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NEOTωIST - An Asteroid Impactor Mission Featuring Sub-spacecraft for Enhanced Mission Capability

Engel, Kilian and Pugliatti, Mattia and Drube, Line and Cano, J. L. and Eggl, S. and Hestroffer, Daniel and Falke, Albert and Johann, Ulrich and Harris, Alan (2016) NEOTωIST - An Asteroid Impactor Mission Featuring Sub-spacecraft for Enhanced Mission Capability. 67th International Astronautical Congress (IAC), 2016-09-26 - 2016-09-30, Guadalajara, Mexico.

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Official URL: https://iafastro.directory/iac/paper/id/34163/summary/

Abstract

Near Earth Object (NEO) deflection for the purpose of planetary defense has become increasingly recognized as a valid and valuable endeavour. NEOTωIST stands for Near-Earth Object Transfer of angular momentum (ω) Spin Test. This describes a demonstration mission intended to develop the capabilities required to execute an effective kinetic impactor NEO deflection mission. The chosen measurement technique and employment of small sub-spacecraft for observation purposes represent a novel approach to achieving the main goals of such a demonstration mission. The approach promises comparatively low cost and features capabilities that are unique and valuable for an operational deflection mission. Most standard deflection demonstration missions propose to quantify momentum transfer from the impactor spacecraft to the target object by measuring a change in its heliocentric orbit. The change is typically so small that it must be performed via radio-science from a second observer spacecraft which rendezvous with the NEO prior to impact. In our case the NEO is struck off-center which changes its spin rate. This rate change, which can be measured from Earth via light curve measurements, allows quantification of the transferred momentum. Using this measurement method the need for an observer spacecraft for the purpose of NEO orbit measurement is eliminated. The second function of the observer spacecraft is the close-up observation of the impact event for improvement of impact effectiveness modelling. The NEOTωIST mission achieves this observation by deploying several small sub-spacecraft from the main impactor spacecraft shortly before impact. These sub-spacecraft allow observation of the impact event from multiple vantage points some of which are unique because their destruction is accepted. At least one sub-spacecraft trajectory is planned such that survival is guaranteed, which enables it to receive observation data from the other spacecraft for delayed transmission to Earth. We present the overall mission concept as well as preliminary design work on the key technical challenges, in particular those associated with the highly dynamic operation of the small sub-spacecraft that are a key feature of the NEOTωIST mission.

Item URL in elib:https://elib.dlr.de/108606/
Document Type:Conference or Workshop Item (Speech)
Title:NEOTωIST - An Asteroid Impactor Mission Featuring Sub-spacecraft for Enhanced Mission Capability
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Engel, Kilianairbus d&s, friedrichshafen, germanyUNSPECIFIEDUNSPECIFIED
Pugliatti, MattiaDepartment of Aerospace Engineering, Delft University of TechnologyUNSPECIFIEDUNSPECIFIED
Drube, LineUNSPECIFIEDhttps://orcid.org/0000-0003-2486-8894UNSPECIFIED
Cano, J. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eggl, S.imcce-observatoire de paris, 75014 paris, franceUNSPECIFIEDUNSPECIFIED
Hestroffer, Danielobservatoire de paris, franceUNSPECIFIEDUNSPECIFIED
Falke, Albertairbus defence and space, friedrichshafen, germanyUNSPECIFIEDUNSPECIFIED
Johann, Ulrichastrium friedrichshafenUNSPECIFIEDUNSPECIFIED
Harris, AlanUNSPECIFIEDhttps://orcid.org/0000-0001-8548-8268UNSPECIFIED
Date:2016
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:NEO, deflection, Kinetic Impactor, planetary defence, sub-spacecraft, small satellite
Event Title:67th International Astronautical Congress (IAC)
Event Location:Guadalajara, Mexico
Event Type:international Conference
Event Start Date:26 September 2016
Event End Date:30 September 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Drube, Line
Deposited On:30 Nov 2016 08:08
Last Modified:24 Apr 2024 20:13

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