Rosetta Lander (“Philae”) Investigations

Boehnhardt, H.; Ulamec, S.; Biele, Jens; Feuerbacher, B.; Gaudon, Philippe; Hemmerich, Peter; Kletzkine, P.; Moura, D.; Mugnuolo, R.; Nietner, G.; Pätz, B.; Scheuerle, H.; Szegö, K.; Wittmann, K.; team, Philae; Klingelhöfer, G.; Brückner, J.; d’Uston, C.; Gellert, R.; Rieder, R.; López, J. Gironés; Lamy, Philippe; Langevin, Y.; Soufflot, A.; Berthé, Michel; Borg, J.; Poulet, F.; Goesmann, Fred; Szopa, Cyril; Raulin, F.; Sternberg, R.; Israël, G.; Meierhenrich, Uwe J.; Thiemann, Wolfram; Muñoz-Caro, G.; Spohn, Tilman; Seiferlin, K.; Hagermann, A.; Knollenberg, J.; Ball, Andrew; Breuer, D.; Banaszkiewicz, M.; Benkhoff, J.; Gadomski, S.; Gregorczyk, W.; Grygorczuk, J.; Hlond, M.; Kargl, Günter; Kömle, Norbert I.; Kossacki, Konrad J.; Krasowski, J.; Marczewski, Wojciech; Zarnecki, J. C.; Morse, A. D.; Morgan, G. H.; Andrews, Daniel; Barber, S. J.; Leese, M. R.; Sheridan, S.; Wright, I. P.; Pillinger, C. T.; Mottola, S.; Arnold, Gabriele; Grothues, H.-G.; Jaumann, R.; Michaelis, H.; Neukum, G.; Bibring, Jean‐Pierre; Auster, H. U.; Berghofer, G.; Remizov, A. P.; Roll, R.; Fornaçon, K.‐H.; Glaßmeier, Karl‐Heinz; Haerendel, G.; Hejja, I.; Kührt, Ekkehard; Magnes, W.; Moehlmann, D.; Motschmann, U.; Richter, Ingo; Rosenbauer, H.; Russell, C. T.; Rustenbach, J.; Sauer, K.; Schwingenschuh, K.; Szemerey, I.; Waesch, R.; Zazzera, F. Bernelli; Bologna, P.; Dainese, Carlotta; Finzi, A. Ercoli; Espinasse, S.; Magnani, Piergiovanni; Malnati, F.; Olivieri, A.; Re, E.; Seidensticker, K. J.; Möhlmann, D.; Apáthy, I.; Schmidt, W.; Thiel, K.; Arnold, W.; Fischer, Hans-Herbert; Kretschmer, M.; Péter, A.; Trautner, R.; Schieke, S.

doi:10.1007/978-0-387-77518-0_19

Cited by 6 publications

(5 citation statements)

References 127 publications

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“…As discussed in section 4.2, certain accretional histories such as gravitational instabilities and late accretion can potentially form large ADRM zones. The resulting magnetic fields may be detectable from a magnetometer such as the one onboard the Philae lander, which will make measurements ∼1 m above the comet's surface [ Auster et al , 2007; Bibring et al , 2007; Glassmeier et al , 2007].…”

Section: Discussionmentioning

confidence: 99%

Detrital remanent magnetization in the solar nebula

Fu¹,

Weiss²

2012

J. Geophys. Res.

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[1] We introduce the theoretical basis of a new form of remanent magnetization that likely formed on primitive bodies in the solar system. Accretional detrital remanent magnetization (ADRM) operates via "compass needle"-type alignment of ferromagnetic solids with locally uniform background fields in the solar nebula. Accretion of coherently aligned magnetic particles should have formed aggregates up to centimeters in size with significant net magnetic moment. We quantify several processes that constrain the likelihood of ADRM formation, finding that rotational gas damping and background field intensities expected for the solar nebula are sufficient to mutually align magnetic particles with diameters between $30 mm and several cm. The lower bound is dictated by Brownian motion or radiative torque while the upper bound is set by aerodynamic torque on non-spherical particles. Processes important for interstellar dust dynamics such as Larmor-type precession and Purcell torque are less significant in the solar nebula. ADRM can be potentially observed as zones of coherent magnetization in primitive chondrites and may be detected by spacecraft magnetic field observations on the surfaces of small bodies. Observational identification and characterization of ADRM would constrain the strength and geometry of magnetic fields in the early solar system, the accretion process of sub-meter sized objects, the formation regions of chondrite parent bodies, and the alteration history of chondritic components.

