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TURBOREACTEUR MILITAIRE.

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alain57
Whisky Quebec

TURBOREACTEUR MILITAIRE.

Message par alain57 le Mar 14 Avr 2009 - 21:47

Pour ce sujet sur les réacteurs militaire, il faut absolument commencé par le premier engin produit en série et utilisé en opération.
Le Junkers Jumo 004......qui a motorisé le Messerschmitt Me 262.

http://fr.wikipedia.org/wiki/Junkers_Jumo_004

http://commons.wikimedia.org/wiki/Category:Junkers_Jumo_004

http://tanks45.tripod.com/Jets45/ListOfEngines/Junkers/Junkers.htm

http://www.enpa-capmatifou.com/Equipements/Moteur%20JUMO%20004.htm

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Jeu 16 Avr 2009 - 21:59

Un autre précurseur...le RR NENE, ......le moteur du Gloster Metéor, et de quelques autres.......

http://www.enpa-capmatifou.com/Equipements/Moteur%20Rolls%20Royce%20NENE.htm

http://fr.wikipedia.org/wiki/Rolls-Royce_Nene

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Jeu 16 Avr 2009 - 23:39

Il y a 70 ans, le premier vol du turboréacteur
pour les photos ouvrir le lien....

http://www.techno-science.net/?onglet=news&news=6502

http://en.wikipedia.org/wiki/Heinkel_HeS_3

Il y a deux semaines, nous avions vu que le tout premier avion à réaction, le Coanda 1910, datait de la belle époque.
Il s’agissait de la création d’un jeune Roumain vivant près de Paris , Henry Coanda, qui était alors soutenu par certaines célébrités de l’époque dont Gustave Eiffel
Ce dimanche, nous allons changer radicalement à la fois d’époque et de contexte pour se situer en 1939, à l’intérieur du IIIème Reich, à l’aube de la seconde guerre mondiale.
C’est en effet juste avant et pendant la seconde guerre mondiale que la propulsion à réaction fait des progrès notables. Sous la direction de l’industriel Ernst Heinkel . Elle a construit, le premier turboréacteur de l’histoire, le HeS-1, est développé. Contrairement au thermo-réacteur du Coanda 1910, le turbo-réacteur n’est pas entrainé par un moteur à piston, il génère lui-même la force motrice de la turbine. Le prototype
fonctionne pour la première fois en 1937 mais doit être amélioré. S’il développe 280 Kg de poussée, il utilise de l’hydrogène comme carburant ce qui n’est guère sécurisant.

L’année suivante, un autre prototype, le HeS-3, est mis au point. Il développe une poussée nettement supérieure et consomme de l’essence classique. De plus, il est possible de faire varier la puissance en cours
de fonctionnement, ce qui est plus adapté pour l’usage opérationnel d’un engin de transport

Une seconde version de ce moteur, le HeS-3B, fut montée sous le fuselage d’un bombardier en piqué du constructeur, le He 118.
L’avion disposait ainsi de deux moteurs: le moteur à hélice d’origine, et le moteur à réaction placé entre les
trains d’atterrissage. Le pilote avait ainsi la possibilité d’utiliser le moteur standard de l’avion pour les décollages et atterrissages, qui sont les phases les plus critiques d’un vol, et mettait en route le réacteur pour les essais en cours de vol.
Les essais en vol du He 118 modifié eurent lieu en juillet 1939. Après le décollage, le réacteur fût démarré alors que l’avion volait à l’altitude de 400 m. Grâce à cette motorisation supplémentaire, l’engin accéléra et démontra les capacités du moteur. L’appareil revint à son aérodrome de départ où il effectua un atterrissage après extinction du réacteur.


Dernière édition par alain57 le Ven 17 Avr 2009 - 0:18, édité 1 fois

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Ven 17 Avr 2009 - 0:11

Merci pour cette leçon d'histoire, alain57 !

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Ven 17 Avr 2009 - 0:17

Merci Sevrien ..j'ai eu une pensé pour vous en postant le RR NENE.... angleterre

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Jeu 21 Mai 2009 - 0:22

Royal Australian Super Hornets receives GE engines

http://www.defpro.com/news/details/7474/

12:21 GMT, May 15, 2009 LYNN, Mass. | The first F414 engines for the Royal Australian Air Force (RAAF)
were shipped from Lynn to Boeing earlier this spring for installation on the F/A-18F Super Hornets.

In 2007 the RAAF ordered 54 F414-GE-400 engines for its 24 Super Hornets (through a Foreign Military Sales agreement with the U.S. Navy). Engine deliveries are scheduled to continue through 2010 for the RAAF, the inaugural international Super Hornet customer.

"This is a key milestone for us and our RAAF customer. GE has a long history working with the RAAF to support its fleet of F404 powered Hornets. We are looking forward to expanding our relationship with the delivery of the F414 powered Super Hornet," said Jim Caplan, F404/F414 Program Director at GE Aviation.

