Russian plane disappears in Indonesia
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http://edition.cnn.com/2012/05/09/world/asia/indonesia-plane/index.html?hpt=hp_t1
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Jakarta, Indonesia (CNN) -- Russia's newest civilian airliner disappeared Wednesday from radar screens during a half-hour demonstration flight in the Indonesian capital, Jakarta, state-run RIA Novosti news service reported.
There were 44 passengers on board.
The plane went missing at about 2 p.m. in the area of Bogor, West Java, Indonesian Transportation Ministry spokesman Bambang Ervan told Metro TV.
The pilots requested permission to descend from 10,000 feet to 6,000 feet, air traffic controllers said. After that, all radio contact was lost.
The plane began making its descent but vanished from radar screens at 6,200 feet in a mountainous area.
By the time the plane was due to return it should have burned up its fuel, RIA Novosti said.
The Sukhoi Superjet 100 airplane arrived in Jakarta as part of a demonstration tour of six Asian countries. It had been to Myanmar, Pakistan and Kazakhstan, and was due to visit Laos and Vietnam after Indonesia, RIA Novosti said.
Sukhoi manufactures military aircraft and is known especially for its fighter jets. Its civilian aircraft is narrow-bodied with a dual-class cabin that can transport 100 passengers over regional routes. It flew its maiden flight in 2008.
In March, a Superjet 100 operated by Russia's Aeroflot Airlines was forced to abandon its flight to Astrakhan, Russia, and return to Moscow because of problems with the undercarriage, according to RIA Novosti.
A similar defect in another Aeroflot-operated Superjet 100 plane had to be fixed in Minsk in December.
Russia's state-run United Aircraft Corp. said the defect did not affect passenger safety. -
passenger aircraft + russian tech = high risk ?
based on past experience like the Tupolev series ā¦ tsk tsk -
An extremely sad and an unexpected end to what is to be a new era in Russian aeronautics. The Superjet 100 is a revolutionary new aircraft with the latest in many safety features not found in ealier Russian civillian planes.
It's SaM146 engines are state-of-the-art! Using BLISK technology with IBR (Integrally Bladed Rotors) used by the F-35s for STOVL. Downside, they require high maintenance work and regular harmonic vibration testing at specialised facilities.
Possible that the crash is due to the inavailability of such vital facility in Myanmar, Pakistan and Kazakhstan prior to Indonesia. Hope the investigation units shed some light into this. -
IBR is too fanciful to be used in a passenger jet which is normally a work horse which should not require intensive servicing
regular turbine would do the job nicely -
I was still thinking some aileens captured the plane ā¦
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daisyt:
I was still thinking some aileens captured the plane ...
No la... ..they found the wreckage liao.. -
daisyt:
I was still thinking some aileens captured the plane ...
which auntie ai leen's ? or you mean alien ? or ah lian ? -
verykiasu2010:
:rotflmao:daisyt:
I was still thinking some aileens captured the plane ...
which auntie ai leen's ? or you mean alien ? or ah lian ? -
verykiasu2010:
daisyt:
I was still thinking some aileens captured the plane ...
which auntie ai leen's ? or you mean alien ? or ah lian ?:rotflmao:
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@verykiasu2010
Yes, you're right indeed that a regular turbine should suffice. But as we know, even in the aviation industry there are 'politics' involved. Sad to hear of the great loss of lives.
Condolences to all the affected families. -
tattiana:
wat's a 'regular' turbine? - u both mean a conventional separate disk + blades configuration?@verykiasu2010
Yes, you're right indeed that a regular turbine should suffice. But as we know, even in the aviation industry there are 'politics' involved. Sad to hear of the great loss of lives.
Condolences to all the affected families.
d Blisk (or alternatively IBR) technology has been ard for more than two decades.
Its actually requires less maintenance due to less component parts but more costly to replace.
d airbus A380 engines incorporates IBR. -
Way2GO:
A blade holder for holding blades on an integrally bladed rotor has two legs located outboard of the blade in its installed position. A collar on each blade has holes for bolting the collar to the holder. Visual alignment is possible and access to the blade for optical temperature scanning is provided. After bonding a blade to the rotor, rotation of the rotor to the next bonding position is possible without removal of the holder.
wat's a 'regular' turbine? - u both mean a conventional separate disk + blades configuration?tattiana:
@verykiasu2010
Yes, you're right indeed that a regular turbine should suffice. But as we know, even in the aviation industry there are 'politics' involved. Sad to hear of the great loss of lives.
Condolences to all the affected families.
d Blisk (or alternatively IBR) technology has been ard for more than two decades.
Its actually requires less maintenance due to less component parts but more costly to replace.
d airbus A380 engines incorporates IBR.
the integration is between the disc and the rotor ..... the blades still have to be bolted on ?? I have reached my limit on turbine ..... turban I am okay -
verykiasu2010:
Wah... Half way reading this post I already feel so lost what u are explaining ... Must re-read :salute:
A blade holder for holding blades on an integrally bladed rotor has two legs located outboard of the blade in its installed position. A collar on each blade has holes for bolting the collar to the holder. Visual alignment is possible and access to the blade for optical temperature scanning is provided. After bonding a blade to the rotor, rotation of the rotor to the next bonding position is possible without removal of the holder.
the integration is between the disc and the rotor ..... the blades still have to be bolted on ??verykiasu2010:
U never fail to add in a little humor ...
I have reached my limit on turbine ..... turban I am okayI really like to read your post
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verykiasu2010:
d blades r attached to rotor in conventional turbines dat I hv seen r dovetailed, or fig tree-ed, no bolts.
A blade holder for holding blades on an integrally bladed rotor has two legs located outboard of the blade in its installed position. A collar on each blade has holes for bolting the collar to the holder. Visual alignment is possible and access to the blade for optical temperature scanning is provided. After bonding a blade to the rotor, rotation of the rotor to the next bonding position is possible without removal of the holder.
the integration is between the disc and the rotor ..... the blades still have to be bolted on ?? I have reached my limit on turbine ..... turban I am okay
IBR wld indicate dat d blades n rotor r forged or welded in one piece.
OK, let's not get too technical here.
Thot I just correct some misconception in earlier posts.
:celebrate:
Turban? u wanna go there? :nunchuk: :nunchuk: :nunchuk: -
:rotflmao: ...the sky is the limit de...
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auntieM:
:rotflmao: ...the sky is the limit de...
sensitive area.
dangerous territory to venture into.
let VK2010 start :evil: :evil: -
Way2GO:
it is definitely bolted. it is also mentioned as bolted by RR.
d blades r attached to rotor in conventional turbines dat I hv seen r dovetailed, or fig tree-ed, no bolts.verykiasu2010:
A blade holder for holding blades on an integrally bladed rotor has two legs located outboard of the blade in its installed position. A collar on each blade has holes for bolting the collar to the holder. Visual alignment is possible and access to the blade for optical temperature scanning is provided. After bonding a blade to the rotor, rotation of the rotor to the next bonding position is possible without removal of the holder.
the integration is between the disc and the rotor ..... the blades still have to be bolted on ?? I have reached my limit on turbine ..... turban I am okay
IBR wld indicate dat d blades n rotor r forged or welded in one piece.
OK, let's not get too technical here.
Thot I just correct some misconception in earlier posts.
:celebrate:
Turban? u wanna go there? :nunchuk: :nunchuk: :nunchuk:
it is not possible to be forged - of such size and complexity and yet of high precision, nor possible to be welded....and the blades and rotor make it impossible to be cast by powder too - no one can produce the mold for the casting too.