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Meteorite Threat To Airliners  
User currently offlinetransaeroyyz From Canada, joined Dec 2010, 150 posts, RR: 0
Posted (1 year 9 months 1 week 5 days 23 hours ago) and read 9619 times:

Today's meteorite strike in Siberia produced a series of massive sonic booms, besides the meteorite itself posing a threat what is the likelihood of a boom knocking a plane out. Luckily none were affected today as that is a big corridor for flights. Thoughts?

21 replies: All unread, jump to last
 
User currently offlineEA CO AS From United States of America, joined Nov 2001, 13704 posts, RR: 61
Reply 1, posted (1 year 9 months 1 week 5 days 23 hours ago) and read 9607 times:
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I think it's practically not worth worrying about, as birds are infinitely more dangerous to aircraft than meteorite-driven sonic booms.


"In this present crisis, government is not the solution to our problem - government IS the problem." - Ronald Reagan
User currently offlineMrBuzzcut From United States of America, joined Jan 2008, 64 posts, RR: 0
Reply 2, posted (1 year 9 months 1 week 5 days 23 hours ago) and read 9587 times:

A sonic boom isn't going to affect aircraft in the vicinity, at least to my admittedly limited knowledge, and it is my firm opinion that if your aircraft is hit by a meteorite, well, it was just your time, because the odds are just inconceivable. If you survive it, start buying lotto tickets.

User currently offlinetrav110 From Canada, joined Jun 2005, 536 posts, RR: 3
Reply 3, posted (1 year 9 months 1 week 5 days 22 hours ago) and read 9498 times:

While yesterday's "impact" might not pose much of a risk, I wonder what would be the case if a meteorite the size of the one involved in the Tunguska event were to hit the atmosphere.

For those unfamiliar, the Tunguska event was a meteoroid that exploded upon hitting the atmosphere in 1908 over northern Siberia. The resulting airburst flattened 830 sq. mi of forest, and is estimated to be 1,000 times more powerful than the bomb dropped on Hiroshima.


User currently onlineNewark727 From United States of America, joined Dec 2009, 1367 posts, RR: 0
Reply 4, posted (1 year 9 months 1 week 5 days 22 hours ago) and read 9460 times:

Quoting MrBuzzcut (Reply 2):
A sonic boom isn't going to affect aircraft in the vicinity, at least to my admittedly limited knowledge, and it is my firm opinion that if your aircraft is hit by a meteorite, well, it was just your time, because the odds are just inconceivable

Yeah, that. It's just too unlikely to plan for, seems to me.


User currently offlinekalvado From United States of America, joined Feb 2006, 492 posts, RR: 0
Reply 5, posted (1 year 9 months 1 week 5 days 22 hours ago) and read 9378 times:

Quoting trav110 (Reply 3):
While yesterday's "impact" might not pose much of a risk, I wonder what would be the case if a meteorite the size of the one involved in the Tunguska event were to hit the atmosphere.

Estimates for Tunguska are 5 to 35 Mtons of TNT equivalent. You may compare that with tsar bomb ( http://en.wikipedia.org/wiki/Tsar_Bomba ) 50 Mtons, and Tu-95 bomber barely survived the event being 28 miles away from the epicenter.
I would expect airliner has a decent chance of surviving Tunguska event being more than 50 miles from the point of impact.


User currently offlineUA772IAD From Australia, joined Jul 2004, 1733 posts, RR: 3
Reply 6, posted (1 year 9 months 1 week 5 days 20 hours ago) and read 9170 times:

Asteroid - the rock while it's still outside of the atmosphere
Meteor - the rock once it has entered the Earth's atmosphere
Meteorite - the fragments of rock remaining from the meteor's collision.

Didn't know the difference myself until I heard it on the radio today...


