On 10/05/2012 3:14 PM, James Holsenback wrote:
> On 05/10/2012 10:02 AM, Stephen wrote:
>> On 10/05/2012 2:47 PM, James Holsenback wrote:
>>> OK, thinking about joining the circus. I mean how hard can it be to get
>>> shot out of a cannon. After all ... a cannon ball can do it?
>>
>> First thing to do is pack your trunk. Just like Nellie.
>>
>
> Hmmm ... could work since I'll work for peanuts ;-)

Last year while driving through Roswell. I saw people holding up signs 



-- 
Regards
     Stephen

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On Thu, 10 May 2012 09:47:41 -0400, James Holsenback wrote:

> OK, thinking about joining the circus. I mean how hard can it be to get
> shot out of a cannon. After all ... a cannon ball can do it?

http://latimesblogs.latimes.com/showtracker/2011/12/apologetic-
mythbusters-talk-about-cannonball-accident-.html

:)

Jim

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On 5/10/2012 6:47 AM, James Holsenback wrote:
> OK, thinking about joining the circus. I mean how hard can it be to get
> shot out of a cannon. After all ... a cannon ball can do it?

I guess the trick is doing it more than once.

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> OK, thinking about joining the circus. I mean how hard can it be to get
> shot out of a cannon. After all ... a cannon ball can do it?

It's not that hard.  It's the landing that's hard.

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Le 11/05/2012 13:56, Francois Labreque a écrit :
> Le 2012-05-10 09:47, James Holsenback a écrit :
>> OK, thinking about joining the circus. I mean how hard can it be to get
>> shot out of a cannon. After all ... a cannon ball can do it?
> 
> It's not that hard.  It's the landing that's hard.
> 
The initial acceleration must be done with appropriate explosive.
For instance, the speed of deflagration might greatly varies with the
kind of explosive and such speed might prove to be deadly.

For human-cannon, a "slow" explosive is recommended, with a suitable
padding below the foot to absorb the initial push. Aorta might get
ruptured from a too strong acceleration.

The landing is then the remaining issue: it's plain gravitational in
action, the higher you get, the faster you fall.

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>> It's not that hard.  It's the landing that's hard.
>>
> The initial acceleration must be done with appropriate explosive.
> For instance, the speed of deflagration might greatly varies with the
> kind of explosive and such speed might prove to be deadly.

I believe Julies Verne wrote a book around the idea of sending people to 
the Moon by firing them [or rather, some kind of craft containing them] 
out of a cannon.

> The landing is then the remaining issue: it's plain gravitational in
> action, the higher you get, the faster you fall.

Terminal velocity, anyone?

Air drag increases with velocity, until eventually gravitational forces 
and air drag reach equilibrium.

You could probably survive the landing if you had a parachute or 
something soft to land on. :-P

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Le 11/05/2012 16:07, Invisible a écrit :
>>> It's not that hard.  It's the landing that's hard.
>>>
>> The initial acceleration must be done with appropriate explosive.
>> For instance, the speed of deflagration might greatly varies with the
>> kind of explosive and such speed might prove to be deadly.
> 
> I believe Julies Verne wrote a book around the idea of sending people to
> the Moon by firing them [or rather, some kind of craft containing them]
> out of a cannon.

Yep, "De la Terre à la Lune"

> 
>> The landing is then the remaining issue: it's plain gravitational in
>> action, the higher you get, the faster you fall.
> 
> Terminal velocity, anyone?

If you went high enough to get terminal velocity on ground, you went too
high for a circus.

The trick for a circus is to fly long, not high. Air resistance is good
for slowing the horizontal speed, and not too high is good for not too
much vertical speed. A costum like the flying squirrel is a good one for
human-cannon.

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>> I believe Julies Verne wrote a book around the idea of sending people to
>> the Moon by firing them [or rather, some kind of craft containing them]
>> out of a cannon.
>
> Yep, "De la Terre à la Lune"

No, I haven't read it. I just saw something about it on the Internet. ;-)

>> Terminal velocity, anyone?
>
> If you went high enough to get terminal velocity on ground, you went too
> high for a circus.
>
> The trick for a circus is to fly long, not high. Air resistance is good
> for slowing the horizontal speed, and not too high is good for not too
> much vertical speed. A costum like the flying squirrel is a good one for
> human-cannon.

Yeah, that sounds about right...

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> The trick for a circus is to fly long, not high. Air resistance is good
> for slowing the horizontal speed, and not too high is good for not too
> much vertical speed.

Indeed, it's mainly the velocity perpendicular to what you land on 
that's the problem, you can also have a downward slope to land on to 
soften the impact...

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On 5/10/2012 9:04, Kevin Wampler wrote:
> On 5/10/2012 6:47 AM, James Holsenback wrote:
>> OK, thinking about joining the circus. I mean how hard can it be to get
>> shot out of a cannon. After all ... a cannon ball can do it?
>
> I guess the trick is doing it more than once.

"Wow! This is great!"

"Yeah, hot air balloon rides are fun."

"I'd like to try it without the balloon!"

"Try what? Plummeting? You could try it once, I guess."

-- 
Darren New, San Diego CA, USA (PST)
   "Oh no! We're out of code juice!"
   "Don't panic. There's beans and filters
    in the cabinet."

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