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Human-In-The-Loop Controlled Lunar Landing Simulator

Neves, Miguel (2019) Human-In-The-Loop Controlled Lunar Landing Simulator. Master's, Technical University of Munich.

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Abstract

Lunar landers play a critical role in crewed exploration of the Moon. Their specifications are tailored to different mission requirements and objectives. These can include size, propulsion, cargo and crew payload, landing gear, energy systems and system controllers. This thesis presents a Human-In-The-Loop (HITL) controlled lunar lander simulator developed at the German Aerospace Center (DLR) to help analyse the interaction between the piloting astronaut and lunar lander dynamics. A lunar lander dynamic model is designed and parametrized comprising Reaction Control System (RCS) thrusters and a main thruster for landing. A comparison study is carried out for three different ground contact detection models with force calculation. The most suitable model is then implemented to simulate the landing contact forces. A numerical simulation stability analysis is performed, which is enforced by a dynamic mass scaling parameter. Although all lunar landers featured On-board Guidance, Navigation and Control (GNC) systems to autopilot the spacecraft to land on target using fuel optimized strategies, during all six successful Apollo landings, the crew seized control and landed manually. The part of the journey where the astronaut takes manual control of the lunar lander is the primary focus of this thesis. To investigate this, the lunar lander dynamic model is integrated within DLR’s Robotic Motion Simulator (RMS) framework. A suitable washout filter for the simulator motion cueing is parametrized taking in account the low gravity scenario. Furthermore, suitable Human Machine Interface (HMI) devices are incorporated into the DLR RMS for the manual steering of the virtual lunar lander. For this work, representative simulation scenarios are reconstructed, with the Apollo 11 mission data, as well as training scenarios for a lunar landing. This framework was fully embedded into the RMS, and empirically tested to verify the expected functionality for different lunar landing scenarios. Data collected from the pilot sensor measurements, lander path and Quaternion based Washout Filter (QWOF) performance are evaluated and discussed. This work paves the way to meet future challenges in spacecraft design, particularly for GNC validation and astronaut manual flight control training.

Item URL in elib:https://elib.dlr.de/128757/
Document Type:Thesis (Master's)
Title:Human-In-The-Loop Controlled Lunar Landing Simulator
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Neves, MiguelMiguel.Neves (at) dlr.dehttps://orcid.org/0000-0002-0382-983X
Date:15 June 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:85
Status:Accepted
Keywords:Human in the loop, human-in-the-loop lunar lander simulator robotic motion simulator RMS DLR TUM RCI
Institution:Technical University of Munich
Department:Department of Informatics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Space System Dynamics
Deposited By: Neves, Miguel
Deposited On:22 Nov 2019 09:44
Last Modified:22 Nov 2019 09:44

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