User currently offlinethreepoint From Canada, joined Oct 2005, 2170 posts, RR: 9
Reply 7, posted (1 year 9 months 1 week 5 days 20 hours ago) and read 9031 times:

Quoting UA772IAD (Reply 6):
Meteorite - the fragments of rock remaining from the meteor's collision.

What are the fragments of the plane called that remain from a midair collision with a meteor(ite)?



The nice thing about a mistake is the pleasure it gives others.
User currently offlineJBo From Sweden, joined Jan 2005, 2373 posts, RR: 0
Reply 8, posted (1 year 9 months 1 week 5 days 20 hours ago) and read 9007 times:

Quoting threepoint (Reply 7):

F.O.D.?



I'd take the awe of understanding over the awe of ignorance any day.
User currently offlinezkojq From New Zealand, joined Sep 2011, 1328 posts, RR: 1
Reply 9, posted (1 year 9 months 1 week 5 days 14 hours ago) and read 8524 times:

There was an incident a couple of years back when a LAN Chile Airbus A340 flying from Auckland to Santiago was 'nearly' hit by either a Russian satellite reentering the atmosphere or a meteor. So clearly there is some risk, even though it must be miniscule.
http://avherald.com/h?article=3f1c5718&opt=0

Quoting UA772IAD (Reply 6):
Asteroid - the rock while it's still outside of the atmosphere
Meteor - the rock once it has entered the Earth's atmosphere
Meteorite - the fragments of rock remaining from the meteor's collision.

Didn't know the difference myself until I heard it on the radio today...

Handy.  



Air New Zealand; first to fly the Boeing 787-9. ZK-NZE, NZ103 AKL-SYD, 2014/08/09. I was 83rd to board.
User currently offlinegarpd From UK - Scotland, joined Aug 2005, 2696 posts, RR: 4
Reply 10, posted (1 year 9 months 1 week 5 days 14 hours ago) and read 8465 times:

Quoting threepoint (Reply 7):
What are the fragments of the plane called that remain from a midair collision with a meteor(ite)?

Over Russia? Spare parts



arpdesign.wordpress.com
User currently offlineskywaymanaz From United States of America, joined May 2012, 552 posts, RR: 0
Reply 11, posted (1 year 9 months 1 week 5 days 13 hours ago) and read 8405 times:

When TWA 800 went down this was one of the theories I read that was being considered somewhat seriously at one point. I think they thought it was a once in 100 year event that could happen with an airplane and small meteor fragment colliding.

User currently offlineGeo772 From United Kingdom, joined Jul 2004, 519 posts, RR: 0
Reply 12, posted (1 year 9 months 1 week 5 days 12 hours ago) and read 7840 times:

Quoting trav110 (Reply 3):

While yesterday's "impact" might not pose much of a risk, I wonder what would be the case if a meteorite the size of the one involved in the Tunguska event were to hit the atmosphere.

For those unfamiliar, the Tunguska event was a meteoroid that exploded upon hitting the atmosphere in 1908 over northern Siberia. The resulting airburst flattened 830 sq. mi of forest, and is estimated to be 1,000 times more powerful than the bomb dropped on Hiroshima.

This was mentioned last night on the BBC. The Tunguska event was described as a 1000 year event, so we're unlikely to witness something like that in our lifetimes. If an airliner was in close proximity to that there would be little chance for it. Of much greater worry for an event like that is it hits the sea causing a Tsunami or even a direct hit onto an urban area. Both of which are likely to be pretty bad.



Flown on A300B4/600,A319/20/21,A332/3,A343,B727,B732/3/4/5/6/7/8,B741/2/4,B752/3,B762/3,B772/3,DC10,L1011-200,VC10,MD80,
User currently offlinemaxpower1954 From United States of America, joined Sep 2008, 1142 posts, RR: 7
Reply 13, posted (1 year 9 months 1 week 5 days 10 hours ago) and read 6878 times:

One of the theories offered after Comet Yoke Peter exploded over the Mediterranean in January 1954 was a meteor. The second Comet midair breakup eliminated that one.

