Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > Space and Astronomy > General Science
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 11-July-2007, 01:29 PM
Ivan Viehoff Ivan Viehoff is offline
Senior Member
 
Join Date: Apr 2004
Location: Chalfont St. Giles, England
Posts: 510
Default Armchair pilots - myth or reality

Another armchair pilot story - you know attaching helium balloons to your chair to go out flying - has emerged. Man Flies 193 Miles in Lawn Chair | LiveScience I thought the old story was an urban myth. This one is on a reputable science site.

I calculate that if man and chair weigh about 80kg, then he needs about 60 m3 of helium to get lift, and that is before considering the weight of the balloons. He also took, according to the story, 20 gallons of water as ballast, that's another 70kg or so, and a parachute. So the total load is now 150kg, say, probably a bit more. Does "105 large helium balloons" really add up to all that. Add on another kg for each balloon, which would be quite light for a balloon strong enough to hold over 1 m3 of helium. Now we have 250kg, about 200m3 of helium, each ballon is a little over 2 m3. That would mean that the cloud of balloons above him occupies a cube roughly 6 m each side, that is the size of about 3 double-decker buses.

Baloney?
Reply With Quote
  #2 (permalink)  
Old 11-July-2007, 01:51 PM
Maksutov's Avatar
Maksutov Maksutov is offline
Honored Member
 
Join Date: Jan 2004
Location: Fifth corner of the Earth
Posts: 16,731
Default Re: Armchair pilots - myth or reality

Not only reality, but ToSeeked.
__________________
A person's name, or a mark representing it, as signed personally or by deputy, as in subscribing a letter or other document.
Reply With Quote
  #3 (permalink)  
Old 11-July-2007, 03:35 PM
NEOWatcher's Avatar
NEOWatcher NEOWatcher is offline
Senior Member
 
Join Date: May 2005
Location: the E(e)rie coast
Posts: 7,926
Default

Quote:
Originally Posted by Maksutov View Post
Not only reality, but ToSeeked.
Not only that, but that thread includes some detailed analysis, and includes a picture of him in the air that would answer this OP.
__________________
Numbers are not case sensitive. (me)
Reply With Quote
  #4 (permalink)  
Old 11-July-2007, 03:43 PM
Fazor's Avatar
Fazor Fazor is offline
Senior Member
 
Join Date: Oct 2006
Location: Near Columbus, Ohio
Posts: 5,362
Default

Well, and technically this man was "tooseeked" too in a way, as he's not the first real armchair pilot. The story about the guy in (San Fran area? Or was it San Diego? Or none of the above? Too lazy to look it up) that used weather balloons to accomplish his flight was quite real also. And so were the repercussions from the FAA for inproperly occupying restricted airspace (IIRC, he drifted over an airport).
__________________
I'm like one of those idiot savants...well, except for the savant part.
Reply With Quote
  #5 (permalink)  
Old 11-July-2007, 04:17 PM
snabald's Avatar
snabald snabald is offline
Senior Member
 
Join Date: Jan 2004
Location: Louisville, KY
Posts: 355
Send a message via AIM to snabald
Default

The first arm chair pilot committed suicide.

Urban Legends Reference Pages: Up, Up, and Away!
Reply With Quote
  #6 (permalink)  
Old 11-July-2007, 06:25 PM
trinitree88 trinitree88 is offline
Senior Member
 
Join Date: Sep 2005
Location: Massachusetts
Posts: 2,479
Default

Quote:
Originally Posted by snabald View Post
The first arm chair pilot committed suicide.

Urban Legends Reference Pages: Up, Up, and Away!
Snabald. Which is a shame. One of my heroes. The guy has Chutzpah. I want one of those bicycle-train human powered balloons from the late 1800's. A former student held the women's world record for human powered flight out of MIT for a while...great kid. pete

see Lois McCallin;MIT Daedalus - Wikipedia, the free encyclopedia
__________________
A third rate theory forbids
A second rate theory explains after the fact
A first rate theory predicts...A. Lomonosov
Reply With Quote
  #7 (permalink)  
Old 21-July-2007, 06:42 PM
publiusr publiusr is offline
Senior Member
 
Join Date: Feb 2005
Posts: 4,292
Default

There was a movie "Lawnchair Larry"--but that was set in the UK IIRC
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
When do neutrinos, black holes, quarks, dark matter, and dark energy become real? Nereid Questions and Answers 364 16-September-2007 12:26 AM
Spooky Matter at a Distance EvilEye Questions and Answers 150 02-September-2007 10:01 AM
Some comments about "Ultimate Reality" DoctorDick Against the Mainstream 23 01-November-2002 03:21 AM
The reality problem heusdens Against the Mainstream 3 23-October-2002 10:16 PM


All times are GMT. The time now is 05:32 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.0.0
©  2006 Bad Astronomy and Universe Today