{"start":0,"take":1,"total":1,"items":[{"activityNumber":"1000045730","budgetReference":"E/0901-01 - Technology Developme","classified":false,"closingDate":"2026-11-18T13:00:00","extensionRequestDeadline":"2026-11-11T13:00:00","clarificationRequestDeadline":"2026-11-11T13:00:00","description":"Objective: To model the hypersonic flow around critical points of the re-entry of a upper stage vehicle, accounting for the catalytic properties of a Si-O-C ceramics, and for the chemical modifications of the surface exposed to the air.Description: There is a renewed interest in the implementation of reusable vehicles for in-orbit operation. A critical aspect in the lifetime of a space vehicle is to improve the durability of the thermal protection structures, to limit the replacement of the thermal shield. Ultra-high temperature ceramics (UHTC) materials, based on the Si-O-C compounds with dedicated coatings (boride, molybdenum etc.) demonstrated to be a good choice, due to their capability to resist and survive above 1500 K. To fully evaluate the response of any material in suchextreme operating conditions, it is also imperative to determine the catalysis in high temperature gas, strongly affecting the surface heat flux. Moreover, the interaction of the material coatings with dissociated gases such as oxygen and nitrogen, induces variations on the material properties. The technology to be developed is to model accurately the complex physical processes at the gas surface interface during ascent and descent, in which different coatings are experimental tested validating the predictive capabilitiesof the numerical models. The model will include advanced kinetics, using a hybrid state-to-state -Multi-Temperature (StS-MT) derived from the StS, where the vibrational degrees of freedom are described by the vibrational temperature, while electronic excited states are treated as independent species, in order to estimate the radiative properties. This activity encompasses the following tasks:- Development of a chemical model of air interacting with the Si-O-C ceramic material, in dissociation regime; - Development of a hybrid StS-MT kinetic model - Develop a database for thermodynamic properties and of transport cross sections for air including Si-O-C species - Implementation of kinetics and transport in a numerical tool for hypersonic flows for the reliable simulation, flat plate/coupons - Model chemical gas surface interaction, chemical stability, roughness, thickness, stability of coatings, catalyst by experimental plasma testing of different samples, thermal optical properties, emission spectroscopy - Numerical modelling and testing thermal bounding of the silica based substrate bounding with the coating, testing of the attachment devices - Evaluation of differentceramics suitable for the orbital entry conditions.","ecosrequired":true,"establishment":"ESTEC","firstPublicationDate":"2026-02-20T12:52:32","id":182544,"idEra":24644,"initiatingService":"TEC-MPA","ipmeasure":"N/A","isArchived":false,"isCancelled":false,"isReissued":false,"isToBeReissued":false,"issueQuarter":"261","lastUpdateTime":"2026-10-09T13:36:07","lastUpdateUser":"rhamill","openDate":"2026-10-06T15:09:03","priceRange":"> 500 KEURO","programmeReference":"Technology Developme","tanumber":"1-13301","title":"AEROTHERMODYNAMIC CHARACTERIZATION OF GAS-SURFACE INTERACTIONS FOR HYPERSONIC UPPER STAGE RECOVERY VEHICLES - EXPRO+","directorate":"Directorate of Tech, Eng.  Quality","countries":[{"id":1},{"id":168},{"id":67},{"id":27},{"id":26},{"id":25},{"id":24},{"id":23},{"id":22},{"id":19},{"id":17},{"id":16},{"id":13},{"id":12},{"id":11},{"id":10},{"id":9},{"id":8},{"id":7},{"id":6},{"id":5},{"id":2},{"id":15}],"products":[{"id":381}],"technologies":[{"id":315}],"status":{"id":2},"tenderType":{"id":5},"isFavourite":false,"eraVersion":1,"stageNumber":null,"isNew":false,"isUpdated":false,"declarationOfCompliances":["All the required declarations of compliance have  been addressed and included in our proposal's Cover Letter."],"keyAcceptanceFactors":["The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to satisfy the “Eligibility Requirements” (see section 1.1 of the EXPRO/TC);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to fulfil the requirements concerning “Free Competition” (see paragraph 10 of the Cover Letter of the Proposal Template);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to accept the conditions established for “Non commitment by the Agency in competitive procurements” (see section 1.7 of the EXPRO/TC);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to be compliant with the “Non Benefits Requirements” (see section 1.8 of the EXPRO/TC);","The Tenderer confirms that the tender Cover Letter and the Detailed Proposal contain a binding price;","The Tenderer confirms that the tender Cover Letter and the Detailed Proposal contain a price type compliant with the one requested in the ITT;","The Tenderer confirms that the tender is compliant with the budgetary limit applicable to the ITT;"],"evaluationCriterias":[{"criterion":"Background and experience (related to the particular field concerned) of the company(ies) and staff, including adequacy of the proposed facilities","weightingFactor":"45%"},{"criterion":"Understanding of the objectives of the activity and discussion of the problem areas, and adequacy of the programme of work","weightingFactor":"35%"},{"criterion":"Adequacy of the time dedication and costing, compliance with administrative tender conditions and acceptance of the contract conditions","weightingFactor":"20%"}],"entities":[],"procurementProposal":null,"responsible":"Agnese Soverini","updateReason":"Tender Clarification has been published"}],"totalNew":0,"totalUpdated":0}