the sapienza contribution to the success of the … · the sapienza contribution to the success of...
Post on 18-Feb-2019
216 Views
Preview:
TRANSCRIPT
Marcello Onofri
ASI: Workshop on VEGA – Roma 01-04-2015
THE SAPIENZA CONTRIBUTION TO THE
SUCCESS OF THE VEGA PROJECT
M.Onofri
Corso di Propulsione Spaziale - Laurea
Magistrale in Ingegneria Spaziale,
Università di Roma La Sapienza (IT)
Page 2/6
THE ITALIAN ACTIVITY ON SPACE LAUNCHERS HAS STRONG LINKS TO THE SPACE ACTIVITY AT SAPIENZA UNIVERSITY
• ON 1964 THE ITALIAN ACTIVITIES STARTED WITH THE FIRST LAUNCH OF A SCIENTIFIC SATELLITE FULLY DESIGNED, BUILT AND MANAGED BY A TEAM OF SAPIENZA UNIVERSITY.
• THE BROGLIO TEAM PERFORMED FIVE SUCCESSFUL LAUNCHES AND BECAME WORLD FAMOUS TO BE THE THIRD, AFTER URSS AND USA, TO SHOW A CAPACITY TO HANDLE LAUNCH ACTIVITY, AND PUT SCIENTIFIC SATELLITES IN ORBIT.
• SINCE THAT TIME, SAPIENZA UNIVERSITY HAS BEEN PROVIDING MANY CONTRIBUTIONS TO THE DESIGN OF NEW LAUNCHERS AND OF NEW LAUNCH SITE.
The 60’s: The Team of the S. Marco Project
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 3/6
After the S. Marco Project CARLO BUONGIORNO
became the first DG of ASI:
- Promoted the development of the Italian propulsion industry
- Put in place International Agreements with NASA and
ESA for the Italian participation to the building of the ISS
- Promoted impressive missions like CASSINI-HUYGENS
BUT he never forgot to be first of all a Rocket Scientist, with the
dream of realizing new innovative national launch systems.
On his working desk we saw for the first time the proposals of:
• GENNARINO 1 (after S. Gennaro, who is considered in Naples as Saint
much more powerful than S. Marco and thus more compliant with the
difficulty of building an Italian launcher)
• BETA which later -thanks to ASI/AVIO- became a VEGA ESA Launcher.
Carlo BUONGIORNO and his dream of an Italian launcher:
FROM S. MARCO TO VEGA
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 4/6
The Success of the Vega first 4 flights is
the Success of the Italian Technology and Scientific Capability
VEGA PROJECT is the paradigm of a proper chain between Industry and Academia
University Contributions by Research: • Propulsion and analysis of transient
behaviors of combustion chambers, • Design of composite material structures
and nozzles. • New tools for design • High level analysis of anomalies
Contributions by Education Programs: Master for graduate in STS
Industry • Development of edge technology • Management of complex systems • Independent technical
competence • Increased capability to interact
with international industrial partners
• Access to new funding and Programs
The Vega Program has yielded a major result for the Italian industrial and scientific space sector: • Industry has expanded its capability from manufacturing to the
managing of complex systems • Scientific institutions have received motivation and opportunities to
increase the knowledge in applied physics and technological aspects
50 years of cooperation in
space USA-Italy- 19 March
2013
The Sapienza “Helium Solution” (Di Giacinto-Favini-Cavallini)
• Pressure oscillations predicted during the
transient start up of VEGA, caused by the finocyl grain geometry adopted
• Eliminated by using Helium rather then
Nitrogen as pressurizing gas
• Experimental validation on 19/12/05 at Salto di Quirra (Sardinia)
• The Sapienza Solution has been adopted for all the Vega stages
• The CFD tool (SPIT) officially used by ESA/Avio in the frame of the VEGA Program
VEGA Project – Solid Propellant Propulsion
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 6/6
CFD for Flows over Nozzle Ablating Walls (Bianchi, Cavallini, Nasuti, Onofri)
- TOOLS developed, based on detailed simulation of chemical kinetics of the ablating species in the main flow.
