Moderadores: Lepanto, poliorcetes, Edu, Orel
ModeJu escribió:¿Lo de los motores de iones para aviación lo veis todavía demasiado lejano?.
https://escatuninter.blog/2018/12/14/co ... cauninter/
Enviado desde mi HTC U11 mediante Tapatalk
John P. Jasa, *
University of Michigan, Ann Arbor, MI, USA
Justin S. Gray, †
Jonathan A. Seidel, ‡
NASA Glenn Research Center, Cleveland, OH, USA
Charles A. Mader, §
Joaquim R. R. A. Martins ¶
University of Michigan, Ann Arbor, MI, USA
...
D. Optimization results
We performed six different individual optimizations using the VCE cycle, each one with a different maximum allowed inlet area, and repeated these six optimizations with the non-VCE cycle. By varying the area constraint and optimizing the physical and operational variables, we can directly see the effect that this constraint has on the optimal design and performance of the engine. Recall that all analysis done here is considering the uninstalled performance of the engine and we do include an afterburner. Because we do not have a measure of the effects of the inlet geometry, we use the inlet area constraint as a stand-in.
Results from these optimizations are shown tabularly in Tab. 3 and graphically in Fig. 8. As we make the inlet area constraint more restrictive, we see that the optimizer decreases the design case net thrust. However, since we are still enforcing the minimum thrust constraints on the off-design points, the optimizer increases FPR and decreases BPR to produce more thrust from the core to make up the decreased ability to produce thrust using the bypass stream. As one would expect, as we limit the design space through more restrictive inlet area constraints, the TSFC values increase. In each of the optimization cases, T4 is at its upper limit only for the TOC flight condition, whereas the other flight conditions are at partial throttle or are below the T4 limit.
At each optimal point, the VCE-capable cycle outperforms the non-VCE cycle. This is as expected, since we are giving the optimizer more freedom to vary the engine design at each flight condition when using VCE parameters. The non-VCE optimization corresponding to an inlet area of 1500 in2 did not converge because the optimizer could not find a feasible point, so we do not show results for that case.
...
Presente, pasado y futuro según RU:
Las claves serán la furtividad (fuera derivas), maniobrabilidad (empuje vectorial), sensores, propulsión, inteligencia artificial, armamento (buscadores bimodales), UAV y conectividad.
http://www.portail-aviation.com/blog/20 ... ncepteurs/
Un aspect important de l’innovation sur le SCAF sera la mise en réseau : actuellement sur Rafale le pilote se sert principalement de ses propres capteurs et d’un peu d’informations apportées par le réseau. Sur le SCAF la proportion va s’inverser. La gestion du transfert des données par le réseau se fera indépendamment du pilote, qui verra les données fusionnées il supervisera ainsi la globalité du processus.
champi escribió:Lepanto escribió:Según publica la prensa francesa, Francia y Alemania notificarán a Dassault Aviation y Airbus un primer contrato por dos años y 65 millones de euros para determinar la arquitectura y el concepto del programa SCAF.
Por aquí el enlace: https://www.dassault-aviation.com/fr/gr ... ien-futur/
Por cierto, nosotros no participamos en los requerimientos iniciales, que son a medida de Francia y Alemania:...
La JCS repose sur le document HL CORD (High Level Common Operational Requirements Document) cosigné par les ministres de la Défense des deux pays lors du Salon aéronautique ILA de Berlin en avril 2018, ainsi que sur les études de concept nationales respectives.
...
04/12/2018... Margarita Robles demande que l'entrée de l'Espagne dans le programme SCAF soit officialisée par la signature d'une lettre d'intention (LoI) ou d'un protocole d'accord (MoU) tripartite. Pour rentrer dans le programme, l'Espagne devra débourser un montant estimé à "25 millions d'euros environ au cours des deux prochaines années", a précisé le ministère de la Défense espagnol. D'ici à la fin de l'année, les Espagnols vont rejoindre l'accord de haut niveau (HL Coord), qui avait été signé entre la France et l'Allemagne en avril dernier à Berlin. Enfin, Madrid devrait signer au premier trimestre une lettre d'intention ou MoU pour participer au programme SCAF.
https://www.latribune.fr/entreprises-fi ... 99847.html
France and Germany award first FCAS contract
07 February 2019
Parly and von der Leyen announced the launch of the FCAS JCS on 6 February 2019.
French Armed Forces Minister Florence Parly and her German counterpart, Defence Minister Ursula von der Leyen, announced the launch of the joint concept study (JCS) for the Franco-German Future Combat Air System (FCAS)... on 6 February.
The EUR65 million (USD74 million) JCS contract was awarded to Dassault and Airbus to conceptualise the different FCAS capabilities. In a joint press release published on 6 February, the two companies said the two-year study would begin on 20 February and last two years, identifying the preferred baseline concepts for the FCAS Next Generation Fighter (NGF), remote carrier (RC) unmanned systems, and a system of systems and associated next-generation services.
The JCS is based on the agreed Franco-German High Level Common Operational Requirements Document signed by the two countries' defence ministers at the ILA Berlin Air Show 2018 last April, as well as French and German national concept studies. Dassault and Airbus said the study would pave the way for the future design, industrialisation, and full operational capability of FCAS, planned by 2040. The study will prepare and initiate demonstrator programmes for launch at the Paris Air Show in June 2019, the companies added.
The French and German defence ministers also announced an industrial co-operation agreement between Safran and MTU Aero Engines. This is expected to be followed by a contract for an FCAS engine demonstrator in mid-2019. In a joint press release published on 6 February, the two companies said Safran would take the lead in engine design and integration and MTU the lead in engine services. The German engine maker will be in charge of the low- and high-pressure compressors and the low-pressure turbine, and Safran for the combustor, high-pressure turbine, and afterburner.
https://www.janes.com/article/86233/fra ... s-contract
https://www.reuters.com/article/us-germ ... SKCN1PU2K0
https://www.flightglobal.com/news/artic ... tr-455591/
https://www.defensa.com/industria/franc ... ro-sistema
Safran and MTU Aero Engines join forces for the next-generation European fighter engine
February 6th 2019
In the frame of this partnership, Safran Aircraft Engines will take the lead in engine design and integration, and MTU Aero Engines will take the lead in engine services. MTU Aero Engines will be in charge of the low and high-pressure compressors and the low-pressure turbine, while Safran will be responsible for combustor, high-pressure turbine and the afterburner. The existing joint venture Aerospace Embedded Solutions (AES) [is a 50/50 joint venture of MTU Aero Engines and Safran Electronics & Defens] will be in charge of the engine control hardware and software under the responsibility and the lead of Engine integrator (Safran Aircraft Engines). The intention is to achieve a balanced French–German industry program share, assuming balanced funding by France and Germany.
https://www.safran-group.com/media/safr ... e-20190206
https://es.avionrevue.com/industria/saf ... -del-fcas/
Usuarios navegando por este Foro: No hay usuarios registrados visitando el Foro y 0 invitados