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Surface Science Package (SSP)

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SSP will determine the physical and chemical nature of Titan's surface.

HOW: A suite of eight sensors will make in-situ measurements of the thermal, electrical, acoustic and optical properties of Titan's surface. Sensors will also determine the rate at which the probe decelerates on impact, giving information on the strength and other physical characteristics of the surface. A tilt sensor will provide information on any waves following a liquid impact.

Some RAL activities on SSP:

‘Top-hat' Sensor Assembly

• Top is hard-mounted to probe's instrument platform

• Sensor volume must fill with liquid on landing

• Bottom is connected to fore-dome by bellows to preserve seal on impact.

• Structure to be as light as possible

Thermal Characteristics

• Probe interior -10 to +20 degC

• Outside temperature -180 degC

• Heat leak must be minimised!

• Insulation materials must depressurise on launch and re-pressurise at Titan.

Electronics System Features

• Hot-redundant power supplies

• Redundant data streams – 30 seconds delay between them gives uninterrupted data at surface impact.

• Multiplicity of sensors required innovative design of signal conditioning and processing chain.

 

PI: J C Zarnecki

INSTITUTION: Open University

COLLABORATORS

INSTITUTION

COUNTRY

ROLE

S.F. Green

Open University

UK

Data Analysis

J.A.M. McDonnell

Open University

UK

Data Analysis

J. Delderfield

Rutherford Appleton Laboratory

UK

Sensor Development

A.M. Cruise

University of Birmingham

UK

Data Analysis

P. Challenor

Institute of Ocean Science

UK

Ocean Modelling

J.E. Geake (now deceased)

UMIST

UK

Sensor Development

Hakron Svedham

ESA SSD, ESTEC

NL

Sensor Development

Others from:

ESA SSD ESTEC

NL

Data Analysis

...

SRC, Warsaw

Poland

Sensor Development

...

University Of Paris

France

Data Analyis

...

MMDA, Denver

USA

Data Analysis

...

University of Arizona

USA

Data Analysis

...

University of Arizona

USA

Data Analysis

UK COST: £2,747K

CONTACT FOR PRESS ENQUIRIES: Prof J.C. Zarnecki - 01908 659599

 


Prof. Manuel Grande
Last updated: 21 December 04