- Good agreement between experimental data and numerical simulation
VEGA Project – Solid Propellant Propulsion
Ablative thermal protection systems (TPS) are characterized by the sacrificial removal of the surface material to protect the underlying structure: it’s mandatory to evaluate TPS thickness and Head End Pressure
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 7/6
Programs: - Avio: Lyra new upper stage, funded by ASI
- Avio: Mira engine, demonstrator, funded by ASI
- Cira: Hyprob, Tech program funded by MIUR / ASI
- Cras: scientific support
2 - STUDY FOR VEGA EVOLUTION :
DESIGN OF FUTURE CONFIGURATION
(Betti, Bianchi, Cavallini, Creta, Nasuti, Onofri, Pizzarelli, Valorani)
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 8/6
Ignition in a Liquid Rocket Engine
Reacting flow as Multiscale Problem (space & time)
Modeling Strategies
Direct Numerical Simulation in Combustion Wavelet Adaptive Multi-resolution (Spatial) Representation
G-Scheme Framework for Multi-timescales Problems
Large Eddy Simulation for Turbulent Combustion Conditional Moment Closure (CMC)
Dynamically Thickened Flame Model (DTFM)
Chemical Kinetics Mechanism simplification/reduction
2 - STUDIES TO SUPPORT THE DESIGN
OF A NEW LOX-METHANE ENGINE
Oxygen/Methane Ignition Studies (Casciola, Creta, Valorani)
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 9/6
CFD for Hot Gas Side Heat Load
(Betti, Lentini, Nasuti, Onofri, Pizzarelli)
SIMULATIONS:
2D axisymmetric and 3D RANS hot gas side
numerical simulation coupled with Quasi-2D
model for the regenerative cooling circuit.
GOALS:
• Evaluation of hot gas side heat transfer
• Design of cooling systems for liquid rocket engine thrust chambers
2 - STUDIES TO SUPPORT THE DESIGN
OF A NEW LOX-METHANE ENGINE
TOOLS for Analysis of Regenerative Cooling Circuits
Simulations must take into account: • Coupled thermal problem;
• Supercritical coolant
• Turbulent flows in 3D geometry
Sample results: SSME thrust chamber
Results permit to evaluate:
• Detailed Tw and qw distribution;
• Coolant and wall Tw,max and qw,max;
• Coolant Δp and ΔT.
2 - STUDIES TO SUPPORT THE DESIGN
OF A NEW LOX-METHANE ENGINE
(Nasuti, Onofri, Pizzarelli)
50 years of cooperation in
space USA-Italy- 19 March
2013
CRAS Sapienza Page 11/6
- Sapienza has offered support for the management of the Program
participating to many boards and committee (Di Giacinto, Favini, Cavallini,
Gaudenzi, Mastroddi, Nasuti, Onofri, ….)
- Important role has been played in the recent discussions related on the
launch of VEGA from the Kourou base to East-Equatorial direction:
• analysis of the possible trajectory without risk for possible impact on the
security of neighboring towns after a failure of the launcher (Colasurdo)
• Analysis of the radar equipments and location in the Kourou base for the
visibility and tracking of VEGA in the early phase of the trajectory
(Lombardo)
SCIENTIFIC and TECHNICAL SUPPORT TO ESA/ASI
BOARDS AND INQUIRY COMMITTEES
The Role of Uniroma1 on Solid Propulsion ofVEGA: Past, Present & Future
E. Cavallini & B. FaviniDipartimento di Ingegneria Meccanica e Aerospaziale
Sapienza University of Rome
Il lanciatore VEGA, una storia italiana di successoAgenzia Spaziale Italiana
1st April 2015, Roma
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Overview Uniroma1 Solid Propulsion Work-group & Activities
Support activities to VEGA Program concerning Solid Propulsion started in early2000 with almost continuous collaboration with ESA-ESRIN IPT Team
Staff Involved: 1 Full Professor; 1 Associate Professor; 1-2 Researcher(s) (+collaboration with Senior Researcher at CNR), led & supervised by M. Di Giacinto& B. Favini
Scientific/Research Activities> 60 papers on solid propulsion topics inclose relationship with VEGA SRMspublished in International Conferences6 Ph.D. Theses (3Y manpower each)devoted to Solid Propulsion topics duringVEGA development phase2-3 Master Theses per year devoted to basicresearch activities in Solid Propulsion withapplication to VEGA solid rocket motors
Support Activities
independent technical authorityfor cross-check & supportactivitiessupport to design/development& exploitation for solidpropulsion - analyses, prediction,reconstructions & anomalyinvestigationsparticipation to LV/LS/SRMreviews (PDR, CDR, GQR, FRR,MRB, ...)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 2 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Past
