Vai al contenuto

F-22 fleet grounded

-{-Legolas-}-

Da -{-Legolas-}-
in News Aviazione

 Condividi

Messaggi raccomandati

TT-1 Pinto TOP GUN

TT-1 Pinto

Inviato
Inviato

E' confermato .... volano di nuovo ....

 

 

.... dal "Daily Report" del 27 Ottobre (AFA - U.S. Air Force Association) ....

 

 

Raptors Return to Flight:

 

The Air Force's F-22s are flying again, officials at JB Langley-Eustis, Va., and JB Elmendorf-Richardson, Alaska, told the Daily Report Wednesday.

Both bases temporarily grounded their Raptor fleets last week after two Virginia-based pilots experienced hypoxia-like symptoms during a training sortie on Oct. 20.

Alaska's aircraft were up and flying again Monday.

Officials there temporarily paused operations over the weekend as a precaution following the incident in Virginia, a base spokesman told the Daily Report.

The restriction on Langley-Eustis' aircraft was lifted by 8:00 a.m. on Tuesday US East Coast time and the F-22s are once again flying the "same number of sorties as before the brief pause," said Monica Miller Rodgers, a spokeswoman with the joint installation's 633rd Air Base Wing.

Raptor pilots are not operating under any new restrictions.

However, "the commander continues to closely monitor operations," said Miller Rodgers.

The Air Force declined to release any additional information on the Oct. 20 incident, saying officials continue to analyze it.

 

—Amy McCullough

  • 1 mese dopo...
  • Risposte 117
  • Creata
  • Ultima Risposta

Partecipanti più attivi

Giorni più popolari

Partecipanti più attivi

Giorni più popolari

  • 2 settimane dopo...
eugy78 Fishbed Colonnello

eugy78 Fishbed

Inviato
Inviato

mi pare strano...il ghiaccio nel carburante,,,e trale la escludo al 98% perchè sia il jp-4; jp8 ...alias f34; f-40 ecc...hanno una componente antighiaccio oltre -40°C.....

 

semmai è più probabile che; sia stato il fenomeno del carburante inquinato...da acqua; che dopo tempo si trasforma in acido solforico.....e corrode le tubatire; guarnizioni....anche perchè il motore avio ..ha il funzionamento garantito con anche in circa il 40% di acqua respirata dal compressore...

 

comunque il fenomeno del ghiaccio al carburante ....mi suona altamente improbabile..... :huh:

-{-Legolas-}- TOP GUN

-{-Legolas-}-

Inviato
  • Autore
Inviato

Secondo l'Air Force, è del pilota la colpa di uno degli incidenti occorsi all'aereo per mancanza di ossigeno, con la perdita di pilota e aereo.

 

La colpa del pilota è di aver focalizzato la sua attenzione sulla mancanza d'ossigeno, anzichè cercare di riprendere l'aereo.

 

Fonte ABC News

  • 2 mesi dopo...
  • 2 settimane dopo...
  • 2 settimane dopo...
TT-1 Pinto TOP GUN

TT-1 Pinto

Inviato
Inviato

Dal "Daily Report" dell' AFA (U.S. Air Force Association) - Friday March 30, 2012

 

No Root Cause In Hand

 

Despite an extensive investigation, the Air Force has yet to pinpoint the cause of a series of "physiological incidents" with F-22 pilots that led to the grounding of the Raptor fleet last year, stated service officials Thursday.

"We do not have a root cause in hand," said Gregory Martin, retired Air Force general, in presenting the findings of the Air Force Scientific Advisory Board's seven-month study into the F-22's oxygen-generation system during a Pentagon briefing.

Martin led this effort, which tried to determine why Raptor pilots have experienced symptoms akin to insufficient oxygen supply in flight.

Among its findings, the study concluded that contaminants identified in the pilots' air supply have not risen to levels known to cause health risks or impaired performance.

 

Further, it highlighted that the F-22's on-board oxygen-generation system, backup system, and emergency oxygen system are not classified as "safety-critical items."

The study recommended installing a backup oxygen supply for the aircraft's life-support system and adding a ground collision-avoidance system to the aircraft.

The study panel also recommended continued data collection and pilot monitoring, an activity that Air Combat Command is now leading.

(F-22 briefing transcript)

 

—Marc V. Schanz

Raptor Fleet Taking a "911 Approach"

 

Air Combat Command continues taking measures to closely track conditions in the F-22 cockpit to ensure the safety of Raptor pilots, some of whom have experienced hypoxia-like symptoms—as if they have insufficient oxygen in flight—in certain environments.

Maj. Gen. Charles Lyon, ACC's director of operations, told reporters at the Pentagon on Thursday that there have been more than 10,000 Raptor sorties since last fall when F-22s returned to flight after a fleet standdown in May.

To increase confidence in the safety of flight operations, the command added equipment in Raptor cockpits to measure the rate of oxygen to the pilot and the pilot's heart rate and oxygen levels. Further, air quality is inspected via filters, said Lyons. Officials are also in the process of replacing the small ring formerly used by pilots to access the aircraft's emergency oxygen system with a large handle, he said.

