From:
That's truly historic, only 70 years behind the Russians.
Of course NASA helped a little.
What's it for?
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
Well no, tehre is Ariane
Really?
Bombs for trump?
'Five cubesats and one non-deployable scientific experiment went up on "Onward and Upward."'
Am 06.09.26 um 12:50 schrieb john larkin:
What is that NASA thing? Do they still build stuff or do they channel only $$$ to DT's friends nowadays?
The V2 reached 100 Km, the border to space. A few Km higher is enough for a LEO. Might have been sufficient to start it near equator instead of Peenemünde to get another 40,000Km / 24h for free.
That was 80 years ago.
BTW, the Ruzzians also got some help from whom they looted from von Braun's group.
Gerhard
That's silly. Werner didn't invent the rocket. He just attacked London with some.
Hey, I found an article that mentions the NASA connection:
So many people have lost their tiny minds over Trump. He's a great President for that alone.
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
So many people have lost their tiny minds over Trump. He's a great President for that alone.
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
Article says it was launched from northern Norway, which probably puts it inside the Arctic Circle
To be fair, they probably used NASA and its data to establish time-dependent clearance for the launch as well as the orbit itself, to avoid a collision with all the junk up there. That's something becoming more and more critical by the day.
When crashed and unexploded German V-1 components were salvaged in Britain and sent to Wright Field in July 1944, the U.S. military rapidly reverse-engineered them in a matter of weeks. They split the production contracts among major American manufacturers:
The Pulsejet Engine: Ford Motor Company was given the task of reverse-engineering and manufacturing copies of the German Argus As 014 pulsejet. Ford's successful replica was designated the Ford PJ31.
The Airframe: Republic Aviation (and later Willys-Overland) was contracted to manufacture the airframe.
The resulting American copy of the V-1 was called the JB-2 Loon, and thousands were ordered in preparation for the planned invasion of Japan.
Both that and the V1 had a maximum range of aprox 150 miles, which is hardly anything. No wonder they had to be dropped from long-range aircraft.
Seems you are one of them? LOL
He's unmatched at causing mayhem and bankrupting your country, that's for sure. He'll be remembered as the most inept US president in history.
Jeroen Belleman
Going up 100km is not enough. You also need to miss the earth when you fall back. That's by far were most of the energy goes.
Jeroen Belleman
Jan Panteltje snipped-for-privacy@comet.invalid schreef: |----------------------------------------------------------| |"[. . .] | |>That's truly historic, only 70 years behind the Russians.| | | |Well no, tehre is Ariane | |[. . .]" | |----------------------------------------------------------|
No Ariane rocket is launched from European soil. (S.
In a thread in sci.electronics.design, about a satellite launch, most people would rather talk about Trump.
They must dream about him all night.
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
They're called 'nightmares'.
Off-topic subjects aren't all that unusual here, you know quite well.
Do you *really* believe only 18 US service members lost their lives in your Iran war? Were all these fired-on US bases mostly empty perhaps?
Jeroen Belleman
What's unusual here is people who have something intelligent to say about electronic design.
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
The 18 is most likely correct, as it's just about impossible to keep such a secret in the US.
The people in those bases know they are targets, so they don't stray from cover much.
Joe
We shall see. It's abundantly clear that Trump gravely underestimated Iran's ability to fight back.
Jeroen Belleman
Suborbital flight is further from orbit than you might think. Reaching
100km of altitude requires 0.98MJ/kg (100km · 9.81m/s/s), a Δv of 1.4km/s (E/m = ½v²). Mean orbital speed v ≈ √(GM/a). Earth weighs M = 5.97 × 10²⁴ kg, G = 6.67 m³/kg/s/s, and a in this case is the radius of the earth (6371km) plus our height of 100 km. This works out to 7.85km/s, a kinetic energy of 30.8MJ/kg.So, suborbital flights to the von Kármán line, as game-changing as they would have been had decent guidance systems existed in 01942, are about
18% of the way to orbit in Δv terms, or 3% of the way in energy terms.In particular, the V-2 was designed for 75%-ethanol 25%-water fuel with a cryogenic liquid-oxygen oxidizer (“Brennstoff”). Pure ethanol has
30MJ/kg, so it cannot reach orbit. Carrying the oxygen cuts that in half or more. The V-2 engines needed to be completely redesigned for more energetic rocket fuels. So trying to orbit a payload with a V-2 wouldn’t be any more effective than trying to climb a ladder to the moon.To be fair, by the end of the war, the Germans had built rockets before the end of the war that ran on various more exciting mixes like C-Stoff/T-Stoff and S-Stoff (with some reductant).
Kragen
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