As of April 21, 11 F414 engines had been assembled, and tested and will subsequently be shipped to Boeing's facility in St. Louis where they are mated with the airframe.

The first RAAF aircraft will be in flight-test at NAWC China Lake while RAAF pilots will receive training at NAS Lemoore beginning early next year. The Super Hornets will then be ferried over to Australia beginning in March of 2010.

Under a 12-year TLS (Total Logistics Support) contract signed in late 2008, GE will provide comprehensive support for these engines for the projected life of the Super Hornet fleet as well as the F404 engines that
power the RAAF F/A-18A/B Hornets.

Plans call for the aircraft to be delivered starting in 2010, with a fully operational Super Hornet squadron to be
based at RAAF Base in Amberley in Queensland by 2012.

Twin F414 engines power F/A-18E/F Super Hornets and EA-18G Growlers. The F414 engine for the F/A-18E/F and EA-18G is rated at 22,000 pounds (98 kN) thrust and is in the 9:1 thrust-to-weight ratio class.

The F414 has also been selected as the powerplant for growth versions of the Saab Gripen. In addition, the F414 is being considered for India's Tejas Light Combat Aircraft, KAI/LMTAS A-50 light fighter (a derivative of the T-50 advanced trainer) and other combat aircraft under development.

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Mer 27 Mai 2009 - 8:59

Bonjour, chers tous ! Et voilà pour les sceptiques et ceux bourrées de parti-pris !

GE-RR !


Lien :
http://www.air-cosmos.com/site/business_wire.php?Id=20090526006183r1.xml
GE Rolls-Royce Fighter Engine Team Launches Path to Flight Test

GE Rolls-Royce Fighter Engine Team Launches Path to Flight Test
GE Rolls-Royce Fighter Engine Team
George McLaren
U.S.: 317.230.8260
george.h.mclaren@rolls-royce.com
or
Rick Kennedy
U.S.: 513.243.3372
rick.l.kennedy@ae.ge.com
or
Nick Britton
U.K.: 44.117.979.5943
nick.britton@rolls-royce.com

Cela progresse !
The GE Rolls-Royce Fighter Engine Team has launched its flight clearance certification review, a process that will prepare the F136 engine for flight testing over the next several months.
Following flight certification, the first F136-powered F-35 Lightning II will take to the air in early 2011, in alignment with Lockheed Martin's ongoing flight test schedule for the Joint Strike Fighter program.

Excellente nouvelle pour le programme, et pour GE-RR ! Pas contents, les Européens ? Lesquels ? RR (européen) a 40% du programme (est vraiment partenaire, à 40%, et non pas sous-traitant ! Idem sur le moteur P&W ! ).
The flight clearance certification reviews will include representatives from the GE Rolls-Royce Fighter Engine Team, Lockheed Martin, the U.S. Government Joint Program Office, the U.S. Air Force and Navy. The review team will evaluate all pre-flight and performance parameters that will lead the F136 engine to be cleared for flight testing. The review team has already conducted two days of detailed technical reviews, which included representatives from Edwards Air Force Base and Patuxent River Naval Air Station.
'This early look at our flight clearance process and program will enable the Fighter Engine Team to develop the best solutions to complex flight clearance issues, thus ensuring a safe and timely flight release for the F136 engine. We have flight clearance in our sight and will be powering the F-35 in the air very soon, as part of the rapidly developing F-35 program,' said Jean Lydon-Rodgers, President of the GE Rolls-Royce Fighter Engine Team.

Il est clair que les USA et tous les acteurs concernés, 'mettent le paquet' !
'Flight certification will be a challenging process but the F136 team will deliver on its commitments to Lockheed Martin and the Joint Program Office as we have demonstrated on all of our major milestones to this point. We have a solid record of on-time, on-budget results and every day we are focused on maintaining that level of performance for our customers,' said Mark Rhodes, Senior Vice President for the GE Rolls-Royce Fighter Engine Team.

Vrai ! Il faut reconnaître que ce partenariat GE-RR est exemplaire, et que le soutien apporté par GE à RR l'a toujours été !
Visiblement, comme nous l'avons déjà précisé et souligné, "GE Military/ Defense" semble bien diférent de "GE Civil" !
The GE Rolls-Royce Fighter Engine Team is currently in the fifth year of its System Development and Demonstration (SDD) contract with the Joint Program Office. The first SDD F136 engine, in production-configuration, began testing in January 2009, a month ahead of contract schedule, and has continued testing at GE's test facility in Evendale, Ohio.

Pour le moment, .... pas de retard, .... et pas de dépassement du Budget !
Two other F136 engines are currently in assembly and will be testing within a few months. The Fighter Engine Team has already received 70 percent of the total funding through its SDD contract, and has been progressing on schedule and within budget.

Il y a des contrastes sur la planète !
The remaining efforts in SDD will lead to the successful completion of the F136 development program and to production engine deliveries in 2012.

La voie est préparée !