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Section: Discussionmentioning

confidence: 99%

Detrital remanent magnetization in the solar nebula

Fu¹,

Weiss²

2012

J. Geophys. Res.

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“…It was launched in March 2004 and entered 67P/Churiu in August 2014. Move-Gerasimenko orbited the asteroid and subsequently released the Philae lander in November [12]. The lander uses electromagnetic damping buffers to absorb landing impact energy.…”

Section: Current Research Status and Trendmentioning

confidence: 99%

“…At present, space powers such as the United States, Europe, and Japan have achieved a series of results in asteroid detection [3][4][5][6][7]. From the perspective of the development of deep space exploration technology abroad, the detection of planets and small celestial bodies mainly adopts methods such as short-range leap, surround detection, and surface landing attachment survey [8][9][10][11][12][13][14][15][16][17]. Among them, the attachment detection method is the most direct, and the detection efficiency is high, but the technical difficulty and risk are also high.…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Research of a New Type of Asteroid Anchoring System

Wang

Wansong²,

Long³

et al. 2021

International Journal of Aerospace Engineering

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Asteroid detection is of great significance to the study of the formation of the solar system and the origin of life. However, there are many types of asteroids, and they are far away from the earth, and the understanding of their various characteristics is not clear, which brings huge technical challenges to the landing and attachment of star catalogs. At present, the world is mainly based on surround, overflight, and short-term contact detection, and long-term attachment detection has not yet been realized. In order to solve the long-term attachment detection requirements of asteroids, focusing on the geological characteristics of various types of stars, this paper proposes a new type of asteroid attachment mechanism based on the beetle bionic theory, which can realize intelligent and flexible attachment and has strong adaptability. Around this design, this paper analyzes the mechanism of adhesion and realizes the adaptive matching of unascertained terrain landing point adhesion. On this basis, a prototype of the asteroid landing attachment mechanism was developed and verified by experiments. The experiment proved that the mechanism has strong multiterrain matching ability and can obtain an adhesion force of not less than 36 N on ordinary concrete ground.

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“…After a ten-year journey across the Solar System and many complicated manoeuvres, the Rosetta spacecraft [9] with the Philae lander [6,5,7] attached to it smoothly approached a small celestial body of 2-4 km in diameter, comet 67P/Churyumov-Gerasimenko. The spacecraft executed additional fine manoeuvres to fly a multitude of low and high altitude orbits around the comet, mapping its shape and surface in detail never seen before, and continues to observe it for more than two years.…”

Section: Introductionmentioning

confidence: 99%

Rotational Motion of the Spacecraft Philae During Landing on Comet 67P/Churyumov–Gerasimenko

Baranyai

Várkonyi

Balázs

2017

Journal of Spacecraft and Rockets

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This paper presents a partial reconstruction of the rotational dynamics of the Philae spacecraft upon landing on comet 67P/Churyumov-Gerasimenko as part of ESA's Rosetta mission. We analyze the motion and the events triggered by the failure to fix the spacecraft to the comet surface at the time of the first touchdown. Dynamic trajectories obtained by numerical simulation of a 7 degreeof-freedom mechanical model of the spacecraft are fitted to directions of incoming solar radiation inferred from in-situ measurements of the electric power provided by the solar panels. The results include a lower bound of the angular velocity of the lander immediately after its first touchdown. Our study also gives insight into the effect of the programmed turn-off of the stabilizing gyroscope after touchdown; the important dynamical consequences of a small collision during Philae's journey; and the probability that a similar landing scenario harms the operability of this type of spacecraft.

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Rosetta Lander (“Philae”) Investigations

Cited by 6 publications

References 127 publications

Detrital remanent magnetization in the solar nebula

Detrital remanent magnetization in the solar nebula

Design and Experimental Research of a New Type of Asteroid Anchoring System

Rotational Motion of the Spacecraft Philae During Landing on Comet 67P/Churyumov–Gerasimenko

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