scholarly journals Assessment of Human Hemodynamics under Hyper- and Microgravity: Results of two Aachen University Parabolic Flight Experiments

10.14311/958 ◽  
2007 ◽  
Vol 47 (4-5) ◽  
Author(s):  
N. Blanik ◽  
M. Hülsbusch ◽  
M. Herzog ◽  
C. R. Blazek
Keyword(s):  
Parabolic Flight ◽  
Lower Extremities ◽  
Joint Project ◽  
Fluid Shifts ◽  
Optoelectronic Sensor ◽  
German Aerospace ◽  
Micro Gravity

Astronauts complain about fluid shifts from their lower extremities to their head caused by weightlessness during their flight into space. For a study of this phenomenon, RWTH Aachen University and Charité University Berlin participated in a joint project on two parabolic flight campaigns of the German Aerospace Centre (DLR) in September 2005 and June 2006. During these campaigns, the characteristics of the rapid fluid shifts during hyper- and micro gravity were measured by a combination of PPG and PPGI optoelectronic sensor concepts. 

scholarly journals Process Development for Integrated and Distributed Rotorcraft Design

Aerospace ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 23
Author(s):  
Peter Weiand ◽  
Michel Buchwald ◽  
Dominik Schwinn
Keyword(s):  
Finite Element ◽  
Degrees Of Freedom ◽  
Process Development ◽  
Design Environment ◽  
Aerospace Medicine ◽  
System Architectures ◽  
Joint Project ◽  
Element Approach ◽  
German Aerospace ◽  
Simulation And Evaluation

The German Aerospace Center is currently developing a new design environment for rotorcraft, which combines sizing, simulation and evaluation tasks into one toolbox. The complete environment applies distributed computation on the servers of the various institutes involved. A uniform data model with a collaboration and interface software, developed by DLR and open source, are used for exchange and networking. The tools used apply blade element methods in connection with full six degrees of freedom trim, panel methods for aerodynamic loads, different empirical models for sizing, engine properties and component mass estimation and finite element methods for structural design. A special feature is the integration of a higher fidelity overall simulation tool directly into the sizing loop. The paper describes the use of the several tools for the phases of conceptual and preliminary design. A design study is presented demonstrating the sensitivity of the process for a variation of the input parameters exhibiting a broad range for trade-off studies. The possibility to continue for analyzing and sizing of the structural properties is also demonstrated by applying a finite element approach for specific load cases. These features highlight the core of the new design environment and enable the development of goal-oriented design processes for research especially of new and unconventional rotorcraft configurations. The work presented in this paper was conducted throughout the DLR internal project, namely the Technologies for Rotorcraft in Integrated and Advanced Design (TRIAD). TRIAD is a joint project of the institutes of Flight Systems, the institute of Aerodynamics and Flow Technology, the institute of Structures and Design, the System Architectures in Aeronautics and Institute of Aerospace Medicine and receives basic founding.

Art in the Space Age: Exploring the Relationship between Outer Space and Earth Space

Leonardo ◽  
2004 ◽  
Vol 37 (4) ◽  
pp. 273-276
Author(s):  
Takuro Osaka
Keyword(s):  
International Space Station ◽  
Outer Space ◽  
Parabolic Flight ◽  
Space Station ◽  
International Space ◽  
Earth Space ◽  
Space Art ◽  
Effective Use ◽  
The Relationship ◽  
Micro Gravity

The author's interest in Space Art has taken several forms, including project proposals for the effective use of the International Space Station, research on the theme of the possibility of art in outer space, and conducting interviews with astronauts. He has also performed experiments in a micro-gravity environment generated by parabolic flight. This article provides an account of his plans and the results of these experiments.

scholarly journals Temporal/spatial cognitive experiments under micro-gravity produced by parabolic flight

2019 ◽  
Vol 83 (0) ◽  
pp. 3C-046-3C-046
Author(s):  
Ikuma Adachi ◽  
Masahiro Terada ◽  
Satoshi Hirata ◽  
Mana Taguchi ◽  
Masaki Tomonaga ◽  
...  
Keyword(s):  
Parabolic Flight ◽  
Micro Gravity

