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Vol Ares 1-X

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Poncho (Admin)
Whisky Charlie

Re: Vol Ares 1-X

Message par Poncho (Admin) le Mer 28 Oct 2009 - 16:37

Elle s'est envolée...

La video a sauté au moment de la séparation...

Attendant le dépouillement

Bonne journée


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Poncho (Admin)
Whisky Charlie

Re: Vol Ares 1-X

Message par Poncho (Admin) le Mer 28 Oct 2009 - 17:16

Tiens, bizarre, mais probablement attendu, au moment de la séparation le second étage n'est pas bien resté en ligne.

J'imagine que sans propulsion c'était inévitable !

bonne journée



Source NASA Tv


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Poncho (Admin)
Whisky Charlie

Re: Vol Ares 1-X

Message par Poncho (Admin) le Mer 28 Oct 2009 - 17:31

Pour compléter :

Un petit lien sur la séquence qui aurait du se dérouler

http://www.nasaspaceflight.com/2009/10/live-ares-i-x-second-launch-attempt/



Conférence de presse sous 2 h.

On verra si tout a bien fonctionné ce qui ne semble pas évident à la vue des images.


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Poncho (Admin)
Whisky Charlie

Re: Vol Ares 1-X

Message par Poncho (Admin) le Jeu 29 Oct 2009 - 9:32

Bonsoir,

Une petite vidéo



Bonne journée


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87_Arnac

Re: Vol Ares 1-X

Message par 87_Arnac le Jeu 29 Oct 2009 - 10:25

Merci !

Concert de louanges probablement méritée pour la NASA... quoiqu'au final la prise de risque était probablement minimale.
Un choix respectable évidemment.
La portion du vol qui pose question début à 2:22 de cette video... la séparation des deux étages

Reste à recaler les sollicitations calculées sur les sollicitations enregistrées lors du vol.

Pour la petite histoire et pour fixer la puissance de feu médiatique de la NASA, hier soir sur F2 à l'heure du JT :

Clervois qui explique que c'est un lanceur plus "sécurisé" que les précédents, parce qu'il y a une tour de sauvetage...

Il y a une vie avant STS...

A ma connaissance, Mercury, Appolo, Soyouz en disposaient...

Sur que ça manquait sur Gemini (mais ça ne s'est jamais vu) et STS (et ça c'est vu).

Salutations

87_Arnac

Re: Vol Ares 1-X

Message par 87_Arnac le Mar 3 Nov 2009 - 12:54

Bonjour messieurs

A-t-il des dames ici ?

Je m'entête, je poursuis !
Je croyais que Trim2 pouvait être intéressé par des échanges sur ce sujet... en attendant la fin des vacances, je me sens seul.

M'enfin comme dirait Gaston L.

Quelques informations complémentaires sur Ares

Ici :

http://www.aviationweek.com/aw/generic/story.jsp?id=news/Engine103009.xml&headline=Real Upper-stage Ares I-Y Engine Mulled&channel=space

Real Upper-stage Ares I-Y Engine Mulled

Oct 30, 2009



By Guy Norris


Fresh from the success of its Ares I-X development flight-test launch Oct. 28, NASA is putting renewed efforts into studies of whether or not to incorporate a real Pratt & Whitney Rocketdyne (PWR) J-2X engine in the upper stage of the follow-on Ares I-Y suborbital test.

Both Ares I-X and I-Y are envisioned as development test shots to evaluate and fine-tune the design of the follow-on Ares launch vehicles planned under the original Constellation system architecture. Although operating under the shadow of budgetary and national policy uncertainty, NASA continues to press ahead with test plans for the Ares I-Y, scheduled for March 2014, as well as the Orion crew vehicle.

Ares I-Y was "scoped to be another suborbital flight demonstration with a five-segment first stage and a high altitude launch abort after separation," NASA Constellation Program Manager Jeff Hanley said. "But we are studying putting an engine on that flight, and we continue to evaluate that to see if we could put an engine in that upper stage and start it at altitude."

PWR is currently testing the gas generator of the J-2X engine for the upper stages of the Ares I and V launch vehicles at NASA's Marshall Space Flight Center and remains on schedule to perform the first full-engine system test in mid 2011, having just passed the critical design review (CDR). The first engine is scheduled to be integrated into the initial upper stage around September/October 2012. PWR is scheduled to complete development in 2014 under the terms of its extended $1.2 billion contract originally awarded by NASA in 2006.

The liquid oxygen/liquid hydrogen-powered J-2X builds on the experience of the Apollo-Saturn Program, and is being upgraded to provide 294,000 pounds of thrust to power the Ares vehicles compared with the 230,000 pounds of the original J-2. The J-2X incorporates significant upgrades to meet the Ares requirements and is considerably larger, measuring almost 16 feet in height.

However, Hanley warns that funding restrictions continue to hamper progress. "We are paced by the budget to buy big lead items for both Orion and Ares. That puts pressure on a program that wants to be ramping up to its peak," he says. "We originally crafted a plan that would have enabled Orion and Ares to fly in September 2013. We could have achieved that, but in the event it didn’t receive the funding it needed."