Editor's notes
Cela vaut la peine de les lire !
The F136 engine is a product of the best technology from GE and Rolls-Royce, two world-leading propulsion companies. The GE Rolls-Royce Fighter Engine Team has designed the only engine specifically developed for the F-35 aircraft, offering extra temperature margin and affordable growth. The F136 engine will be available to customers in 2012.
GE - Aviation, with responsibility for 60 percent of the F136 program, is developing the core compressor and coupled high-pressure/low-pressure turbine system components, controls and accessories, and the augmentor. Rolls-Royce, with 40 percent of the F136 program, is responsible for the front fan, combustor, stages 2 and 3 of the low-pressure turbine, and gearboxes. International participant countries are also contributing to the F136 through involvement in engine development and component manufacturing.

Impressionnant, non ?
The F136 engine is the most advanced fighter aircraft engine ever developed and will be available to power all variants of the F-35 Lightning II aircraft for the US military and eight partner nations. The F136 program has already totaled more than 800 hours of testing in SDD and pre-SDD testing.
The first test runs for the new F136 engine in early 2009 topped a year of significant achievements for the GE Rolls-Royce Fighter Engine Team. The program successfully completed Critical Design Review in 2008, as well as completing the first testing at the unique, new Peebles, Ohio, test site, and full afterburner test runs at the US Air Force Arnold Engineering Development Center (AEDC) test facility in Tennessee.

Effort constant, malgré les péripéties politiques, pendant lesquelles le soutien de GE a été total, ppour le programme de ce moteur, et pour RR !
The F136 engine program has a solid history of executing its contract on schedule and within budget. As a result, the GE Rolls-Royce Fighter Engine Team consistently receives top reviews from the JPO for program execution.

Et tout ça compte !
About 900 engineers and technicians are engaged in the F136 program at GE Aviation's Cincinnati, Ohio, headquarters, and at Rolls-Royce facilities in Indianapolis, Indiana; and Bristol, England.

The SDD phase is scheduled to run through 2013; the first production F136 engines are scheduled to be delivered in 2012 for the F-35 Lightning II aircraft. This occurs during the fourth lot of F-35 aircraft production, which is very early in the overall aircraft production program.

The F-35 is a next-generation, multi-role stealth aircraft designed to replace the AV-8B Harrier, A-10, F-16, F/A-18 Hornet and the United Kingdom's Harrier GR.7 and Sea Harrier, all of which are currently powered by GE or Rolls-Royce making them the engine powers of choice for the U.S. and U.K. militaries. Potential F-35 production for the U.S. Air Force, Navy, Marines and international customers, including the UK Royal Air Force and Royal Navy, may reach as many as 5000 to 6000 aircraft over the next 30 years.

www.FighterEngineTeam.com

Bien sûr, un peu (?) de "marketing hype" en prime ! Wink

Invité
Invité

Re: TURBOREACTEUR MILITAIRE.

Message par Invité le Jeu 28 Mai 2009 - 0:07

Bonsoir,

J'avais lu cet article et comme je ne commenterai pas mieux je pose deux vues :



Superbe !


alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Mar 2 Juin 2009 - 10:21

article intéressant (avec schémas) a lire.........sous le lien.

DARPA’s Hypersonic Vulcan Engine Meld

http://www.defenseindustrydaily.com/DARPAs-Hypersonic-Vulcan-Engine-Meld-05466/#more-5466

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Mer 3 Juin 2009 - 8:41

Elimination d'une erreur !


Dernière édition par sevrien le Mer 3 Juin 2009 - 10:03, édité 1 fois

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Mer 3 Juin 2009 - 9:58

Bonjour, chers tous !
Enfin, ... quelqu'un qui a le courage et la perspicacité de regarder au-delà de l'aspect facial,.....superficiel des coûts ! Finaicer, je suis prêt à parler contre la sagacité conventionnelle et réductrice des approches purement comptab;le des coûts, ... surtout dans l'aviation en général et l'aviation militaire en particulier !

Dans celle-ci, il faut privilégier les aspects que sont , notamment, sécurité et disponibilité opératinnelles "in theatre" !

Ces soi-disant "cost accountants" ne tiennent même pas compte des vrais coûts financiers & economiques, du "down time" des aéronefs, en cas de pépin-moteur, quand il n'y a qu'un type de moteur ;
-- avec le vrai coût de la condamnation au sol des appareils (obligatoire, ..... en attendant d'obtenir la "clearance" de nouveau, après les vérifications d'usage ; et un pépin sur une base isolée dans l'Arizona envoie ses ondes de choc sur toute la planète....) ;
-- idem pour les moteurs des avions ravitailleurs (indubitablement, le point faiuble de l'offre NG-EADS, ... est le CF-6, qui vaut peu en matière de fiabilité et sécurité , par rapport au RR Trent 772B ; un ou de"ux incidents techniques par an,... sans parler de catastrophe, ou d'atterrissage d'urgence, .... et vous verrez bien le coût réel des précautions à) exercer immédiatement ! ) ;
-- pour les Boeing, avec les P&W proposés, ...... et les problèmes de pompage ("surge") toujours 'en emouscade" dans les coulisses, .... les "comptables et finaciers" (?) n'ont tenu compte de rien du tout !

