Space engines: fast or slow? - Honda Motorcycles - FireBlades.org
Off-Topic Discussion of anything that doesn't fit anywhere else. If it's related to motorcycles in any way, DO NOT post it here. Post it in General Discussion or a more specific forum.

User Tag List

 
LinkBack Thread Tools
post #1 of 8 Old 11-15-2004, 8:57 AM Thread Starter
 
Join Date: 06-28-2004
Posts: 2,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
         
Space engines: fast or slow?

Here's a link to a BBC website with two interesting and contrasting approaches to propulsion: the speedy scramjet and the slow but long duration ion drive in the EU moonprobe.

http://news.bbc.co.uk/1/hi/sci/tech/default.stm
oldfogey is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 11-15-2004, 9:09 AM
 
Baketech's Avatar
 
Join Date: 02-10-2002
Location: Hoosierland, USA
Posts: 11,098
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 42
                   
Re: Space engines: fast or slow?

Have read a bit about the Xenon on the Moonprobe.....but haven't been able to determine what the primary power source is?

Anyone know....

Sith Apprentice
CBR929 - VFR800 - VFR800
"There is a grey blur, and a green blur. I try to stay on the grey one..." - Joey Dunlop
Baketech is offline  
post #3 of 8 Old 11-15-2004, 9:16 AM Thread Starter
 
Join Date: 06-28-2004
Posts: 2,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
         
Re: Space engines: fast or slow?

If you're asking the question, I'm missing something, but "The energy to feed the system comes from the solar panels".
oldfogey is offline  
Sponsored Links
Advertisement
 
post #4 of 8 Old 11-15-2004, 9:19 AM
 
Baketech's Avatar
 
Join Date: 02-10-2002
Location: Hoosierland, USA
Posts: 11,098
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 42
                   
Re: Space engines: fast or slow?

Quote:
Originally Posted by oldfogey
If you're asking the question, I'm missing something, but "The energy to feed the system comes from the solar panels".
So the entire system is solar, or is there a fuel cell....?

Sith Apprentice
CBR929 - VFR800 - VFR800
"There is a grey blur, and a green blur. I try to stay on the grey one..." - Joey Dunlop
Baketech is offline  
post #5 of 8 Old 11-15-2004, 9:23 AM Thread Starter
 
Join Date: 06-28-2004
Posts: 2,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
         
Re: Space engines: fast or slow?

Up to 26 October, and the 289th engine pulse, the SMART-1 solar-electric propulsion system has accumulated a total 'on' time of nearly 3648 hours, consumed about 58.8 kilograms of xenon fuel and gave the spacecraft a speed of about 2737 metres per second (nearly 10 000 kilometres an hour!)

So I presume power for the ioniser comes from the solar panels and the craft carries a xenon gas "fuel" tank which pulses infrequently. Slow acceleration to a high speed.
oldfogey is offline  
post #6 of 8 Old 11-15-2004, 2:29 PM
 
CBR929RE's Avatar
 
Join Date: 05-06-2004
Location: Randolph, MA
Age: 39
Posts: 12,773
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 39
                 
Send a message via AIM to CBR929RE
Re: Space engines: fast or slow?

I thought the X project was stopped with the one that could do Supersonic manuevers (the one the F-22 Raptor used as its basis), or was that a different X project?

if you can't convince them, confuse them.
CBR929RE is offline  
post #7 of 8 Old 11-15-2004, 3:31 PM
 
Join Date: 05-07-2003
Posts: 3,599
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: Space engines: fast or slow?

Interesting stuff: http://nmp.jpl.nasa.gov/ds1/tech/ionpropfaq.html
2OHOH2 is offline  
post #8 of 8 Old 11-17-2004, 8:20 AM Thread Starter
 
Join Date: 06-28-2004
Posts: 2,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
         
Re: Space engines: fast or slow?

Update for yesterday's successful test:

http://news.bbc.co.uk/1/hi/sci/tech/4018117.stm
oldfogey is offline  
Reply

  Lower Navigation
Go Back   Honda Motorcycles - FireBlades.org > Other > Off-Topic

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda Motorcycles - FireBlades.org forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
A real "free energy" machine? Zeeman Off-Topic 29 11-16-2004 5:24 AM

Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome