Post by Unum Post by firstname.lastname@example.org Post by Unum
Climate changes is getting so bad, researchers at Columbia University foresee
30 percent of flights being unable to take off by 2050. Since rising
temperatures make the air less dense, heavy planes won't be able to get enough
lift to get in the air. We saw this effect earlier this year, when flights
were grounded at the Phenoix airport due to high temperature.
In reality, the planes were ABLE to take off but not legally.
This is simply because the charts that tell the pilots how much thrust is required at a given temperature did not go up high enough and no one except the air frame manufacturer has the legal authority to extend the charts.
Once the charts were revised, they planes could legally fly.
Oh yeah, dumbass on the internet knows all about it. They just need to
revise the charts! Then the planes could 'legally' fly!
The problem is that big passenger aircraft already take off with full throttle.
Avgas-powered turbines are run to their limit on those things to save money
on build cost -- they are big enough as it is without allowing fully-laden
takeoff on "mil thrust" (80%).
Max throttle when temps are 120F gets something like 20% less thrust
(less dense air at the intake) than normal and around the same less
lift for a given airspeed.
Net result is around 40% more runway is needed and there's a similar effect
on the amount of time between throttle up and wheels up or the amt of
time to clear the airspace allowing for the next takeoff.
They can "define" the safety margin as low as they want. But the physics of
high temps changes some runways from allowing heavies to land/takeoff to
not able to land or take off in the distance.
Unarmed Russian Air Force jet flies over Pentagon, Capitol, CIA, White House
ABC News, 09 Aug 2017 23:45Z
[Nothing to worry about:]
North Korea plans mid-August Guam strike, calls Donald Trump's 'fire and fury'
warning 'load of nonsense'
* North Korea plans to land missiles 30-40km off Guam
* US Defence Secretary says North's actions could "lead to end of regime"
* Donald Trump says US nuclear arsenal more powerful than ever
ABC News, 10 Aug 2017 00:49Z
North Korea says it is working on plans for a missile strike near the US
Pacific territory of Guam, calling President Donald Trump's warning of "fire
and fury" a "load of nonsense".
Mr Trump's unexpected remarks prompted North Korea to say it was considering
plans to fire four intermediate-range missiles to land 30-40 kilometres from
Guam, home to about 163,000 people and a US military base that includes a
submarine squadron, an air base and a Coast Guard group.
Exclusive: U.S. envoys told to be coy on re-engaging in Paris climate deal - cable
US diplomats should duck questions from foreign governments on what it would
take to re-engage the Trump administration in the Paris climate agreement,
according to a diplomatic cable acquired by Reuters. The missive, sent by US
Secretary of State Rex Tillerson to embassies last Friday, tells diplomats
to expect questions such as: "Does the United States have a climate change
policy?". Responses should be vague, the cable advises: for example, the
answer to the question "What is the process for consideration of re-
engagement in the Paris Agreement?", should be "We are considering a number
of factors. I do not have any information to share on the nature or timing
of the process." The cable also says diplomats should make clear the US
wants to help other countries use fossil fuels. You can read the cable in
full here. The Hill also covers the Reuters exclusive.
-- Yeganeh Torbati & Valerie Volcovici, Reuters
Thailand approves flood relief measures worth $48 million
-- Multiple authors, Reuters
Flash floods hit east coast of England
The Guardian, 09 Aug 2017 08:39Z
Don't panic, but a tornado has been spotted off the coast of Wales
Metro, 09 Aug 2017 11:27Z
72 years after the bombing of Nagasaki, there are 15000 nuclear weapons in
Los Angeles Times, 09 Aug 2017 11:28Z
Assaad Razzouk @AssaadRazzouk 09 Aug 2017 11:32Z
Extreme Melt Season Leads to Decade-Long Ecosystem Changes in Antarctic
Polar Desert https://buff.ly/2viFFg6 #climate #science
EU ClimateAdaptation# @EUAdaptation 09 Aug 2017 12:24Z
New @TheLancet study: How #Climate disasters may affect 2/3 of #EU
population by 2100 https://goo.gl/apiQx6 #switch2sendai #iddr2017
[Good flood photo:]
Typhoon leaves blistering temperatures in its wake
The Japan News, 09 Aug 2017 11:41Z
Warm winter increases fuel loads for 'lengthy' bushfire season in Queensland, authorities say
ABC News, 09 Aug 2017 19:54Z
The warmest July on record and precious little rain has set the stage for a
worrying fire season across Queensland, authorities have said.
A BOM report showed the country's average July temperature was at its
highest in more than 100 years of weather recording.
Devastating New Orleans floods cost several officials their jobs
CBS News, 09 Aug 2017 23:56Z
First hurricane of the Atlantic season forms
WEAR, 09 Aug 2017 23:44Z