Brooklyn Father And Son Launch Homemade Spacecraft

Adair writes "A father and son team from Brooklyn successfully launched a homemade spacecraft nearly 19 miles (around 100,000 feet) above the Earth's surface. The craft was a 19-inch helium-filled weather balloon attached to a Styrofoam capsule that housed an HD video camera and an iPhone. The camera recorded video of its ascent into the stratosphere, its apogee where the balloon reached its breaking point, and its descent back to earth. They rigged a parachute to the capsule to aid in its return to Earth, and the iPhone broadcast its GPS coordinates so they could track it down. The craft landed a mere 30 miles from its launch point in Newburgh, NY, due to a quick ascent and two differing wind patterns. The pair spent eight months researching and test-flying the craft before launching it in August. Columbia University Professor of Astronomy Marcel Aguera said, 'They were very good but also very lucky.'"

Comments

19 miles isn't "space"

[stjobe]

19 miles is still in the stratosphere.

Re:19 miles isn't "space"

[mcornelius]

Actually, there is. It's called the Kármán line, and it's 62 miles or 100 kilometers.

Re:19 miles isn't "space"

[Anonymous Coward]

This is essentially a bureaurcratic definition. 100 km serves as a convenient line for dividing air travelers from astronauts, but there is no physical change in the atmosphere at that point. It is just an arbitrary line in the sky.

It's not arbitrary, it's a practical definition. At 100km in an aircraft, you need to fly at orbital velocities just to stay aloft, so effectively you need a spacecraft instead.

Re:19 miles isn't "space"

[Lobachevsky]

The Karman line is the defined boundary for space. Your claim that "there is no clear 'line' ..." can applied to most anything, including boundaries between land and sea.

There is no clear line, or particular grain of sand, that divides land from sea. There is a wetness gradient, where you go from completely dry, to moist sand, to ever more moist sand, to fairly wet sand, to very wet sand, to sand with frothy puddles, to turbid water, ankle high water, knee high water... you get the drift.

Everything in nature lacks a clear boundary - due to planck's constant and such. All you can say is, with error bars, what the boundary is. We know the coastal boundaries of nations, within +/- 25m error. Similarly, the Kamran line is a decent boundary for when space stars from the Earth's surface. Is it exact to the millimeter? No, doesn't have to be. But the property is that buoyant crafts (bouyant due to density or due to propulsion with wings) cannot exist at the Kamran line. Just as the coastal boundaries of nations, while not defining the exact grain of sand land stops and sea begins, generally define the point at which you're dry or wet, within +/- 25m.

Re:This is not a spacecraft

[Teancum]

And there is no improvement that can possibly be made to a helium balloon that can make it actually go any higher than Earth's atmosphere.

Yes there is. Attach rockets.

What is so sad is that joke of a "spacecraft" this gets a strong mention in the press (and on Slashdot) while a real spacecraft... using a helium balloons as a 1st stage to get altitude is being used in a genuinely innovative fashion for something new with rocketry. See:

http://www.arcaspace.com/en/home.htm

ARCA was successful with their last launch attempt.... which was launched yesterday. No video links yet, but the official page says that the launch attempt was successful. Yeah, attaching rockets to a balloon is something being considered.

FYI, ARCA (Aeronautics and Cosmonautics Romanian Association) is using this flight as a part of the testing regime in order to get TO THE MOON! They are a Google Lunar X-Prize team who is making some real progress and sending stuff up. They are also doing it on a budget of a mostly volunteer team in Eastern Europe. The main reason for using the balloons is not really the altitude issue, but that does simplify the rocket nozzle designs as it can be tuned to a near vacuum rather than having to deal with atmospheric flight (it makes a difference). Also, if something goes "boom", that explosion happens high up in the sky and over the Black Sea instead of over a populated area, making the issues of a launch pad much less of a problem.

Re:This again?

[nomadic]

You sure told that 8 year old. Kudos.

Re:Need More Science

[wesley96]

What the grandparent probably meant by 'stay afloat' is maintaining altitude for a considerate amount of time. SSO and X-15 reached the 100km point, but had to come down relatively quickly because, once fuel runs out, you just fall to the gravity well.

If you're in the atmosphere, you can glide without using all that much fuel. You can't do that in space - certainly not at 100km altitude. In order to 'stay afloat', you need to do orbital velocity.

Of course, since it's not like atmosphere abruptly ends somewhere, the 'where to draw the line' can be a bit arbitrary, but the currently chosen one isn't impractical.