[Edited 2013-02-16 07:17:17]

User currently offlinePHLwok From United States of America, joined May 2007, 515 posts, RR: 0
Reply 14, posted (1 year 9 months 1 week 5 days 9 hours ago) and read 6001 times:

This is one of those things that even if you want to plan for a defense against it, the engineering challenge to do so is practically impossible. These rocks enter into the atmosphere at better than 30,000 mph - how would we engineer a defense against that for an aircraft? Even if one were coming right at the plane and the crew saw it, would they have any time to get out of the way? Yes, one may eventually be downed by one, but there are just so many other challenges in the world that could benefit from attention ahead of this and be a more worthwhile use of limited resources.

User currently offlinethreepoint From Canada, joined Oct 2005, 2170 posts, RR: 9
Reply 15, posted (1 year 9 months 1 week 5 days 6 hours ago) and read 4817 times:

Quoting PHLwok (Reply 14):
Yes, one may eventually be downed by one, but there are just so many other challenges in the world that could benefit from attention ahead of this and be a more worthwhile use of limited resources.

Are we still talking about meteorites or this a general comment on the state of the US-led paranoia against airborne terrorist threats?
'Cause it applies in either case.



The nice thing about a mistake is the pleasure it gives others.
User currently offlinenycdave From United States of America, joined Aug 2010, 547 posts, RR: 1
Reply 16, posted (1 year 9 months 1 week 5 days 4 hours ago) and read 3962 times:

Quoting MrBuzzcut (Reply 2):
If you survive it, start buying lotto tickets.

Actually, you'd never want to buy a lottery ticket -- the odds of having TWO infinitesimally likely events happening to you in ONE lifetime? Well, that's (freakishly lucky)*(unbelievably lucky)!


User currently offlinesoon7x7 From , joined Dec 1969, posts, RR:
Reply 17, posted (1 year 9 months 1 week 5 days 3 hours ago) and read 3650 times:

Quoting skywaymanaz (Reply 11):
When TWA 800 went down this was one of the theories I read that was being considered somewhat seriously at one point. I think they thought it was a once in 100 year event that could happen with an airplane and small meteor fragment colliding.

It indeed did and continued on to hit Charles Schumer in the head. He hasn't been the same since..


User currently offlineLLA001 From Turkey, joined May 2005, 98 posts, RR: 0
Reply 18, posted (1 year 9 months 1 week 4 days 4 hours ago) and read 1921 times:

I was hoping to see an air-to-air shot of the meteorite, I guess there were not many airliners flying nearby the event.

User currently offlineXT6Wagon From United States of America, joined Feb 2007, 3425 posts, RR: 4
Reply 19, posted (1 year 9 months 1 week 4 days 4 hours ago) and read 1870 times:

I think there are better places to worry than the threat of Meteorites. There have been exactly 0 losses do to meteors. I'm willing to bet feral dogs are a bigger threat to aviation than meteorites.

User currently offlineGr8Circle From Canada, joined Dec 2005, 3124 posts, RR: 4
Reply 20, posted (1 year 9 months 1 week 4 days 2 hours ago) and read 1751 times:

Quoting LLA001 (Reply 18):
I was hoping to see an air-to-air shot of the meteorite, I guess there were not many airliners flying nearby the event.

Yeah, I was wondering about that too.....considering that it must have been visible for hundreds of miles around, I'm sure some aircraft pilots must have spotted it......getting it on camera would be that much less likely as they wouldn't have that much time to pull out a camera or phone and shoot it......


User currently offlinebrilondon From Canada, joined Aug 2005, 4389 posts, RR: 2
Reply 21, posted (1 year 9 months 1 week 4 days 1 hour ago) and read 1704 times:

Quoting threepoint (Reply 7):
What are the fragments of the plane called that remain from a midair collision with a meteor(ite)?

Garbage.



Rush for ever; Yankees all the way!!
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