Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator
In order to investigate movement of the Ross Ice Shelf in Antarctica, an air-dropped ice penetrator will be employed. Dropping a seismic probe from a helicopter offers several advantages over sending out a conventional crewed mission, such as reduced transit time and access to hard-to-reach location...
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Massachusetts Institute of Technology
2021
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ftmit:oai:dspace.mit.edu:1721.1/139447 2023-06-11T04:05:59+02:00 Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator Poe, Daniel Pekka Hoffman, Jeffrey Massachusetts Institute of Technology. Department of Aeronautics and Astronautics 2021-06-16T13:26:59.252Z application/pdf https://hdl.handle.net/1721.1/139447 unknown Massachusetts Institute of Technology https://hdl.handle.net/1721.1/139447 In Copyright - Educational Use Permitted Copyright MIT http://rightsstatements.org/page/InC-EDU/1.0/ Thesis 2021 ftmit 2023-05-29T08:16:07Z In order to investigate movement of the Ross Ice Shelf in Antarctica, an air-dropped ice penetrator will be employed. Dropping a seismic probe from a helicopter offers several advantages over sending out a conventional crewed mission, such as reduced transit time and access to hard-to-reach locations. However, a new set of problems to be solved arises. The penetrator must fall fast enough to guarantee rigid coupling to the ice shelf, but slow enough to avoid damaging internal components. Aerodynamic analysis is used to select a penetrator geometry, and to suggest a drop altitude of at least 5000 ft (1524 m). Detailed simulations of the impact reveal shock loads up to 566 G from a drop velocity of 42.5 m/s. Finally, the effects of steady wind are analyzed, and point to a maximum recommended wind speed of 7.5 m/s for drop operations. S.M. Thesis Antarc* Antarctica Ice Shelf Ross Ice Shelf DSpace@MIT (Massachusetts Institute of Technology) Ross Ice Shelf |
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DSpace@MIT (Massachusetts Institute of Technology) |
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description |
In order to investigate movement of the Ross Ice Shelf in Antarctica, an air-dropped ice penetrator will be employed. Dropping a seismic probe from a helicopter offers several advantages over sending out a conventional crewed mission, such as reduced transit time and access to hard-to-reach locations. However, a new set of problems to be solved arises. The penetrator must fall fast enough to guarantee rigid coupling to the ice shelf, but slow enough to avoid damaging internal components. Aerodynamic analysis is used to select a penetrator geometry, and to suggest a drop altitude of at least 5000 ft (1524 m). Detailed simulations of the impact reveal shock loads up to 566 G from a drop velocity of 42.5 m/s. Finally, the effects of steady wind are analyzed, and point to a maximum recommended wind speed of 7.5 m/s for drop operations. S.M. |
author2 |
Hoffman, Jeffrey Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
format |
Thesis |
author |
Poe, Daniel Pekka |
spellingShingle |
Poe, Daniel Pekka Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
author_facet |
Poe, Daniel Pekka |
author_sort |
Poe, Daniel Pekka |
title |
Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
title_short |
Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
title_full |
Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
title_fullStr |
Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
title_full_unstemmed |
Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator |
title_sort |
aerodynamics and impact simulation of an air-dropped ice penetrator |
publisher |
Massachusetts Institute of Technology |
publishDate |
2021 |
url |
https://hdl.handle.net/1721.1/139447 |
geographic |
Ross Ice Shelf |
geographic_facet |
Ross Ice Shelf |
genre |
Antarc* Antarctica Ice Shelf Ross Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Ross Ice Shelf |
op_relation |
https://hdl.handle.net/1721.1/139447 |
op_rights |
In Copyright - Educational Use Permitted Copyright MIT http://rightsstatements.org/page/InC-EDU/1.0/ |
_version_ |
1768377700245831680 |