Visualizzazione post con etichetta c919. Mostra tutti i post
Visualizzazione post con etichetta c919. Mostra tutti i post

venerdì 27 aprile 2018

Sembra che ci sappiano fare:Cina. Il caccia J-20 potrebbe stare all’altezza dell’F-22 Raptor.

Giuseppe Sandro Mela.

2018-04-25.

J-20__001

«Il Chengdu J-20 è un aereo da caccia stealth di quinta generazione sviluppato dall'azienda aeronautica cinese Chengdu Aircraft Industry Group negli anni duemila e dal 2016 in fase di preproduzione. ....

Pare sia un bireattore con configurazione alare delta canard con elevate caratteristiche di invisibilità, supercruise e maneggevolezza, nel complesso comparabile all'F-22 americano. Il design dovrebbe trarre parzialmente ispirazione dal Mig 1.44 e dal Northrop-McDonnell Douglas YF-23 Black Widow II.Tra le caratteristiche innovative figurerebbero un radar AESA a scansione elettronica sviluppato localmente, una stiva interna, un'interfaccia digitale, un sistema di spinta vettoriale e una grande capacità di trasporto di armi e carburante in stive interne.

Le informazioni in possesso dai media affermano che siano stati realizzati 9 prototipi (le cui foto sono apparse in rete il 22 dicembre 2010), e che si stanno effettuando numerosi test a terra; mentre sembra che il primo test in volo si sia tenuto l'11 gennaio 2011 sui cieli della città di Chengdu.

Anche il J-20 è attualmente equipaggiato con due turbofan di fabbricazione russa, anche se il caccia di linea dovrebbe essere dotato di un motore di concezione e produzione nazionale.» [Fonte]

*

Dai dati disponibili, sembrerebbe che il J-20 abbia una velocità massima di Mach 2.5, un raggio di azione di 2,000 kilometri ed una tangenza di 20,000 metri.

Sull'armamento corrono voci discordanti, forse perché riferite a versioni differenti.

«Il J-20 dovrebbe trasportare internamente fino ad un massimo di quattro missili BVRAAM, beyond-visual-range air-to-air missiles e due a corto raggio PL-10.»

* * * * * * *


We asked a military analyst how the F-22, Su-57, and J-20 stealth planes match up [Business Insider]

«- With Russia and China beginning to field stealth jets, Business Insider sat down with Michael Kofman, a military analyst, to get his impressions on how they match up with the US's stealth planes.

- Kofman said Russia's Su-57 didn't match the stealth capabilities of the US's F-22 or F-35 but would be a capable platform.

- He also said that while China's J-20 had good avionics and software, it was inferior to the Su-57 because of its older engine model and large surface.

*

There have been a few developments in the stealth world in the past month, with Russia deploying its Su-57 to Syria and China announcing its J-20 is combat ready.

With more countries now fielding and trying to market stealth jets, Business Insider spoke to Michael Kofman, a senior research scientist at the think tank CNA and fellow at the Wilson Center focusing on Russia's military and defense, about how the Su-57 and the J-20 match up with the US's stealth planes. ....

What do you think overall of the Su-57? I think it's a stealthier aircraft than your typical fourth-generation design. I don't think it matches the stealth capability of the F-22 or F-35, nor does it match the price tag of them. I think it's a poor man's stealth aircraft. I think it'll be a very capable platform. I don't think it'll match or compete the low-observation parameters of US aircraft. ....

The F-22 is actually really good in maneuverability too. The F-35 not so much, but the F-22 is actually a brilliant aircraft. We still have a lot of them. But the Su-57 is not meant to be a direct competitor to the F-22 or F-35. ....

Is the Su-57 better than the J-20? Well, it's certainly far — if not further — along in technology design. ....

What do you think about the J-20 compared to the F-22 or the Su-57? I suspect that the J-20 probably has great avionics and software but, as always, has terrible engine design. In fact, Chinese low-observation aircraft designs like J-31 are flying on older Russian Klimov engines because the Chinese can't make an engine. Others are Russian saturn engines, or Chinese engines based on western designs.»

* * * * * * *

Gli esperti del The Diplomat sembrerebbero dare una migliore valutazione del J-20.

«The J-20’s rapidly evolving combat capabilities could make it a world leading aerial warfare platform»

*

«China’s Chengdu J-20 fifth generation air superiority fighter first entered service in early 2017, providing the People’s Liberation Army Air Force (PLAAF) with an analog to the U.S. F-22 Raptor»

*

«the J-20 to become a world leading aerial warfare platform»

*

«Other upgrades for the J-20 include improved software, improvements to radar capabilities, enhanced avionics and superior electronic equipment»

* * * * * * * *

A nostro personale parere, le discussioni tecniche interessano ben poco, specialmente per il fatto che nessuna delle parti in gioco ha reso note e pubbliche le vere specifiche dei propri mezzi.

Senza tener poi conto che questa tipologia di caccia necessita di tutta una lunghissima serie di servizi che spaziano dalle comunicazioni satellitari, all'integrazione in una rete radar a livello almeno locoregionale, e così via.

Ci sembrerebbe invece più proficuo soffermarci su di una considerazione ovvia, che poi ovvia sembrerebbe non esserlo molto.

