}}