Encouraged by the Ares I-X success, Hanley says NASA would be eager to accelerate tests and do more flight-testing if the funds could be found. "That would be predicated on the budget. More money sooner is good, because it gets the parts built and into the supply chain. It takes three years [from ordering parts] to getting them into a rocket. You have to get the design done, and know what you want to buy. And that's what's put us into the 2014 time frame."

The Orion crew vehicle CDR is set to begin by the end of 2010 with completion due the following February, while CDR for Ares is due to follow in late 2011. "The first copy [of Orion] is being welded together at Michoud, Louisiana, and that will go into test next year," Hanley says, adding that the recently completed preliminary design review "was a big milestone for Orion, and will move the schedule quickly to CDR."

In related events, the tooling for the start of Orion manufacturing is arriving this week at Kennedy Space Center, he adds. The "boilerplate" version of the Orion capsule built for pad abort tests is meanwhile being outfitted at White Sands, N.M., ready for testing "next spring," according to Hanley, who adds the abort motor also has been delivered for integration into the vehicle.


Initialement prévu comme suit :

- Ares I-X : test dynamique uniquement sans test d’éléments complets du futur lanceur
- Ares I-Y : test du premier étage à 5 segments
- Ares I-Z : test du premier étage à 5 segments et du J2X du second étage

L’idée de la NASA est de sauter l’étape I-Y.
Pour aller plus vite et peut-être aussi sécuriser l’avenir tu projet. Mettre tout le monde devant le fait accompli ? Je reste étonné du peu de nouveautés implémentées dans Ares I-X au niveau de la propulsion (surtout comparativement au prix du lanceur…. Le SRB était loin d’être neuf).
Cette accélération nécessite évidemment une augmentation des crédits.
Horizon pour Ares I-Y/Z 2014.

De son côté la capsule avance. La Critical Design Review (CDR : comment traduire ça ?) est prévue pour la fin 2010. Cependant, la « boiler plate » (encore une fois quelle traduction ?) de la capsule pour les tests de la tour de sauvetage sera prête au printemps.

J’attends toujours les retombées d’Augustine
Avec impatience

Malgré tout, une nouvelle fusée dans l’espace ça reste du rêve…

Et c'est inestimable !

Poncho (Admin)
Whisky Charlie

Re: Vol Ares 1-X

Message par Poncho (Admin) le Lun 7 Déc 2009 - 22:29

Bonsoir à tous

http://www.aviationweek.com/



Ares I-X Data Continue To Match Models



Dec 4, 2009


After 30 days of data reduction, Ares I-X engineers continue to find fairly close correlation between their computer models and the flight performance of the test vehicle, which was the tallest rocket ever launched.
Flight-control algorithms developed for the operational vehicle "worked extremely well," said NASA's Marshall Smith, systems engineering and integration (SE&I) manager for Ares I-X, and the flight data in general validated the computer models being used to design Ares I.
"I, personally, from SE&I, am very, very pleased with the performance of our (guidance, navigation and control) system; the algorithms that we're testing for Ares I worked perfectly and flawlessly," Smith said. "The predictions matched extremely well. I think that is a key point validating our models that we would use to build Ares I, Ares V."
Factors driving thrust oscillation as the first stage nears burnout, once considered a possible danger to the Orion crew, were lower than expected, as was the roll torque generated by the solid-fuel stage, Smith says. Early modeling of the roll torque drove selection of a 600-lb.-thrust roll-control engine to handle it, which may prove more powerful than necessary.
Thrust oscillation pressure was about a third of what was predicted, Smith said, and the frequency was about half of the predicted value. NASA is designing a heavy set of titanium springs and seat shock absorbers to protect Orion crew exploration vehicle astronauts from thrust oscillation vibrations, but Smith said it is too soon to say whether there will be design implications from the Ares I-X data.
One unexpected result involved the structural damping after a deliberate "twang" engineers imparted to the long, thin vehicle late in flight.
"A quick look shows us it was 20% lower than the simulations," Smith said. "That gives us something to look at more."
Most of the analysis to date has been based on telemetry data, although the test vehicle's data recorders have been recovered and their contents are being added to the analysis. The 30-day results released Dec. 3 will be followed by more thorough analysis in late January and late February.
Recovery of the vehicle's first-stage cameras, and analysis of other data, appear to show the simulated stage separation went as planned, and the two stages did not come into contact as some remote video of the high-altitude event suggested. Analysis of the stage and its onboard data also offered clues to the failure of one of the three main parachutes and the partial failure of another, although finding the exact cause needs more analysis.
As a result of the chute failure, the stage was damaged on impact with the ocean, although its thrust vector control system probably would be reusable, Smith said.
NASA is studying possible follow-on tests that may include an active Orion launch abort system, says Bob Ess, the Ares I-X project manager.


Le logiciel de vol a donné toute satisfactions en répondant comme prévu.
D'un point de vue dynamique, les valeurs enregistrées sont toutes ou presque inférieures aux données attendues.
Pas de contact à la séparation du 1er étage et de du boiler plate

Sur les 3 parachutes pour la récup du booster un ne s'est pas déployé et un autre que partiellement.
Perso, sachant que c'était une des nouveauté testée pendant le vol c'est assez décevant sur ce point.


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Re: Vol Ares 1-X

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