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VERSION:2.0
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SUMMARY:Qualification and Diagnostics development for the European Shock-T
 ube for High-Enthalpy Research
DTSTART:20220908T140000Z
DTEND:20220908T160000Z
DTSTAMP:20260922T141108Z
UID:3c247840-bf1f-48e8-9192-ffc0d2b646ac
SEQUENCE:3
CREATED:20220902T084116Z
DESCRIPTION:Abstract:The ESTHER shock tube is a new state-of-the-art facil
 ity at Instituto Superior Técnico to support future ESA planetary explora
 tion missions. The facility recreates the re-entry plasma conditions susta
 ined by a hypersonic velocity atmospheric entry. These shock wave velociti
 es are in the range of 4 to 14 km/s range. A high-pressure combustion cham
 ber using a mixture of He:H2:O2 ignited by a high-power Nd:YAG laser acts 
 as the driver. A qualification campaign was carried out with 100 shots and
  evaluating the effects of air:fuel ratio\, filling pressure\, inert gas d
 ilution and ignition mode. These parameters directly affect the produced s
 hockwave velocity and should be effectively controlled.Alongside the drive
 r qualification the development of different diagnostics is presented\, na
 mely the VUV spectroscopy system and a compact reflectometer/interferomete
 r for space applications. Technical requirements and architecture of a ref
 lectometry/interferometry equipment tailored for both ground-test faciliti
 es (shock-tubes and plasma wind-tunnels) and flight experiments are propos
 ed.A simulation of electromagnetic environment for the RAM-C flight experi
 ment\, obtained using a CFD code coupled to an electromagnetic propagation
  code is presented\, outlining the adequacy of such a diagnostic for impro
 ving verification and validation for high-speed entry plasma flows.
LAST-MODIFIED:20220902T084216Z
LOCATION:Sala de Formação Avançada do DF (Sala 2-8.11 - 2º Piso do Pav
 ilhão de Física)
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/qualification-and-diagnost
 ics-development-for-the-european-shock-tube-for-high-enthalpy-research/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="s1ya8">Abstract:</p><p dat
 a-block-key="1cd5o">The ESTHER shock tube is a new state-of-the-art facili
 ty at Instituto Superior Técnico to support future ESA planetary explorat
 ion missions. The facility recreates the re-entry plasma conditions sustai
 ned by a hypersonic velocity atmospheric entry.<br/><br/> These shock wave
  velocities are in the range of 4 to 14 km/s range. A high-pressure combus
 tion chamber using a mixture of He:H2:O2 ignited by a high-power Nd:YAG la
 ser acts as the driver. A qualification campaign was carried out with 100 
 shots and evaluating the effects of air:fuel ratio\, filling pressure\, in
 ert gas dilution and ignition mode. These parameters directly affect the p
 roduced shockwave velocity and should be effectively controlled.<br/><br/>
 Alongside the driver qualification the development of different diagnostic
 s is presented\, namely the VUV spectroscopy system and a compact reflecto
 meter/interferometer for space applications. Technical requirements and ar
 chitecture of a reflectometry/interferometry equipment tailored for both g
 round-test facilities (shock-tubes and plasma wind-tunnels) and flight exp
 eriments are proposed.</p><p data-block-key="3snk4"><br/>A simulation of e
 lectromagnetic environment for the RAM-C flight experiment\, obtained usin
 g a CFD code coupled to an electromagnetic propagation code is presented\,
  outlining the adequacy of such a diagnostic for improving verification an
 d validation for high-speed entry plasma flows.</p>
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