Non prise en compte du vrai "big picture" / 'image globale', notamment en raison des des coûts moteurs correspondants (dans l'avaition civile), des GE90-115B, colossaux
-- dans les impacts sur B777-300ER (pannes et déroutements à tout bout de champ pour cause d'ETOPS, coûts supplémentaires du traitment au sol de ces moteurs, "à la façon CF-6", ..... détails dont le chiffrage ne fut jamais inclus dans la propagande-marketing , et qui n'est pas publié aujourd'hui ; demandez à AFI, à Emiratres ... et à d'autres opérateurs ! ),....
-- par rapport à ceux des moteurs des A340-600 !
----------------
Il est temps de mettre en face de cetta faune, qui possède le pouvoir du microphone et de la décision, de vrais experts en matière de "total costing", pour leur clouer le bec avec les faits du débat, et ne pas leur permettre de roucouler en émettant les sons doucereux de la musique politique / politicienne, ... totalement faussée !

Lien :
DATE:03/06/09. SOURCE:Flight International
F-35 chief endorses competition for engines and radars
By Stephen Trimble

New F-35 programme chief Brig Gen David Heinz strongly defended the case for funding two separate engines and raised the possibility of qualifying Raytheon or Thales as an alterative radar supplier.
Excellente nouvelle !
Speaking to reporters on 2 June, Heinz spoke out in favour of continuing production of the General Electric/Rolls-Royce F136 alternate engine despite its added costs.
"I believe that part of the debate that has to occur -- and is occurring - is, is there an operational risk that we are accepting by having just a single engine manufacturer?" Heinz asked. "I simply think that we focus too much of the discussion about the cost and not the operational risk."
Merci, Monsieur ! Mais, il faut pouvoir dire, aussi, qu'il est grand temps d'inclure tous les coûts, et non pas "une sélection tronquée de coûts conventionnels" !
Pratt & Whitney was selected to supply the F135 as the baseline engine, but the two engines are expected to compete for orders starting in Fiscal 2013.
Très bien ! Et que les "usual suspects" ne viennent pas jeter leurs accusations & allégations ridicules et futiles de partie-pris ("Tout ce soutien pour le moteur F136 est pour favoriser Rolls-Royce") ! Quelle ignorance ! RR est sur les deux programmes, P&W, & GE, à hauteur de 40% sur les les deux ! De fait, RR a 40% de tout le programme moteurs du F-35.
For the fourth year in a row, however, Congress is considering restoring funds after the DOD submitted a budget request for Fiscal 2010 that eliminates the programme. President Barack Obama has singled out the F136 as an example of government waste.
Heinz noted that he "categorically supports" the Pentagon's budget policies, but he is also concerned that relying on a single engine supplier may be an unacceptable risk. The F-35 replaces the F-16, F/A-18C/D and the AV-8B fleets, so a safety-critical issue affecting the F135 could cause the Pentagon to ground most of its tactical airpower fleet, he said.
Dans le militaire, c'est HEINZ qui a raison ! Les faits objectifs et les besoin s stratégiques plaident en sa faveur ! Il ! n'y pas place pour le DPO ! OBAMA est mal conseillé sur ce sujet !
Moreover, the "great engine war" in the 1980s between GE and P&W for F-16 and F-15 engines yielded a 20% cost reduction, Heinz said.

Oui !
It's not yet possible to predict the economic benefit of the new 'engine war', he added, but he does expect the rivalry to lead to faster technology upgrades and lower prices.
For different reasons, Heinz said that in theory he could support selecting Raytheon or Thales to supply an alternative radar for the F-35. Northrop Grumman currently supplies the APG-81 active electronically scanned array (AESA). But if Northrop's current factory becomes overwhelmed by the production ramp-up, Heinz said, the programme might seek to qualify Raytheon or Thales to supply a compatible alternative.
Bonne approche !
Raytheon's APG-79 AESA was originally developed for the Boeing X-32, the losing bidder in 2001 for the JSF contract. However, the US Navy selected the APG-79 for the F/A-18E/F Super Hornet and EA-18G Growler, and the radar is now in full-rate production. Meanwhile, Thales is developing the RBE-2 AESA for the Dassault Rafale.
Exemples concrets et 'parlants' !

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Mer 3 Juin 2009 - 10:02

Elimination d'une erreur.