The latter is more user friendly.

"We have taken a '911-call approach,'" said Lyon of current F-22 flight operations.

Whenever a pilot gets an indication that something is wrong, he is to terminate the sortie, land immediately, and meet a medical team for a battery of tests, he said.

(F-22 briefing transcript)

 

—Marc V. Schanz

Links ....

 

http://www.af.mil/information/bios/bio.asp?bioID=6314

 

http://www.af.mil/information/bios/bio.asp?bioID=8309

 

http://www.defense.gov/utility/printitem.aspx?print=http://www.defense.gov/transcripts/transcript.aspx?transcriptid=5001

 

 

2hcpbw1.jpg

  • 2 settimane dopo...
madmike Generale di squadra aerea

madmike

Inviato
Inviato

USAF secretary confident in F-22 despite 'lingering uncertainty'

The top US Air Force (USAF) civilian says uncertainty remains about the F-22 Raptor stealth fighter after an inconclusive investigation into 'in-flight physiological events', but he is confident in the aircraft's safety. Pilots flying the F-22 have reported physiological incidents in which they experienced 'hypoxia-like' symptoms, or oxygen deprivation

 

[first posted to http://jdw.janes.com - 05 April 2012]

 

 

non il massimo della vita.....

  • 3 settimane dopo...
madmike Generale di squadra aerea

madmike

Inviato
Inviato

Francamente, questa è una notizia gravissima.

 

Significa che nella USAF sanno benissimo che il problema è molto, molto grave. Io non ricordo, a memoria, altri casi del genere, fra l'altro gestiti in questa maniera, con grande accondiscendenza (il che significa che anche i vertici sanno che il problema è grave).

gepiro66 Sottotenente

gepiro66

Inviato
Inviato

Se il comandante in persona dell'Air Combat Command si sente in dovere di dividere il rischio con i suoi piloti ("non mi sento di chiedere ai miei uomini di fare qualcosa che non sarei disposto a fare io stesso", quasi si trattasse di affrontare il fuoco nemico) e anzichè stroncare un inammissibile insoburdinazione parlla di evitare forzature, la situazione deve sembrare, con grande imbarazzo, pressochè irrisolvibile.

Niente male per un gioiello teconologico dal costo astronomico......, il gigante dai piedi di argilla?

TT-1 Pinto TOP GUN

TT-1 Pinto

Inviato
Inviato

Dal "Daily Report" dell' AFA (Air Force Association) di questa mattina ....

 

Final Raptor for Langley-Eustis

 

The 1st Fighter Wing at JB Langley-Eustis, Va., received its final F-22 Raptor, leaving only JB Elmendorf-Richardson, Alaska, that has yet to fill its full Raptor complement.

 

Aircraft 4194 arrived at Langley-Eustis on April 27, completing the base's F-22 force at 46 aircraft, said service officials.

 

The Air Force is scheduled to take delivery of aircraft 4195, its final F-22, on May 2 at Lockheed Martin's production facility in Marietta, Ga., before its flight to Elmendorf-Richardson for beddown, according to the officials.

 

The momentous deliveries come as uncertainties still loom (1) regarding the fifth generation aircraft's onboard oxygen supply.

 

Air Force leaders maintain that the F-22 is safe to fly.

 

Still, Air Combat Command boss Gen. Mike Hostage told reporters at Langley-Eustis on April 30 that a "very small" number of F-22 pilots have asked for reassignment until the problem is resolved.

 

He did not provide any additional details, according to media reports.

 

"Obviously, it's a very sensitive thing because we are trying to ensure that the community fully understands all that we're doing to try to get to a solution," stated Hostage reported (2) ABC News.

 

( See also CBS Money Watch report (3) )

Links ....

 

(1) .... http://www.airforce-magazine.com/DRArchive/Pages/2012/March%202012/March%2030%202012/NoRootCauseInHand.aspx

 

(2) .... http://abcnews.go.com/Blotter/22-fighter-pilots-fly-troubled-79-billion-jets/story?id=16250417#.T6Aq9-jO0SE

 

(3) .... http://www.cbsnews.com/8301-505245_162-57424854/air-force-leader-some-pilots-want-to-avoid-f-22/

-{-Legolas-}- TOP GUN

-{-Legolas-}-

Inviato
  • Autore
Inviato

Questo è un tipo di approccio interessante, rivolgere l'attenzione all'equipaggiamento del pilota:"In some cases, if the "fit is off by what would seem to be an insufficient amount,” it could impact the physiological support for the pilot. “It could be things such as the gear we are wearing and how it is assembled,”

Crea un account o accedi per lasciare un commento

Devi essere un membro per lasciare un commento

Crea un account

Iscriviti per un nuovo account nella nostra community. È facile!

Registra un nuovo account

Accedi

Sei già registrato? Accedi qui.

Accedi Ora
 Condividi
Vai alla lista discussioni
×
×
  • Crea Nuovo...