TandEM: Titan and Enceladus mission (2009)
Coustenis, A., Atreya, S. K., Balint, T., Brown, R. H., Dougherty, M. K., Ferri, F., ...
TandEM was proposed as an L-class (large) mission in response to ESA’s Cosmic Vision 2015–2025 Call, and accepted for further studies, with the goal of exploring Titan and Enceladus. The mission...
Triple F—a comet nucleus sample return mission (2009)
Küppers, Michael, Keller, H. U., Kührt, E., A’Hearn, M. F., Altwegg, K., Bertrand, R., ...
The Triple F (Fresh From the Fridge) mission, a Comet Nucleus Sample Return, has been proposed to ESA’s Cosmic Vision program. A sample return from a comet enables us to reach the ultimate goal of...
A small mission for in situ exploration of a primitive binary near-Earth asteroid (2009)
Ball, A.J., Ulamec, S., Dachwald, B., Price, M.E., Nadalini, R., Luethi, B., ...
Triple F - A Comet Nucleus Sample Return Mission (2008)
Küppers, Michael, Keller, Horst Uwe, Kührt, Ekkehard, A'Hearn, Michael, Altwegg, Kathrin, Bertrand, R., ...
The Triple F (Fresh From the Fridge) mission, a Comet Nucleus Sample Return, has been proposed to ESA’s Cosmic Vision program. A sample return from a comet enables us to reach the ultimate goal of...
TandEM: Titan and Enceladus mission (2008)
Coustenis, A., Atreya, S. K., Balint, T., Brown, R. H., Dougherty, M. K., Ferri, F., ...
54 pages, 8 figures.-- In press.
Hagermann, A., Towner, M.C., Rosenberg, P.D., Garry, J.R.C., Svedhem, H., Leese, M.R., ...
The Huygens probe descended through Titan's atmosphere in January 2005. On board was the Surface Science Package (SSP), a set of nine sensors, which included a speed-of-sound sensor. We present a...
A small mission for in situ exploration of a primitive binary near-Earth asteroid (2008)
Ball, A.J., Ulamec, S., Dachwald, B., Price, M.E., Nadalini, R., Luethi, B., ...
Triple F - A Comet Nucleus Sample Return Mission (2008)
Küppers, M., Keller, H.U., Kührt, E., A'Hearn, M.F., Altwegg, K., Bertrand, R., ...
Triple F-a comet nucleus sample return mission (2008)
Küppers, M., Keller, H. U., Kührt, E., A'Hearn, M. F., Altwegg, K., Bertrand, R., ...
Speed of sound measurements and the methane abundance in Titan's atmosphere (2007)
Hagermann, A., Rosenberg, P. D., Towner, M. C., Garry, J. R. C., Svedhem, H., Leese, M. R., ...
Aboard the Huygens probe, which descended through Titan's atmosphere in January 2005, was the Surface Science Package (SSP), a set of 9 sensors, including a speed-of-sound sensor. We present the...
Wright, I.P., Barber, S.J., Morgan, G.H., Morse, A.D., Sheridan, S., Andrews, D.J., ...
A fundamental goal of cometary studies is to determine the exact relationship between these bodies and the Solar System – the question(s) can be summarised as follows: did comets originate during...
Hathi, B., Daniell, P. M., Banaszkiewicz, M., Hagermann, A., Leese, M. R., Zarnecki, J. C.
This paper outlines the method of measurement and analysis of the thermal conductivity instrument (THP) that has successfully returned measurements from the atmosphere of Saturn’s moon Titan during...
MUPUS – a Thermal and Mechanical Properties Probe for the Rosetta Lander Philae (2007)
Spohn, T., Seiferlin, K., Hagermann, A., Knollenberg, J., Ball, A.J., Banaszkiewicz, M., ...
MUPUS, the multi purpose sensor package onboard the Rosetta lander Philae, will measure the energy balance and the physical parameters in the near-surface layers – up to about 30 cm depth- of the...
Towner, M.C., Garry, J.R.C., Lorenz, R.D., Hagermann, A., Hathi, B., Svedhem, H., ...
We present the results from the first sonar to be deployed outside of Earth, and the first active acoustic instrument on Titan, onboard the Huygens probe, and the implications of its data for the...
Virial treatment of the speed of sound in cold, dense atmospheres and application to Titan (2006)
The speed of sound in a gas can be used to identify its composition, as has been done on the Earth. We show that, unlike in terrestrial applications, the third virial coefficient cannot be neglected...
Hagermann, A., Ball, A.J., Hathi, B., Leese, M.R., Lorenz, R.D., Rosenberg, P.D., ...
With Huygens’ descent into Titan’s atmosphere drawing nearer, the composition and state of Titan’s surface remained largely unknown. The idea of a global ocean on Titan has become less popular...
Concepts for a low-cost Mars micro mission (2006)
Walker, R. J., Ball, A. J., Price, M. E., Sims, M. R., Taylor, F. W., Wells, N. S., ...
This paper summarises three novel micro-mission concepts for the low-cost exploration of the Martian system. These concepts have been studied under national funding with the aim of defining highly...
Towner, M. C., Garry, J. R. C., Svedhem, H., Hagermann, A., Clark, B. C., Lorenz, R. D., ...
We present analysis of the results from the Huygens acoustic sounder instrument. The sounder sees a relatively smooth terrain, with specular reflectance characteristics.
In situ measurements of the physical characteristics of Titan's environment (2005)
Fulchignoni, M., Ferri, F., Angrilli, F., Ball, A.J., Bar-Nun, A., Barucci, M.A., ...
