PSA: Supersonic skydive from 120,000ft. Live online this afternoon
I watched a thing about the guy that had the previous record (set in the 50’s I think).
He said that when he jumped there was no sound (as there was no air to cause friction) and no point of reference so he wasn’t sure if he was actually being pulled back towards the earth for a few minutes.
How terrifying does that sound?Posted 5 years ago
he jumps out of a helium filled weather-ballon.
Because the air is so thin up there, he’ll go supersonic before hitting terminal velocity. The justification is he’s testing a space suit to be used as emergency evacuation from a space station. Can you imagine? Problem in the space station, just jump out and head home!
There’s a CGI animation of it somewhere, hang on…Posted 5 years agoD0NKSubscriber
Prepare myself to be ridiculed for physics fail but…
Because the air is so thin up there, he’ll go supersonic before hitting terminal velocity.
so what happens when he gets to “thick” air? gently slows down?
So today he’s still inside the atmosphere, in the space station scenario what about re-entry? I hear it can get quite warm.
watching that video makes me think he’s missing the opportunity of the biggest bungee jump in the world (ever!) also there seems to be a lot that could go wrong, like something snagging, fancy PC freezing up, getting blown off course and jumping into the sea etc etcPosted 5 years ago
How will he go supersonic just by falling? surely when the air is that thin the speed of sound is much faster. I mean ok, that’s the outcome of the underlying physics. but surely the same compressibility characteristics which limit the speed of sound would also limit the speed at which the guy falls. No?Posted 5 years ago
“so eggheads I’ll be doing supersonic speeds in a tinfoil suit how do I slow down?”
“well we expect the thicker air will slow you down gradually”
“ah, you expect, ok cool”
“Well look at it this way, if thicker air doesn’t slow you down, then it is unlikely that the thicker ground would slow you down either. So either way, you’ll be ok”Posted 5 years agoMidlandTrailquestsGrahamMember
It almost make me feel guilty for buying supermarket own brand “energy” drinks at 25p instead of paying £1.20 for identical stuff in a Red Bull can.
On a bit of a tangent, I heard that the cost of making the Apollo 13 film was more than it would have cost to actually fly to the moon.Posted 5 years ago
Is there any truth in that ?
Is it possible that there might one day be a Red Bull moon landing if they could sort out the sponsorship and distribution deals ?cookeaaSubscriber
I reckon Redbulls turnover is directly linked to the sales of Vodka anyway, hence an economic downturn = more people looking to deal with their problems by getting smashed (whilest staying alert) means more Redbull/Vodka being ordered = more funding for people to jump out of planes, Race F1 cars and backflip Motorbikes/MTBs/BMXes…
I don’t drink it because it tastes like Rat’s piss, I’m an adult and I aleady get most of my caffine intake from Coffee, but I applaud their investments in the Radnessand/or stupidity of others…
It’s the other Energy drinks brands (Monster/Relentless) who are truely evil, they take their profits and only invest a bit in putting branded baseball caps and stickers on various Gnarr meisters…
I heard that the cost of making the Apollo 13 film was more than it would have cost to actually fly to the moon.
That’s only because Tom hanks insisted on drinking premium branded energy drinks throughout shooting…Posted 5 years agoellipticMember
How will he go supersonic just by falling? surely when the air is that thin the speed of sound is much faster.
Speed of sound at altitude depends mostly on the temperature… the effects of lower density and pressure cancel each other out pretty much.
And the issue with re-entry from the ISS is much more about the orbital speed (~28000kph) than the altitude (~350km)…per kilo of mass you need to shed ~3.5MJ of gravitational potential energy to come to a stop on the ground, but nearly ten times that (~30MJ) of kinetic.
[/physics geek mode]
Anyway… Cam Zink pretty much seems to have this whole thing covered 🙂Posted 5 years agoMidlandTrailquestsGrahamMember
A little bit of internet research and it looks like $3 billion to land on the moon and $0.3 billion for the most expensive films.
Doesn’t look likely with current technology then.Posted 5 years ago
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