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Topics - horge

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1
Kindly let this float in Gen/Disc for a bit (for higher visibility) before punting it to Equipment/Gear.  :)

Have any of the Philippine armed services ever issued (or been issued) a spec/standard wristwatch for servicemen?
What/when, if so?

Thanks.

h.

2
Burke-class USS John McCain collides with Philippine-fl-- err, Liberian-flagged freighter

The destroyer USS John S. McCain collided with a merchant vessel on Monday morning as "search and rescue efforts" ensued,
the U.S. Navy says. The collision happened near the Strait of Malacca while the U.S. warship was headed to Singapore for a
routine port visit. The U.S. ship appeared to have damage to part of its side.

“There are currently 10 sailors missing and five injured,” the navy said in a statement posted on the website of the commander
of the US Pacific fleet. The USS John S. McCain is currently sailing under its own power and heading to port.

The merchant vessel, the Alnic MC, is a Chemical/Oil Products Tanker currently under the flag of Liberia.


http://www.c7f.navy.mil/Media/News/Display/Article/1283879/uss-john-s-mccain-collides-with-merchant-ship-near-strait-of-malacca-update-100/
http://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11908132
http://www.wcvb.com/article/us-military-vessel-collides-with-merchant-ship/12039353
http://www.kcra.com/article/us-military-vessel-collides-with-merchant-ship/12039353
https://www.vesselfinder.com/vessels/ALNIC-MC-IMO-9396725-MMSI-636017930

link to Burke-class collision back in June: http://defenseph.net/drp/index.php?topic=1914.0

3
US sailors missing after Navy destroyer collision off Japan

Tokyo (CNN) Seven US sailors are missing and the commanding officer of a US destroyer
is among the injured after the warship collided with a merchant ship off the coast of Japan,
the US Navy said. The guided-missile destroyer USS Fitzgerald suffered damage to its
starboard side ... Officials said the merchant vessel involved in the collision is the ACX Crystal,
a container ship flagged in the Philippines.

http://edition.cnn.com/2017/06/16/politics/us-navy-destroyer-collides-with-merchant-ship-japan/index.html





4
General Discussion / multi-platform OBOGS issues and the FA-50PH
« on: June 11, 2017, 10:32:33 AM »
For the past several years, US fighter pilot hypoxia has been an issue largely suspected
as rooted in the On-Board Oxygen Generation System (OBOGS). USAF's entire F-22 Raptor
fleet was grounded for four months in 2011, following total-loss incident with fatality.[1]

USN has been wrestling with hypoxia incidents afflicting Bug and SuperBug pilots for quite
some time, again with the suspect being OBOGS defects.[2]

Most recently (this June 2017) F-35A stationed at Luke AFB were grounded after problems
with pilot hypoxia.[3]

OBOGS replaced older systems like tanked gaseous oxygen (GOX) or tanked liquid oxygen
(LOX) such as were found on older aircraft like the F-5. OBOGS takes bleed air from the
engine's compressor --before the stage of any fuel combustion-- then regulates pressure
and temperature and runs the gas through an oxygen concentrator, then provides it to
the pilot's mask.

Honeywell was the provider of OBOGS for Raptor, among other aircraft. Cobham PLC has
supplied OBOGS for several platforms, including Viper, Bug/Superbug, JSF, and Gripen...
meaning this is an issue that may cut across manufacturers, platforms and users.

Quote
The third time the high-pitched alarm rang "deedle deedle" in the F/A-18F Super Hornet's cockpit,
it was clear that something with the air flowing into their regulators had gone horribly wrong.

"That's when I realize my lips were tingling, my fingers are tingling, and I'm like, 'S---, man,
something's wrong,' " a Navy pilot recalled. "And the guy in the back's like, 'Hey, dude! My
fingers are blue!'
https://www.navytimes.com/story/military/2016/05/08/nothing-scares-hornet-pilots-more-than-losing-oxygen-and-happens-all-time/82255406/

The workaround for F-22 was installation of extra backup in the form of bottled oxygen
that is released when low oxygen is automatically-detected. A non-automatic backup is
also found on USN Superbugs today --the pilot has to detect his own hypoxia, and then
manually elect to avail of backup oxygen supply (BOS).

The Raptor problem aside, one has to allow for politics in a JSF-and-SuperHornet context
of reporting "issues"; and pilot agitation --possibly aggravated by awareness of OBOGS
issues-- can itself lead to hypoxic stress. Furthermore, the FA-50PH's closest LockMart
relative, the F-16, doesn't seem to have suffered from any publicized issues with OBOGS
(also provided by Cobham PLC).

It is nevertheless interesting to consider the following:
Are PAF fighter pilots trained to recognize if/when FA-50PH's OBOGS stops working?
Is FA-50PH BOS automatic/elective/available in such an event?



[1] http://www.defensemedianetwork.com/stories/some-f-22-raptors-grounded-again/

[2] https://www.navytimes.com/story/military/2016/05/08/nothing-scares-hornet-pilots-more-than-losing-oxygen-and-happens-all-time/82255406/

[3] http://www.reuters.com/article/us-lockheed-airforce-idUSKBN1902QU

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