collectSPACE: Messages - Reply to Topic

Space News
space history and artifacts articles

Messages
space history discussion forums

Sightings
worldwide astronaut appearances

Resources
selected space history documents

Websites
related space history websites

Forum:	Satellites - Robotic Probes
Topic:	NASA's Phoenix mission to Mars

Want to register?

Who Can Post?	Any registered users may post a reply.
About Registration	You must be registered in order to post a topic or reply in this forum.
Your UserName:
Your Password:	Forget your password?
Your Reply: HTML is ON UBB Code is ON Smilies Legend	[QUOTE]Originally posted by Robert Pearlman: [B]<BLOCKQUOTE>[i][b]Will Phoenix's descent thrusters [URL=http://fawkes3.lpl.arizona.edu/faq.php]alter the composition[/URL] of its landing site?[/b] Altering the chemistry of our landing site due to our thruster exhaust is unavoidable. The Phoenix Lander uses hydrazine, a hypergolic propellant that turns into ammonia during combustion. So essentially, we are spraying the surface with ammonia and a small amount of hydrazine that was not combusted. The way we get around that is by 1) knowing that we are going to be producing ammonia and 2) by designing the wet chemistry cells to carefully quantify the amount of ammonia in the regolith. We then use this information to interpret our other results.[/i]</BLOCKQUOTE>[/B][/QUOTE]
Options	Disable Smilies in This Post. Show Signature: include your profile signature. Only registered users may have signatures.
*If HTML and/or UBB Code are enabled, this means you can use HTML and/or UBB Code in your message.

If you have previously registered, but forgotten your password, click here.

<A HREF="http://www.collectspace.com/ubb/Forum33/HTML/000439.html" target=_blank> *** Click here to review this topic. ***</A>

Contact Us | The Source for Space History & Artifacts

Ultimate Bulletin Board Version 5.47a