Things you always wanted to know the answer to [Vol. 4]
Discussion
Clockwork Cupcake said:
Doofus said:
If an airline filled the unused space in the cargo hold of, say, a 747 with helium, how much fuel would they save on a flight from LHR to JFK?
Negligible, I would think. Imagine the volume-to-weight ratio of an airship and then compare it to a 747.A 747 is, what, a couple of hundred tonnes and a good chunk smaller than a hot air balloon or blimp weighing a tiny fraction of that.
Doofus said:
If an airline filled the unused space in the cargo hold of, say, a 747 with helium, how much fuel would they save on a flight from LHR to JFK?
According to Google.A 747-400 as a freighter can hold 736m cubed of cargo
Helium is 1.107 kg lift per cubic metre.
I don't think 809kg of lift is going to make much difference when a 747 weights 174 tons
talksthetorque said:
Why does one PHer fixate on a young woman in a tight Lycra outfit, yet another stares at a woman who would be a natural in a walking around in circles( single direction) competition?
Cant speak for the guy with the pirate peg leg fetish.But cycling girl has impressive size boobs for her 5'6 height
Edited by S1KRR on Sunday 1st September 13:16
gregs656 said:
Thesprucegoose said:
how do scrap yards work, as they have scrap sitting around for decades, surely better to just sell it?
They do sell it. Constant churn at scrapyards. I guess if it was something of particular value it might hang around.
Or has TSG spotted a few cars at his local galvanised graveyard that have stuck around?
valiant said:
glazbagun said:
I similarly used to notice the same woman on my commute every few days because she had one leg longer than the other and thus an unusual gait. In reality, it's highly likely that you've seen most of the people on your commute multiple times, they just aren't very memorable.
Commuters are creatures of habit and are borderline robots. They tend to catch the same train, stand at the same spot in order to sit in the same carriage and hope to get their favourite seat or stand in the same place.You’re probably seeing the same people every single day but because you’re not focused on them or engaging with them, you and your subconscious are ignoring them. Only when you engage with them (Heaven forfend!)or notice something out of the ordinary about them will you subsequently remember them.
S1KRR said:
According to Google.
A 747-400 as a freighter can hold 736m cubed of cargo
Helium is 1.107 kg lift per cubic metre.
I don't think 809kg of lift is going to make much difference when a 747 weights 174 tons
Plus empty cargo space costs money... Fill that space with revenue generating cargo.A 747-400 as a freighter can hold 736m cubed of cargo
Helium is 1.107 kg lift per cubic metre.
I don't think 809kg of lift is going to make much difference when a 747 weights 174 tons
That's one of the reasons luggage on budget airlines is so expensive they want to retain hold space for cargo. The budget business model relies on it... That and they're simply trying to wring every last penny they can out of you.
vonuber said:
Except the vast majority of casualties usually occur when one side flees and are hacked down in the purusit.
Which doesn't happen. Pursuing a routing enemy is extremely difficult and your own soldiers will simply give up when they realise the enemyhais routed. Disease and starvation kills far more combatants than direct combat.
captain_cynic said:
vonuber said:
Except the vast majority of casualties usually occur when one side flees and are hacked down in the purusit.
Which doesn't happen. Pursuing a routing enemy is extremely difficult and your own soldiers will simply give up when they realise the enemyhais routed. Disease and starvation kills far more combatants than direct combat.
In ancient Roman battles in particular the losing side would suffer far more casualties than the winning side. Frontal injuries were usually relatively minor and in the bits the shield couldn't protect. The instantly fatal injuries were often in the back.
captain_cynic said:
Plus empty cargo space costs money... Fill that space with revenue generating cargo.
That's one of the reasons luggage on budget airlines is so expensive they want to retain hold space for cargo. The budget business model relies on it... That and they're simply trying to wring every last penny they can out of you.
Very little, if any, cargo goes on an EasyJet/Ryanair flight. They charge loads to keep the cost of the turnaround to a minimum by needing fewer ground handling staff and less time to get the flight in and out. That's one of the reasons luggage on budget airlines is so expensive they want to retain hold space for cargo. The budget business model relies on it... That and they're simply trying to wring every last penny they can out of you.
Dr Jekyll said:
It did in swords and shields days. Soldiers would oppose each other in a shield wall mostly concentrating more on protecting themselves than slashing the guy opposite. Every so often an aggressive bloke would break through and usually get cut to pieces. Occasionally one would hold his ground, once a few of one army did this the other would decide the shield wall wasn't holding and they were in danger of getting surrounded, so they'd run and yes, be hacked down.
In ancient Roman battles in particular the losing side would suffer far more casualties than the winning side. Frontal injuries were usually relatively minor and in the bits the shield couldn't protect. The instantly fatal injuries were often in the back.
Very interesting, thanks. In ancient Roman battles in particular the losing side would suffer far more casualties than the winning side. Frontal injuries were usually relatively minor and in the bits the shield couldn't protect. The instantly fatal injuries were often in the back.
In more modern combat these
mowed down thousands of troops, day and night. Most attackers hurled themselves in waves at the guns. Very, very few, will have been killed once they started to runDr Jekyll said:
It did in swords and shields days. Soldiers would oppose each other in a shield wall mostly concentrating more on protecting themselves than slashing the guy opposite. Every so often an aggressive bloke would break through and usually get cut to pieces. Occasionally one would hold his ground, once a few of one army did this the other would decide the shield wall wasn't holding and they were in danger of getting surrounded, so they'd run and yes, be hacked down.
In ancient Roman battles in particular the losing side would suffer far more casualties than the winning side. Frontal injuries were usually relatively minor and in the bits the shield couldn't protect. The instantly fatal injuries were often in the back.
That's usually how battles work.In ancient Roman battles in particular the losing side would suffer far more casualties than the winning side. Frontal injuries were usually relatively minor and in the bits the shield couldn't protect. The instantly fatal injuries were often in the back.
What wouldn't happen is the victorious army pursuing the defeated one because the pursuing army would lose cohesion and you would just end up with two routed armies. A good general wouldn't permit it because they'd lose control of their own force.
Even today with professional armies, radio communication, motorised transport and so on, it's still risky to send out anything beyond a skirmishing force... Especially as a routed modern enemy can quickly regroup and counter attack whilst your forces are spread out in pursuit.
So being hacked to death whilst running away was not really a big killer, preferable to staying and getting hacked to death. Especially not compared to sepsis, gangrene, influenza, et al.
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