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Sam 13 Juin 2009 - 1:59

Article intéressant :

Lien :
http://www.flightglobal.com/articles/2009/06/11/327771/rolls-royce-f136-survival-is-key-for-major-f-35-engine.html
DATE:11/06/09. SOURCE:Flight International
Rolls-Royce: F136 survival is key for major F-35 engine upgrade
By Stephen Trimble
The F-35 Joint Strike Fighter (JSF) could be the beneficiary around 2020 of a major engine upgrade if the F136 is not eliminated, a Rolls-Royce executive tells FlightGlobal.com

Déclaration intéressante !
The F-35's propulsion system has become the main target for the Adaptive Versatile Engine Technology (ADVENT) engine competition managed by the Air Force Research Laboratory (AFRL), replacing the postponed next generation bomber (NGB).
"I think we do have a first point of entry [for ADVENT] identified regardless of what happens with NGB, and that is JSF," said Dennis Jarvi, president of Rolls' defence business in North America.
Cette perception plutôt 'simple et directe' a le mérite d'être claire !
Rolls is currently a junior partner to General Electric for developing the F136 alternate engine for JSF. Meanwhile, GE and Rolls-Royce are competing for a Phase 2 contract by AFRL for the next round of ADVENT funding.
ADVENT technology, which promises a 25% increase in fuel efficiency or a corresponding boost in thrust, "would fit very nicely into something like F136," Jarvi said.

C'est clair !
Jarvi also noted the engine upgrade would likely coincide with a major airframe upgrade in the same timeframe.
The upgrade potential of the ADVENT technology could weigh into the four-year-old debate on whether to continue investing in two propulsion systems for the F-35 programme.

Voilà la question et l'axe de réflexion !
Saying the Pratt & Whitney F135 is sufficient for JSF's propulsion needs, the Department of Defense has proposed killing the F136 funding again for the fourth year in a row, but some lawmakers have proposed restoring the funding.

Oui !
The F-35 programme chief, Brig Gen David Heinz, has said he supports the DOD's decision, but he also believes that dueling JSF engine programmes could yield cost savings and reduce operational risk of a fleet-wide grounding caused by an engine problem.

Comme nous le disons depuis des années (et comme nous ne disons, aussi, fans le cadrs de l'affaire des "avions ravitailleurs" !
In 2007, the AFRL rejected the P&W bid for the first phase of the ADVENT programme. As a result, P&W would have to internally-fund variable cycle engine technology to upgrade the F135 in the 2020 timeframe.
"Here's an opportunity for GE and Rolls-Royce to take this technology as a team and incorporate it in F136 as part of the Fighter Engine Team on JSF," Jarvi said.

Il a raison ! Et GE / RR ne voudront pas rater ce genre d'occasion !
Rolls has discussed the potential for the F-35 propulsion upgrades with USAF officials, he added, and "they have encouraged us".

Affaire à suivre, donc !

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Dim 14 Juin 2009 - 13:37

Bonjour, chers tous ! Objectivité oblige ! N'est-ce pas ? Wink
Du moins, pour ceux qsui n'ont pas de parti-pris.
Lien :
http://www.flightglobal.com/articles/2009/06/14/327889/pw-stands-by-f135-upgrade-plan-for-jsf.html
DATE:14/06/09. SOURCE:Flight International
PW stands by F135 upgrade plan for JSF
By Mary Kirby

Two days after F-35 Joint Strike Fighter (JSF) engine rival Rolls-Royce unveiled plans for a dramatic engine upgrade after 2020, a Pratt & Whitney executive fired back with a strong defence of its current improvement plans for the F135.
Rien de plus normal ! Mais P&W ne saurait jamais être perçu comme étant objectif, puisqu'il veut le monopole / l'exclusivité !
Personne ne cherche à dire que le tandem GE / RR soit "objectif" dans son choix d'arguments, non plus ! Mais lui ne cherche qu'à partager le gateau ! Il ne charge pas à exclure la concurrence !
P&W does not see a requirement to develop an all-new powerplant for the F-35, says P&W military engines president Thomas Farmer.

Bien évidemment ! Cela va contre son intérêt !
Noting that the F135 is scheduled to deliver a 5% thrust upgrade in 2010, Farmer compared the F-35's propulsion needs to the 30-year development trajectory of the Lockheed F-16.
"The F-16 began at 24,000lb thrust and for P&W, it [has increased] up to 29,000lb of thrust as the aircraft evolved," Farmer says. "The same will occur with the JSF and P&W has the thrust and performance improvement plans that will accommodate the needs of the JSF."

Ceci n'est pas forcément faux (nous sommes objectifs). Mais ceci n'est pas un argumlent, non plus, contre le moteur du tandem-GE / RR (nous restons objectifs, et nul ne peut soutenir valablement le contraire ! Wink ).
Farmer's comments came after a Flightglobal report on 11 June that the General Electric/Rolls-Royce fighter engine team plans to dramatically boost the F136's power and fuel efficiency after 2020 using technology acquired from the Air Force Research Laboratory's adaptive versatile engine technology (ADVENT) programme.

La chronologie est, de fait, exacte.
Rolls and GE are competing to be selected by AFRL in September to develop ADVENT's variable-cycle engine technology, which is expected to generate a 25% improvement in fuel efficiency.
Meanwhile, the F135 is nearing a key milestone. First flight of BF-1, an F-35 prototype for short take-off and vertical landing (STOVL), is expected to take place mid- to late summer out of Fort Worth, Texas.

Oui ! Le moment est indéniablement "stratégique" !
The STOVL tests will follow P&W's recent completion of successful hover pit testing.