Trenta anno or sono l'industria aeronautica cinese era praticamente inesistente. La società Comac è stata fondata l'11 maggio 2008, ed il suo prototipo C919 è già in fase di testaggio avanzato.

Al momento sta muovendo i suoi primi cautissimi passi, però c'è.

Cina. C919 ed An-225. Si sviluppa l’industria aeronautica cinese.

Il mercato interno cinese ha raggiunto livelli di tutto rispetto.

«La Cina acquisterà seimila aerei per 869 miliardi entro il 2035»

E senza un mercato civile interno resta ben difficile pensare di poter ottenere un'industria aerospaziale bellica efficiente.

In sintesi.

Nessuno sa né può prevedere il futuro, questi trend di crescita indicherebbero però la concreta possibilità che la Cina possa diventare in tempi brevi egemone .

domenica 8 ottobre 2017

C'è chi parla e chi fa

Giuseppe Sandro Mela.

2017-10-08

2017-09-29__C919__001

Ne avevamo già dato ampio annuncio.

Cina. C919 ed An-225. Si sviluppa l’industria aeronautica cinese.

Primo volo per il C919, decolla la sfida cinese a Boeing e Airbus.

Adesso l'annuncio del secondo volo di test.

«China’s domestically developed C919 passenger jet completed its second test flight on Thursday»

*

«The 166-minute flight time was more than double the maiden flight of 80 minutes, but 54 minutes shorter than plans detailed in an article published by state-backed news website ThePaper.cn earlier on Thursday»

*

«Strongly backed by China’s government, COMAC has so far announced orders for 730 C919 planes from 27 customers, many of which are Chinese leasing companies»

* * * * * * * *

Lasciamo i dettagli tecnici a quanti ne siano interessati.

In questa sede interessa far notare soltanto una cifra:

«orders for 730 C919 planes»

Un portafoglio ordini di questo volume permette di coprire tutte le spese di investimento e produzione, nonché di mantenere una scorta liquida di non indifferente portata per finanziare nuovi progetti.

Gran brutta notizia per i costruttori mondiali di aeromobili.Prima non c'era ed adesso c'è.

«Prima conquisteremo il mondo, poi l'ex-occidente pagherà il welfare cinese.»



→ Reuters. 2017-09-28. China's COMAC says C919 jet completed second test flight

SHANGHAI (Reuters) - China’s domestically developed C919 passenger jet completed its second test flight on Thursday, the jet’s maker said, but the duration and near five-month gap since its first flight have raised questions over whether its latest delivery target can be met.

The narrow-body C919, which will compete with Boeing Co’s (BA.N) 737 and the Airbus SE (AIR.PA) A320, is a symbol of China’s ambition to muscle into a global jet market estimated to be worth $2 trillion over the next 20 years.

However, the program has faced lengthy delays and missed its original target of delivery to customers by 2016 - a date reportedly pushed back to 2020. Sales to date have been restricted largely to its home market because it has yet to be certified by regulators in the United States and Europe.

Thursday’s flight was the second for the initial C919 test model, whose maiden flight was on May 5. The second of six planned test aircraft, which achieved power-on of its systems in July, has yet to fly.

Commercial Aircraft Corp of China Ltd (COMAC) [CMAFC.UL] said the plane reached an altitude of 10,000 feet during a flight that took off from Shanghai’s Pudong Airport at 07:22 a.m. (2322 GMT) and landed at 10:08 a.m.

“Various elements of the test flight, including with the raising/lowering of the landing gear, were all completed smoothly,” COMAC said in a statement.

The 166-minute flight time was more than double the maiden flight of 80 minutes, but 54 minutes shorter than plans detailed in an article published by state-backed news website ThePaper.cn earlier on Thursday. COMAC did not immediately reply to questions from Reuters on whether the flight was shorter than planned.

Bradley Perrett, a veteran China watcher and reporter at Aviation Week, said the five-month interval between the aircraft’s two flights was “extraordinary” and COMAC’s reported delivery target of 2020 appeared not to be firm.

“The conclusion must be that COMAC was not really ready for flight testing in May,” Perrett said in an article published on Wednesday. “A common view is that the C919 was put into the air so early for strictly political reasons, although there is no suggestion that doing so was unsafe.”

Mitsubishi Heavy Industry Industries Ltd’s (7011.T), Mitsubishi Regional Jet - Japan’s first passenger aircraft - took its second flight eight days after it first flew in 2015 while the gap between the first and second flight for the Airbus A350 was five days, Perrett said.

Strongly backed by China’s government, COMAC has so far announced orders for 730 C919 planes from 27 customers, many of which are Chinese leasing companies.

Though billed as homemade, the C919 relies on overseas technology from firms including General Electric Co (GE.N), France’s Safran SA (SAF.PA), Honeywell International Inc (HON.N) and United Technologies Corp (UTX.N).

COMAC also said its ARJ21 regional jet was in the air at the same time as the C919 on Thursday, marking the first time two types of domestically made passenger jets have taken to China’s skies simultaneously.

senzanubi | 2017-10-08 alle 9:45 | Etichette: Arj21C919Comac | Categorie: CinaEconomia e Produzione Industriale | URL: http://wp.me/p7rpO7-ah4