PHYS4ENTRY
Planetary Entry Integrated Models
| Coordinatore |
Organization address
address: Piazza Umberto I 1 contact info |
| Nazionalità Coordinatore | Non specificata |
| Sito del progetto | http://users.ba.cnr.it/imip/cscpal38/phys4entry/index.html |
| Totale costo | 2˙791˙134 € |
| EC contributo | 19˙615 € |
| Programma | FP7-SPACE
Specific Programme "Cooperation": Space |
| Anno di inizio | 2010 |
| Periodo (anno-mese-giorno) | 2010-05-01 - 2014-04-30 |
Partecipanti
| # | ||||
|---|---|---|---|---|
| 1 |
UNIVERSITA DEGLI STUDI DI BARI ALDO MORO
Organization address
address: Piazza Umberto I 1 contact info |
IT (BARI) | coordinator | 248˙300.00 |
| 2 |
CONSIGLIO NAZIONALE DELLE RICERCHE
Organization address
address: Piazzale Aldo Moro 7 contact info |
IT (ROMA) | participant | 300˙000.00 |
| 3 |
CENTRO ITALIANO RICERCHE AEROSPAZIALI SCPA
Organization address
address: Via Maiorise 1 contact info |
IT (CAPUA - CASERTA) | participant | 199˙977.00 |
| 4 |
INSTITUT VON KARMAN DE DYNAMIQUE DES FLUIDES
Organization address
address: CHAUSSEE DE WATERLOO 72 contact info |
BE (RHODE SAINT GENESE) | participant | 194˙580.00 |
| 5 |
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Organization address
address: Rue Michel -Ange 3 contact info |
FR (PARIS) | participant | 180˙000.00 |
| 6 |
UNIVERSITY COLLEGE LONDON
Organization address
address: GOWER STREET contact info |
UK (LONDON) | participant | 174˙000.00 |
| 7 |
UNIVERSITA DEGLI STUDI DI PERUGIA
Organization address
address: PIAZZA DELL' UNIVERSITA 1 contact info |
IT (PERUGIA) | participant | 165˙000.00 |
| 8 |
UNIVERSITAT DE BARCELONA
Organization address
address: GRAN VIA DE LES CORTS CATALANES 585 contact info |
ES (BARCELONA) | participant | 150˙000.00 |
| 9 |
Nome Ente NON disponibile
Organization address
address: PLACE JEAN METTE 1 contact info |
FR (Pessac) | participant | 101˙176.00 |
| 10 |
A. ISHLINSKY INSTITUTE FOR PROBLEMS IN MECHANICS RUSSIAN ACADEMY OF SCIENCE*IPMECH RAS
Organization address
address: PROSPEKT VERNADSKOGO 101 - Block 1 contact info |
RU (MOSCOW) | participant | 99˙000.00 |
| 11 |
POLITECHNIKA POZNANSKA
Organization address
address: PL MARII SKLODOWSKIEJ CURIE 5 contact info |
PL (POZNAN) | participant | 50˙000.00 |
| 12 |
POLITECNICO DI TORINO
Organization address
address: Corso Duca degli Abruzzi 24 contact info |
IT (TORINO) | participant | 50˙000.00 |
| 13 |
SOFTWARE ENGINEERING RESEARCH & PRACTICES SRL - SER & PRACTICES SRL
Organization address
address: VIA ORABONA 4 contact info |
IT (BARI) | participant | 49˙500.00 |
Mappa
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Obiettivo del progetto (Objective)
'One of the major technological challenges associated with the access to planetary surfaces is the entry of the space vehicle in the planetary atmospheres at superorbital speeds. The problem is the very large heat released to the vehicle surface by the surrounding gas either as convective heating or as radiation. Optimization of the thermal shield design can have a profound impact on the overall mission mass, volume (and therefore energy and cost) budgets. However, a poor knowledge of the physics of hypersonic entry is the limiting factor. Uncertainties increase with the entry speed, in particular as radiation becomes a considerable contribution to the overall heat load. Significant advance can only be achieved when the uncertainties in the physical modelling have been considerably reduced. The main goal of this study is, therefore, a thorough analysis of the physics behind space vehicle entry into planetary atmospheres and an improvement of crucial elements of the modelling that allows reliable predictions of flight conditions. This study is therefore concerned with the development of advanced chemico-physical and plasma models of hypersonic entry flows. Advanced models mean the description of the nonequilibrium chemical kinetics of the high temperature medium on the basis of a state-to-state approach. This approach, in turn, calls for a microscopic description of the elementary processes that play a role in the high temperature reactive gas mixtures surrounding the space vehicles during the entry phase. The predictive capabilities of the theoretical models will be assessed against well defined experimental measurements and their impact on the overall heat flux to the surface will be estimated by Computational Fluid Dynamics simulations of realistic ground and flight tests.'
Introduzione (Teaser)
Despite being an integral aspect of planetary exploration missions, the entry of spacecraft into planets' atmospheres remains poorly understood. To simulate the heat induced as a spacecraft plunges into a planet's atmosphere, EU-funded scientists have developed theoretical models and implemented a virtual wind tunnel.
Descrizione progetto (Article)
Each planet and moon in our solar system has different characteristics and presents different challenges to the entry and descent stage. Differences in atmospheric density features all play a part in safely approaching the surface. And without a successful landing, there can be no robotic mission even if the spacecraft succeeds in reaching the target planet.
The aim of the EU-funded 'Planetary entry integrated models' (http://users.ba.cnr.it/imip/cscpal38/phys4entry/ (PHYS4ENTRY)) project was to study the physical processes that play a role in the supersonic entry. When a spacecraft reaches the atmosphere, a shock wave is formed ahead of the nose, heating the gas in this region to a very high temperature. As it plunges deeper into the atmosphere, the spacecraft is heated by the surrounding atmosphere.
PHYS4ENTRY scientists developed theoretical models to describe elementary processes taking place in the high-temperature mixtures of planetary atmospheres (Earth, Mars, Jupiter) . Electron-molecule collisions, atom-molecule and molecule-molecule gas-phase collisions, atom-molecule surface interactions and photon-induced processes were included in investigations of the expanding entry flow.
Their impact of the overall heat flux on the spacecraft surface was estimated with computational fluid dynamics simulations. The ability of theoretical models to predict the non-equilibrium kinetics of the high-temperature mixture was assessed against experimental measurements. The expanding flow conditions were examined in the induction coupled plasma wind tunnel of the von Karman Institute for Fluid Dynamics in Belgium.
The http://users.ba.cnr.it/imip/cscpal38/phys4entry/database.html (PHYS4ENTRY database) includes rates of elementary processes and physical properties of species relevant to (re-)entry into the atmospheres of Earth, Mars and Jupiter. Publicly available through the project website, it is expected to have a significant impact on modelling efforts in (re-)entry aerothermodynamics.
Through a detailed analysis of the physical processes taking place during a spacecraft's entry into planetary atmospheres, PHYS4ENTRY scientists improved crucial elements of modelling flight conditions. Their findings will contribute to more efficient heat shield designs with profound impact on the success of planetary missions.