Oui ! Il semblerait que le "hover pit teting" soit reconnu comme une réussite !
More rigorous flight tests "where we'll really engage in short take-off" will take place at the firm's Patuxent River test centre in Maryland, says Farmer.

Oui !
The hover testing "to get the STOVL vehicle ready to fly" has gone "extremely well", says P&W president Dave Hess. "We are going to focus on executing perfectly and delivering a great engine for the Air Force, Navy and Marines."

Et ils y arriveront (espérons-le) !
Responding to customer requirements remains P&W's key focus at a time when there remains a lack of clarity on whether the F136 will play a role in the JSF. While the Department of Defense has proposed killing the F136 funding again for the fourth year in a row, some lawmakers have proposed restoring the funding.

Oui ! Il règne une certaine cacophonie, sur le plan "oral", ce qui n'est pas souhaitable !
However, notes Hess, US President Barack Obama recently singled out the F136 as an example of government waste "and frankly we'd agree with that". He says the near $5 billion required to fund an alternative engine "could mean 50 less JSF" aircraft purchased over the next six years, which could drive up cost per aircraft as the production ramp slows down.
ions comabazts
Mais la dernière fois qu'il y a eu de la concurrence entre GE é P&W, dans le domaine militaire des avions de combat, ... cela a résulté en une note moins "salée" du côté des moteurs (de 20%, tout de même ! )
[quote] Additionally, he says, the data "do not appear to be there that it saves money for the taxpayer". Rather, "the contrary seems to be true" - that it is going to cost more money.
"But again we can't control Congress. All we can continue to do is develop a great engine and an affordable engine," adds the P&W executive[quote]
Le vote politique risque d'emporter l'affaire !

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Lun 15 Juin 2009 - 19:42

Pratt & Whitney Signs Agreements with Italian TCS Group for F135 Engine Work

http://www.defpro.com/news/details/8059/

14:51 GMT, June 15, 2009 PARIS AIR SHOW | Pratt & Whitney has signed additional purchase orders with
TCS Group to manufacture critical engine components for the F135 propulsion system. These new orders, signed today at the Paris Air Show, have a potential value of more than $19 million over the life of the program. Pratt & Whitney is a United Technologies Corp. (NYSE:UTX) company.

“Through production of other critical F135 engine parts, TCS Group has already demonstrated its ability
to deliver key components meeting quality and cost requirements,” said Warren Boley, vice president, Pratt & Whitney F135 engine programs. “We look forward to continuing our relationship with TCS Group on the F-35 Lightning II program.”
Pratt & Whitney awarded TCS Group purchase orders for oil nozzle components for the main engine bearing compartments, and boroscope adapters, which facilitate internal inspection of the F135 engine.

“TCS Group is pleased to work with Pratt & Whitney on the F135 program and we are proud to produce these critical components for the F135 engine on the F-35 Lightning II,” said Paolo Picchio, president, TCS Group. “We look forward to continuing our work with Pratt & Whitney as we successfully transition the F135 program into the production phase.”
TCS Group specializes in precision machining of small engine components and is located in Torino, Italy.

For eight years and more than 11,300 test hours, Pratt & Whitney has been designing, developing and testing the F135 to deliver the most advanced fifth generation fighter engine for the U.S. Air Force, Marine Corps
and Navy, as well as eight international partner countries.

The F135 propulsion system powers the F-35 Lightning II and has proven it can meet diverse aircraft requirements. The ground and flight test experience demonstrates the maturity and the associated reliability of the F135 engine for armed forces around the world.

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Mar 16 Juin 2009 - 8:54

The F136 Engine: More Lives Than Disco?

http://www.defenseindustrydaily.com/the-f136-engine-more-lives-than-disco-03070/#more-3070

article long + photos a lire sous le lien......

sevrien
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par sevrien le Mer 17 Juin 2009 - 15:51

Pour ceux qui aiment ou dénigrent l'Adour !