Use of helium as low-cost low-impact remedy for the onset of pressure oscillations duringignition transient for VEGA SRMsIdentification of root cause for the negative differential pressure onset during ignition ofZ9A QM2-VT: supersonic blockage due to igniter over-dimensioningDetailed thermal loads analysis on VEGA launcher in full configuration (all protrusionsincluded)
P80 DM fired with helium (2006) P80 QM fired with nitrogen (2007)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 3 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Past
Use of helium as low-cost low-impact remedy for the onset of pressure oscillations duringignition transient for VEGA SRMsIdentification of root cause for the negative differential pressure onset during ignition ofZ9A QM2-VT: supersonic blockage due to igniter over-dimensioningDetailed thermal loads analysis on VEGA launcher in full configuration (all protrusionsincluded)
Z9 QM2 - VT Bench Reaction (2008 - 2009) Z9 QM2 - VT CFD Supersonic Blockage (2010)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 3 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Past
Use of helium as low-cost low-impact remedy for the onset of pressure oscillations duringignition transient for VEGA SRMsIdentification of root cause for the negative differential pressure onset during ignition ofZ9A QM2-VT: supersonic blockage due to igniter over-dimensioningDetailed thermal loads analysis on VEGA launcher in full configuration (all protrusionsincluded)
Detail of VEGA Launch Vehicle Protrusions -CFD Mesh
VEGA Aero-thermo-fluid dynamic Study - CFD
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 3 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Present
Contribution to root cause analysis of Z23 EMA current over-consumptionCross-check activities of VEGA solid stages flights - SRMs internal ballistics & performanceanalyses & reconstructionsFirst assessments for solid propulsion of VECEP Program - preliminary configuration ofPCV & P120 (in the future) based on VEGA SRM experience
Z23 Lateral Force connected to EMA currentover-consumption - CFD (2014) Z23 Vorticity Field - CFD (2014)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 4 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Present
Contribution to root cause analysis of Z23 EMA current over-consumptionCross-check activities of VEGA solid stages flights - SRMs internal ballistics & performanceanalyses & reconstructionsFirst assessments for solid propulsion of VECEP Program - preliminary configuration ofPCV & P120 (in the future) based on VEGA SRM experience
P80 HUMP Correlation/Dispersion - (2014) Z9 HUMP Correlation/Dispersion - (2014)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 4 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Uniroma1 Main Contributions to VEGA Solid Propulsion: the Present
Contribution to root cause analysis of Z23 EMA current over-consumptionCross-check activities of VEGA solid stages flights - SRMs internal ballistics & performanceanalyses & reconstructionsFirst assessments for solid propulsion of VECEP Program - preliminary configuration ofPCV & P120 (in the future) based on VEGA SRM experience
PCV Preliminary Configuration - IgnitionTransient Assessment (2014)
P80 OdP - Experimental Data vs. NumericalSimulation (2014)
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 4 / 5
“The Role of Uniroma1 on Solid Propulsion of VEGA: Past, Present & Future”E. Cavallini and B. Favini
Synergies & Mutual Benefits of Solid Propulsion Support to VEGA
University Research & Teaching Activities
orientation of basic & applied research activities towards edge technologies & applicationsgeneration of high-skilled research competences integrated inside project & programmeaccess to sources of financing for applied research activities of young researchersorientation/integration of specialization courses & master theses with fundamental aspectsof SRM/launch vehicle design & lessons learned
Agency & Industries
availability of high-skill independent competences for activities of cross-check & support(demanding long-time-consuming/heavy-manpower studies not compatible withindustry/agency staff time-schedule)availability of ready-to-work post-graduate students with specific competences alreadyaware of main aspects of the project/programmesupport to design & development, analysis of anomalies during development/exploitationphase
E. Cavallini (Sapienza) Il lanciatore VEGA, una storia italiana di successo - ASI 1st April 2015 5 / 5
top related