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Forum:	Mercury - Gemini - Apollo
Topic:	Apollo 14 and 17 heat flow experiments

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Your Reply: HTML is ON UBB Code is ON Smilies Legend	[QUOTE]Originally posted by Jim Behling: [B] [QUOTE]Originally posted by Philip: [b]...exact same hardware flown twice?[/b][/QUOTE] They would not have returned the hardware to Earth to be reused. Not enough room for such.[/B][/QUOTE]
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<table border=0 cellpadding=0 cellspacing=0 width="600"><TR><td bgcolor="#000000"><TABLE BORDER=0 cellpadding=4 border=0 cellspacing=1 WIDTH="100%"><TR bgcolor="#660000"><TD COLSPAN=2><CENTER>T O P I C     R E V I E W</CENTER></TD></TR><TR bgcolor="#494949"><TD valign=top>Philip</TD><TD>Do we know if the Heat Flow Experiment onboard Apollo 14 command module "Kitty Hawk" and onboard Apollo 17 command module "America" were exactly the same set-up? In other words, exact same hardware flown twice?</TD></TR><TR bgcolor="#333333"><TD valign=top>Jim Behling</TD><TD>Are you asking whether the same actual hardware flew twice or a duplicate set flew on the second mission?</TD></TR><TR bgcolor="#494949"><TD valign=top>SpaceAholic</TD><TD>If the same (repurposed) hardware I don't know but the configuration was not identical, the overlay for displaying radial measurements was modified from four 90 degree quadrants to eight 45 degree sectors (presumably to increase reading accuracy). </TD></TR><TR bgcolor="#333333"><TD valign=top>Jim Behling</TD><TD> <BLOCKQUOTE>quote:<HR>Originally posted by Philip: ...exact same hardware flown twice?<HR></BLOCKQUOTE> They would not have returned the hardware to Earth to be reused. Not enough room for such.</TD></TR><TR bgcolor="#494949"><TD valign=top>Robert Pearlman</TD><TD>The Heat Flow and Convection Demonstration hardware was conducted aboard the command module and according to the <A HREF="https://www.hq.nasa.gov/alsj/RP-1994-1317.pdf" TARGET=_blank>Catalog of Apollo Experiment Operations</A> was returned to Earth by both missions. Ron Evans <A HREF="https://historical.ha.com/itm/explorers/space-exploration/apollo-17-flown-heat-flow-and-convection-experiments-parts-directly-from-the-personal-collection-of-mission-command- module-pilot/a/6033-41167.s" target="AirLock">retained hardware</A> from the Apollo 17 experiment (in addition to the Omega Speedmaster he used as a timing device) among his mementos.The experiment catalog notes the differences between the Apollo 14 and Apollo 17 packages and implies they used different hardware: "Some changes were made from the A-14 model to this [A-17] unit..."Comparing photos of the two, there appears to be some minor layout differences (a better image of the Apollo 14 experiment would help):<center><a href="http://www.collectspace.com/review/apollo_heat_flow_convection_experiment01-lg.jpg" target="AirLock"><img src="http://www.collectspace.com/review/apollo_heat_flow_convection_experiment01.jpg" width="400" height="453" border="0"></a><a href="http://www.collectspace.com/review/apollo_heat_flow_convection_experiment02-lg.jpg" target="AirLock"><img src="http://www.collectspace.com/review/apollo_heat_flow_convection_experiment02.jpg" width="400" height="269" border="0"></a></center></TD></TR><TR bgcolor="#333333"><TD valign=top>SpaceAholic</TD><TD>Both were returned (integrated into the CM). Here is Kitty Hawk DAC footage of the experiment:<center><iframe width="400" height="225" src="https://www.youtube.com/embed/sNEsv6e7q7k" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>

Jim Behling

Sorry, I thought it was the lunar heat flow experiment.

garymilgrom

Me too Jim.

Dietrich

The same photo of the Apollo 14 experiment can be found in better resolution in NASA TM-X 64735 "Heat Flow and Convection Demonstration (Apollo 14)", available on the NASA Technical Report Server, Figure 1 page 7.

Philip

Thanks for all the superb and interesting replies.
It looks like the A14 Kitty Hawk HFE didn't come with an Omega Speedmaster...

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