Lien :
http://www.rolls-royce.com/defence/news/2009/160609_adour_indian_jaguar.jspRolls-
Royce engine test proves Adour MK 821 is fit for Indian Jaguar requirement
Tuesday, 16 June 2009
Rolls-Royce has successfully installed and tested the Adour Mk 821 engine in a Jaguar aircraft to prove its capability and suitability for the Indian Air Force’s Jaguar upgrade requirement.
The Mk 821 engine was installed into a Royal Air Force Jaguar for the ground test at Cosford, which was witnessed by a representative of the Indian Government. The installation went smoothly and required no airframe changes. During testing the Adour Mk 821 ran at full reheat and passed all performance targets set down by the Indian Air Force (IAF).
The test was conducted by Rolls-Royce Chief Test Pilot Phill O’Dell who commented: “As a former RAF Jaguar pilot myself I was impressed with the performance and functionality that the Mk 821 delivered. This had no adverse affect on the aircraft, highlighting the ease of the integration process and the compatibility of the engine with the airframe. This is no real surprise as they were literally made for each other.”
P. O'DELL n'est pas surpris ! Pour ma part , je le suis, ..... agréablement ! On apprend tous les jours !
Martin Fausset, Managing Director of Rolls-Royce Defence Aerospace, said: “As the only engine certified for the Jaguar we were always confident that the Adour MK 821 could be successfully installed without any aircraft modification, even with the new technologies and enhanced performance, but this exercise has allowed us to demonstrate this high level of compatibility to the Indian Air Force.
Cela n'est pas neutre !
“We believe that we have proved that the Adour MK 821 meets all Indian Air Force performance requirements at the lowest risk.”
The Mk 821 includes several technology inserts from other civil and military programmes and has been specifically designed for the Indian operational requirements, offering the twin benefits of greater thrust and lower life cycle costs.
Combinaison intérressante pour le client / l'opérateur !
The Adour engine has been developed by Rolls-Royce Turbomeca and the Mk 871 variant is currently in licensed production with Hindustan Aeronautics Limited (HAL) for India’s new Hawk Advanced Jet Trainer. The Mk 871 shares a high degree of commonality with the new Mk 821 variant, offering potential benefits to both the Indian Air Force and HAL in support of India’s objective of self-reliance.
Tout le monde devrait être content ! Wink

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Ven 19 Juin 2009 - 23:22

Le SIAE ou le pari de l'excellence....

http://www.ttu.fr/site/francais/frdocpdf/SIAE2009.pdf

Bonsoir, gros dossier a lire sous le lien pour ceux que cela intéresse....

alain57
Whisky Quebec

Re: TURBOREACTEUR MILITAIRE.

Message par alain57 le Mer 24 Juin 2009 - 15:34

Rolls-Royce Achieves Adaptive Versatile Engine Technology (ADVENT) Milestone

http://www.defpro.com/news/details/8264/

13:07 GMT, June 24, 2009 INDIANAPOLIS |Rolls-Royce has achieved a significant milestone in the Adaptive
Versatile Engine Technology (ADVENT) research program, delivering the adaptive fan system rig on schedule to the U.S. Air Force Compressor Research Facility (CRF). Rig testing will commence and will validate the performance of a key component of the LibertyWorks ADVENT engine.

Testing will be conducted over several months and will focus on variable cycle engine performance, a
critical component in achieving high-thrust capability for take-off and maneuvering, while reducing fuel consumption for long range and loiter operations.

Phil Burkholder, Chief Operating Officer for LibertyWorks, said: “The LibertyWorks technologies being created for the ADVENT program represent a revolution in gas turbine engines, improving existing performance
capabilities while delivering the benefits required by our customers: lower fuel burn and greater range. Achieving this critical milestone is an important step toward demonstrating the benefits of adaptive propulsion in future aircraft.”

The ADVENT technology demonstrator program, undertaken by Rolls-Royce North American Technologies, Inc. (LibertyWorks), is funded by the U.S. Air Force Research Laboratory (AFRL). ADVENT is part of Versatile
Affordable Advanced Turbine Engines (VAATE), an initiative sponsored by industry and Government partners to advance state of the art turbine engine technology for military and commercial aviation.

jullienaline
Whisky Charlie

Re: TURBOREACTEUR MILITAIRE.

Message par jullienaline le Mar 2 Fév 2010 - 22:07

Bonsoir à tous,

Tout est dans le titre !

Pratt & Whitney Delivers First Production F135 Engine

SINGAPORE AIR SHOW -- Pratt & Whitney has delivered the first F135 production engine for the F-35 Lightning II, a major milestone and clear demonstration of the maturity of the F135 engine. The engine has accrued more than 13,000 hours in test during the development program. Pratt & Whitney is a United Technologies Corp. (NYSE: UTX) company.
"The F135 engine program accomplishments and this initial production delivery milestone demonstrate we are continuing our legacy of fielding the most advanced military jet engine technology to the benefit of the warfighter," said Warren Boley, Vice President of F135 engine programs. "The F135 engine has reached a level of maturity after 13,000 hours of successful testing, building on heritage of the proven F119 engine powering the F-22."
"We are immensely proud of our final product as well as our partnership with the U.S. government, Lockheed Martin and Rolls-Royce," Boley said. "We are committed to delivering the safest, most powerful, affordable and reliable propulsion system for the F-35."
...
http://finance.yahoo.com/news/Pratt-Whitney-Delivers-First-prnews-3103176555.html?x=0

Amicalement


_________________
Jullienaline

Beochien
Whisky Charlie

Re: TURBOREACTEUR MILITAIRE.

Message par Beochien le Mer 16 Juin 2010 - 20:33

Bonsoir !

J'en ai profité pour parcourir le thread ...

Bien, une forme de fin de non recevoir entre l'admi US, et le consortium GE - RR, qui présente le moteur F136, comme seconde source à l'USAF, pour motoriser les F35 ... un budget hyper coulé depuis longtemps !