An Overview of the Stratospheric Observatory for Infrared Astronomy Since Full Operation Capability

2018 ◽  
Vol 07 (04) ◽  
pp. 1840012 ◽  
Author(s):  
Kimberly Ennico ◽  
Eric E. Becklin ◽  
Jeanette Le ◽  
Naseem Rangwala ◽  
William T. Reach ◽  
...  
Keyword(s):  
Infrared Astronomy ◽  
Joint Project ◽  
New Science ◽  
Current State ◽  
Science Operations ◽  
Wide Range ◽  
Scientific Results ◽  
Development Approach ◽  
German Aerospace ◽  
Full Operation

The Stratospheric Observatory for Infrared Astronomy (SOFIA), a joint project between NASA and the German Aerospace Center DLR, provides access to observations of the infrared and sub-millimeter universe. As its development timeline is unique compared to all other NASA astrophysics missions, a milestone called the Full Operation Capability (FOC) was defined to identify the start of science operations. SOFIA reached this in February 2014. With a wide range of imagers, spectrometers and a new polarimeter, SOFIA provides unique scientific results that cannot be obtained with a ground-based facility and any spacecraft expected in the next decade. The airborne platform has continued to mature its mission systems as part of a planned spiral development approach, particularly with upgradable instrumentation that opens up new science directions for the Observatory. A third generation instrument is planned for commissioning in 2019. This paper summarizes the current state of the Observatory with emphasis on the science and instrumentation updates since FOC.

VOILA on LUVMI-X: A LIBS Instrument for the Detection of Volatiles at the Lunar South Pole

2021 ◽  
Author(s):  
David Vogt ◽  
Susanne Schröder ◽  
Heinz-Wilhelm Hübers ◽  
Lutz Richter ◽  
Michael Deiml ◽  
...  
Keyword(s):  
Lunar Surface ◽  
Spectral Lines ◽  
South Pole ◽  
Joint Project ◽  
Water Ice ◽  
Breakdown Spectroscopy ◽  
Laboratory Setup ◽  
Laser Induced Breakdown ◽  
Lunar South Pole ◽  
German Aerospace

<p>The lunar south pole is of great interest for upcoming lunar exploration endeavors due to the detection of large reservoirs of water ice in the pole’s permanently shadowed regions [1], which could be utilized to reduce the costs of a sustained presence on the Moon [2]. A strong focus of future robotic exploration missions will therefore be on the detection of water and related volatiles. For this purpose, the project Lunar Volatiles Mobile Instrumentation – Extended (LUVMI-X) is developing an initial system design as well as payload and mobility breadboards for a small, lightweight rover [3]. One of the proposed payloads is the Volatiles Identification by Laser Analysis instrument (VOILA), which uses laser-induced breakdown spectroscopy (LIBS) to analyze the elemental composition of the lunar surface with an emphasis on the detection of hydrogen for the inference of the presence of water. VOILA is a joint project by OHB System AG, Laser Zentrum Hannover e.V., and the German Aerospace Center’s Institute of Optical Sensor Systems. It is designed to analyze targets on the lunar surface in front of the LUVMI-X rover at a variable focus between 300 mm to 500 mm, allowing for precise measurements under various measurement conditions. The spectrometer covers the wavelength range from 350 nm to 790 nm, which includes the hydrogen line at 656.3 nm as well as spectral lines of most major rock-forming elements. The breadboard laboratory setup for VOILA was recently completed and first measurements of Moon-relevant samples have been made. Here, we will show the results of these measurements and will discuss their meaning for the further improvement of the instrument design and for its potential use as a volatile-scouting instrument at the lunar south pole.</p><p>[1] Li S. et al. (2018) PNAS, 36, 8907–8912. [2] Anand M. et al. (2012) Planet. Space Sci., 74, 42–48. [3] Gancet J. et al. (2019) ASTRA 2019. [4] Knight A. K. et al. (2000) Appl. Spectrosc., 54, 331–340. [5] Maurice S. et al. (2012) Space Sci. Rev., 170, 95–166. [6] Wiens R. C. et al. (2012) Space Sci. Rev., 170, 167–227. [7] Wiens R. C. et al. (2017) Spectroscopy, 32. [8] Ren X. et al. (2018) EPSC 2018, Abstract EPSC2018-759. [9] Laxmiprasad A. S. et al. (2013) Adv. Space Res., 52, 332–341. [10] Lasue J. et al. (2012) J. Geophys. Res., 117, E1.</p>