On the basis of previous ground-based and fly-by information, we knew that Titan's atmosphere was mainly nitrogen, with some methane, but its temperature and pressure profiles were poorly constrained...
Hagermann, A., Zarnecki, J.C., Towner, M.C., Rosenberg, P.D., Lorenz, M.C., Leese, R.D., ...
We present a method for inferring the relative molar abundance of constituents of a liquid mixture, in this case methane, ethane, nitrogen and argon, from a measurement of a set of physical...
Space weathering: Laboratory analyses and in-situ instrumentation (2005)
Bentley, M.S., Ball, A.J., Dyar, M.D., Pieters, C.M., Wright, I.P., Zarnecki, J.C.
Simulations of space weathering using laser irradiation are exploited to study the formation of sub-microscopic iron. A variety of magnetic techniques are evaluated to characterise this iron and are...
The Beagle 2 environmental sensors: science goals and instrument description (2004)
Towner, M.C., Patel, M.R., Ringrose, T.J., Zarnecki, J.C., Pullan, D., Sims, M.R., ...
A suite of instruments on the Beagle 2 Mars lander was designed and built in order to investigate the environmental conditions at the landing site. The sensor suite was capable of measuring air...
Fulchignoni, M., Aboudan, A., Angrilli, F., Antonello, M., Bastianello, S., Bettanini, C., ...
We developed a series of balloon experiments parachuting a 1:1 scale mock-up of the Huygens probe from an altitude just over 30 km to simulate at planetary scale the final part of the descent of the...
A miniature UV-VIS spectrometer for the surface of Mars (2004)
Patel, M. R., Towner, M. C., Zarnecki, J. C., Leese, M. R., Davies, A., Husbands, A.
A miniature spectrometer is in the process of development for a future Mars mission, to measure the UV-VIS spectrum encountered at the martian surface. With an intended mass of ~100 g, the...
A close encounter with a terrestrial dust devil (2004)
Towner, M. C., Ringrose, T. J., Patel, M. R, Balme, M., Metzger, S. M., Greeley, R., ...
We report on an extremely well characterised encounter with a terrestrial dust devil, and its comparison with martian dust devils.
Convective vortices on Mars: a reanalysis of Viking Lander 2 meteorological data, sols 1–60 (2003)
Ringrose, T.J., Towner, M.C., Zarnecki, J.C.
Dust devil data from Mars is limited by a lack of data relating to diurnal dust devil behaviour. Previous work looking at the Viking Lander meteorological data highlighted seasonal changes in...
Patel, M. R., Bérces, A., Kolb, C., Lammer, H., Rettberg, P., Zarnecki, J. C., ...
The issue of the variation of the surface ultraviolet (UV) environment on Mars was investigated with particular emphasis being placed on the interpretation of data in a biological context. A UV model...
Analysis of entry accelerometer data: A case study of Mars Pathfinder (2003)
Withers, Paul, Towner, M.C., Hathi, B., Zarnecki, J.C.
Accelerometers are regularly flown on atmosphere-entering spacecraft. Using their measurements, the spacecraft trajectory and the vertical structure of density, pressure, and temperature in the...
The Beagle 2 environmental sensors: intended measurements and scientific goals (2003)
Towner, M. C., Ringrose, T. J.im, Patel, M. R., Pullan, D., Sims, M. R., Haapanala, S., ...
The Beagle 2 lander, due for arrival on Mars in December 2003, carries an Environmental Sensors Suite to monitor the local meteorology and carry out simple dust and oxidant measurements. The suite is...
Ultraviolet radiation on the surface of Mars and the Beagle 2 UV sensor (2002)
Patel, M.R., Zarnecki, J.C., Catling, D.C.
In this paper a simple radiative transfer model for the transmission of UV to the surface of Mars is presented for the wavelength range 190–410 nm. The model accounts for the variable presence of...
Estimation of the dust flux near Mercury (2002)
Müller, M., Green, S.F., McBride, Neil, Koschny, D., Zarnecki, J.C., Bentley, M.S.
In this paper, we consider the dust flux in the vicinity of Mercury due to interplanetary particles using Divine's five population model (J. Geophys. Res. 98(E9) (1993) 17029). The average accretion...
Huygens' surface science package (2002)
Zarnecki, J.C., Leese, M.R., Garry, J.R.C., Ghafoor, N., Hathi, B.
The design and performance of the Surface Science Package (SSP) on the Huygens probe are discussed. This instrument consists of nine separate sensors that are designed to measure a wide range of...
Characterisation of the UV environment of the Beagle 2 landing site (2002)
A study of the UV environment of the Beagle 2 landing site has been carried out. An instrument to measure the UV flux is present on the lander, and this work serves to aid in the interpretation of...
Wind-driven surface waves on Titan (2000)
Ghafoor, N.A-L., Zarnecki, J.C., Challenor, P., Srokosz, M.A.
Garry, J.R.C., Towner, M.C., Ball, A.J., Zarnecki, J.C., Marcou, G.
The dynamic behaviour of projectiles impacting planetary surfaces can be measured to derive mechanical properties of the target material. Several such dynamic penetrometers will be used on Mars, the...
Garry, J.R.C., Towner, M.C., Ball, A.J., Zarnecki, J.C., Marcou, G.
The dynamic behaviour of projectiles impacting planetary surfaces can be measured to derive mechanical properties of the target material. Several such dynamic penetrometers will be used on Mars, the...