Robert Gates, secretaire de la défense dit, votre moteur ne présente pas les performances !
GE dit, ce n'est pas vrai M. le ministre on fait mieux ....
RR la boucle, normal sur cette affaire aux USA !
Et Mobama ne va pas payer plus, il l'a dit !

Parole contre parole, c'est grave à ce niveau ! GE prend des risques !
Le type de sortie qui soulage , quand on a tout perdu, mais est ce préserver l'avenir, même si cela fait du bien !
Et cela fait prendre des risques à EADS, ils sont présents sur les 330 MRTT les CF6 de GE !

------------------ Extrait de L'article du Guardian / Reuters ------------

http://www.guardian.co.uk/business/feedarticle/9130152


Gates says GE-Rolls Royce F-35 engine falls short
* Reuters, Wednesday June 16 2010

* GE denies engine falls short on performance
* GE, Rolls Royce building alternate F-35 fighter engine
By Jim Wolf
WASHINGTON, June 16 (Reuters) - U.S. Defense Secretary Robert Gates said an alternate engine for the multinational F-35 fighter jet appears to fall short on performance and would cost at least another $2.9 billion to develop.
"We think that the engine does not meet, probably does not meet, the performance standards that are required," Gates, who opposes the second engine as unnecessary, told the Senate Appropriations Committee on Wednesday.
The alternate engine is being developed jointly by General Electric Co and Rolls-Royce Group Plc.
A GE spokesman, Rick Kennedy, disputed Gates's comments. "The engine is not falling short of requirements -- it's meeting and exceeding requirements," Kennedy said in an email.

Gates's comments were good news for United Technologies Corp, whose Pratt & Whitney unit builds the engine being used in early F-35 production models.
President Barack Obama, consistent with Gates's advice, said last month he would veto any legislation to fund a second engine for the F-35, which is being built by Lockheed Martin Corp.

------------

JPRS

Beochien
Whisky Charlie

Re: TURBOREACTEUR MILITAIRE.

Message par Beochien le Ven 25 Mar 2011 - 7:50

Bonjour !

On reparle beaucoup du F136, le développement commun GE /RR destiné à offrir une seconde motorisation concurrentielle pour le F35 !

Intéressant pour maintenir les prix du F35 qui s'envolent, mais investir plus pour payer moins, quand tous les budgets du F35 sont explosés ... ben tout le monde y regarde à 2 fois dans l'administration Obama !

Le Congrès US à coupé toutes les subventions, définitivement, on ne sait pas trop, mais rien pour 2011 semble t'il !

GE et RR , se retrouvent devant les frais de développement à assurer ! (Self Funding, si si ça existe)

Des analyses intéressantes sont sorties hier et cette nuit !

http://www.aviationweek.com/aw/generic/story.jsp?id=news/awx/2011/03/24/awx_03_24_2011_p0-301354.xml&headline=Pentagon%20Killing%20JSF%20F136%20Engine&channel=defense

Et

http://www.flightglobal.com/articles/2011/03/24/354777/ge-rolls-royce-to-self-fund-f136-after-stop-work-order.html

JPRS

Beochien
Whisky Charlie

Re: TURBOREACTEUR MILITAIRE.

Message par Beochien le Mar 17 Déc 2013 - 21:45

Bonsoir !

P&W s'offre le record du monde de chauffe avec le F135 (Selon eux et c'est confidentiel) avec une mouture rendue plus puissante et destinée à pallier un manque de pêche trans-sonique affectant le F35 !
5% de P en plus, au banc pour l'instant !!

Quelle T° alors  Question 

Article de FlightGlobal, il faut s'inscrire et c'est gratos !

Surtout un gros travail sur le refroidissement, et peut être qq CMC à bord !
Bon, ils sont contents, pas de dégradations en plus ... c'est la fête chez P&W !
Une réponse du berger à la bergère, à GE, et son futur  LeapX ?? 
Hum, plutôt le positionnement pour le prochain bombardier US, d'après l'article !

C'est pour quand sur le GTF ??   geek 

------------------ Le lien, une image, et un extrait de FlightGlobal, Stephen Trimble --------------

Pratt & Whitney confirms that a testbed version of the Lockheed Martin F-35 propulsion system has run sustainably at possibly the highest temperatures ever recorded by a turbofan engine.

The test results are important because they illuminate a long-term growth path for the F135 engine and a potential solution to concerns about the F-35’s acceleration and fuel efficiency, and durability at higher thrust levels.

“We had a challenging problem. This is really hard stuff,” P&W general manager of next generation fighter engines Jimmy Kenyon says. “And we said we could get there, and we went out, and did the work and we nailed it.”

As the US military considers suppliers for a new bomber and, eventually, a sixth-generation fighter, the results on the F135 demonstrator also provide P&W’s unspoken rebuttal to claims by GE Aviation of achieving the hottest core temperature in tests earlier this year.

La photo avec PC, chaud les marrons !  What a Face 


Contenu sponsorisé

Re: TURBOREACTEUR MILITAIRE.

Message par Contenu sponsorisé Aujourd'hui à 1:23


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