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The dynamics of parabolic flight: Flight characteristics and passenger percepts [PDF]

Acta Astronautica, 2008
Flying a parabolic trajectory in an aircraft is one of the few ways to create freefall on Earth, which is important for astronaut training and scientific research. Here we review the physics underlying parabolic flight, explain the resulting flight dynamics, and describe several counterintuitive findings, which we corroborate using experimental data ...
Faisal Karmali, Mark Shelhamer
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A nonlinear controller for parabolic flight

Proceedings of 32nd IEEE Conference on Decision and Control, 2002
The paper deals with the design of a nonlinear controller for asymptotic tracking of a given parabolic trajectory in flight dynamics. The problem here addressed is related to the possibility of maintaining microgravity conditions. Simulation results show the effectiveness of the proposed controller. >
D'Antonio L., MONACO, Salvatore
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Parabolic Flight: Loss of Sense of Orientation

Science, 1979
On the earth, or in level flight, a blindfolded subject being rotated at constant velocity about his recumbent long body axis experiences illusory orbital motion of his body in the opposite direction. By contrast, during comparable rotation in the free-fall phase of parabolic flight, no body motion is perceived and all sense of external orientation may
J R, Lackner, A, Graybiel
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Cardiovascular changes in parabolic flights assessed by ballistocardiography

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013
This paper presents a comparison of the cardiovascular changes observed in microgravity as compared to ground based measurements. The ballistocardiogram (BCG), the electrocardiogram (ECG) and the transthoracic impedance cardiogram (ICG) were recorded on five healthy subjects during the 57th-European Space Agency (ESA) parabolic flight campaign.
Quentin Delière, Pierre-François Migeotte, Xavier Neyt, Irina Funtova, Roman M. Baevsky, Jens Tank, Nathalie Pattyn   +6 more
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Cardiovascular and Valsalva responses during parabolic flight

Journal of Applied Physiology, 1998
We investigated the integrated cardiovascular responses of 15 human subjects to the acute gravitational changes (micro- and hypergravity portions) of parabolic flight. Measurements were made with subjects quietly seated and while subjects performed controlled Valsalva maneuvers.
T T, Schlegel, E W, Benavides, D C, Barker, T E, Brown, D L, Harm, S J, DeSilva, P A, Low   +6 more
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Are aircraft parabolic flights really parabolic?

Acta Astronautica, 2013
Abstract Aircraft parabolic flights provide repetitively short periods of reduced gravity by flying a ballistic trajectory, preceded and followed by periods of acceleration up to 2g. The ballistic part has a shape of an arc of a parabola and is quite commonly referred to as a parabolic flight.
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Graviresponses of Paramecium biaurelia during parabolic flights

Protoplasma, 2006
The thresholds of graviorientation and gravikinesis in Paramecium biaurelia were investigated during the 5th DLR (German Aerospace Center) parabolic-flight campaign at Bordeaux in June 2003. Parabolic flights are a useful tool for the investigation of swimming behaviour in protists at different accelerations. At normal gravity (1 g) and hypergravity (1
Krause, Martin, Bräucker, Richard, Hemmersbach, Ruth   +2 more
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Changes in cerebral oxygenation during parabolic flight

European Journal of Applied Physiology, 2013
Assessing changes in brain activity under extreme conditions like weightlessness is a desirable, but difficult undertaking. Results from previous studies report specific changes in brain activity connected to an increase or decrease in gravity forces.
Schneider, S, Abeln, V, Askew, C D, Vogt, T, Hoffmann, U, Denise, P, Struder, H K   +6 more
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Parabolic flight as a space-flight analogon impacts angiogenesis and lipid metabolism

Life Sciences in Space Research
This study aimed to examine the effects of weightlessness and microgravity, induced by parabolic flight, on specific biomarkers associated with angiogenesis, lipid homeostasis, and cardiovascular diseases, including angiogenin (ANG), angiopoietin-1 (ANGPT-1), angiopoietin-like protein 4 (ANGPTL4), heat shock protein 70 (HSP70), transforming growth ...
Michael Lichtenauer, Vera Paar, Peter Jirak   +2 more
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