Micro-gravity experiment of a space robotic arm using parabolic flight

2004 ◽  
Vol 18 (3) ◽  
pp. 247-267 ◽  
Author(s):  
Hirokata Sawada ◽  
Kyoichi Ui ◽  
Makoto Mori ◽  
Hiroshi Yamamoto ◽  
Ryoichi Hayashi ◽  
...  
Keyword(s):  
Parabolic Flight ◽  
Robotic Arm ◽  
Micro Gravity

scholarly journals Convective dynamics of traveling autocatalytic fronts in a modulated gravity field

2014 ◽  
Vol 16 (47) ◽  
pp. 26279-26287 ◽  
Author(s):  
Dezső Horváth ◽  
Marcello A. Budroni ◽  
Péter Bába ◽  
Laurence Rongy ◽  
Anne De Wit ◽  
...  
Keyword(s):  
Gravity Field ◽  
Reaction Front ◽  
Parabolic Flight ◽  
Liquid Interface ◽  
Marangoni Flow ◽  
Air Liquid Interface ◽  
Micro Gravity

Modulation of the gravity field, spanning from the hyper-gravity to micro-gravity of a parabolic flight, reveals the contribution of Marangoni flow in a propagating reaction front with an open air–liquid interface.

Investigation of Gravity Effects on Electrically Driven Liquid Film Flow Boiling: A Micro-Gravity Flight Campaign in Preparation of ISS Experiment

2020 ◽  
Author(s):  
Alexander J. Castaneda ◽  
Nathaniel J. O’Connor ◽  
Jamal Yagoobi
Keyword(s):  
Liquid Film ◽  
Heat Transport ◽  
Film Flow ◽  
Flow Boiling ◽  
Parabolic Flight ◽  
Space Station ◽  
Two Phase ◽  
Ability To Act ◽  
Liquid Film Flow ◽  
Micro Gravity

Abstract The ongoing development of modern electronic systems leads to smaller, more powerful devices that are expected to operate in complex environments. Due to this, advanced thermal management technologies are required to meet the growing demand, especially in space where two-phase thermal systems are limited by the absence of gravity. Electrohydrodynamic (EHD) and dielectrophoretic (DEP) forces can be used to sustain stable liquid film boiling in micro-gravity, which is otherwise impractical due to the lack of a required buoyancy force to initiate bubble departure. EHD and DEP are phenomena that are represented by the interaction between electric fields and fluid flow. The DEP force especially is characterized by the unique ability to act on liquid/vapor interfaces due to a high gradient of electrical permittivity, allowing for two phase operation. This study investigates the effect of EHD conduction pumping coupled with DEP vapor extraction on liquid film flow boiling during a microgravity parabolic flight, and it characterizes the future two-phase microgravity heat transport technology prior to testing on the International Space Station (ISS). The results of this study show that EHD and DEP raise critical heat flux, lower heater surface temperature, and successfully sustain boiling in micro-gravity all at the cost of low power consumption. Additionally, the heat transfer data captured in terrestrial, microgravity, and 1.8 g conditions compare well, indicating that this technology can provide thermal enhancement independent of gravity. This study paves the way for future implementation of EHD-driven two-phase heat transport devices into space and aeronautical electronics applications.

scholarly journals Result of Micro-Gravity Experiment using Parabolic Flight for Tethered Recovery in Tethered Sampling Method

2009 ◽  
Vol 7 (ists26) ◽  
pp. Pk_23-Pk_28
Author(s):  
Saburo MATUNAGA ◽  
Tomio YAMANAKA ◽  
Ken FUJIWARA ◽  
Masaki MAENO ◽  
Junichi NISHIDA ◽  
...  
Keyword(s):  
Sampling Method ◽  
Parabolic Flight ◽  
Micro Gravity
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