Saturn V Auxiliary Propulsion System (APS)

Space News
space history and artifacts articles

Messages
space history discussion forums

Sightings
worldwide astronaut appearances

Resources
selected space history documents

collectSPACE: Messages

Hardware & Flown Items

profile | register | preferences | faq | search

next newest topic | next oldest topic

Author	Topic: Saturn V Auxiliary Propulsion System (APS)
GACspaceguy Member Posts: 2474 From: Guyton, GA Registered: Jan 2006	posted 03-28-2016 10:12 AM Recently, I acquired a 1:10 scale model of a Saturn V S-IVB and I need help in working on its restoration. While I am not planning to bring it back to a "new" state there are a number areas I want to refurbish, one of which is the Auxiliary Propulsion System (APS) on the side of the SIV-B in two places. My research has shown me there are two types of APS, one for the Saturn IB and a different on for the Saturn V. It is the Saturn V type I am looking at. In the picture of the model shown below the inside of the APS is shown. I have the LH2 tank and have made the O2 and Helium tanks. Also note that the opposite APS does not show the detail as this one does. I think it was a white plastic part and this side had a clear cover over it showing the internals. The issue is the engines and location of those engines on the model as it compares to the actual APS as flown. It appears that the model has what I call the "small" engine higher up on the center line and there is a "large" engine in the base as well. The schematic and pictures show that engine to be lower on the APS. Also I can not see a large engine in the base of any of the photos. Can anyone help with any more info on the APS? Was there an earlier configuration that was later changed before it was flown? Any help on this would be great. I have photos of both the Saturn V models of this size at Kennedy Space Center and the U.S. Space & Rocket Center and neither have the same detail of the APS.
SpaceAholic Member Posts: 4437 From: Sierra Vista, Arizona Registered: Nov 1999	posted 03-28-2016 12:51 PM The difference is the addition of the SE 7-1 ullage engine required to support state restart (application only germane to the Saturn V)... not incorporated within the S-IB APS variant.
GACspaceguy Member Posts: 2474 From: Guyton, GA Registered: Jan 2006	posted 03-28-2016 02:42 PM Thanks Scott, understand that makes sense between the two Saturn SIV-B types. With my model being the Saturn V type I am looking for the difference in the engine locations and types from our model to what it looks like for the actual flown version. I was hoping to find some data that shows a different configuration for an earlier version that would explain and document the differences. That way I could replicate what the model might have had when it was first produced. As it came in the damaged condition I am just applying the knowledge I have to the "repair" parts. Thanks again for the input. Are there any more graphics in the book you have in the picture?
GACspaceguy Member Posts: 2474 From: Guyton, GA Registered: Jan 2006	posted 03-30-2016 07:12 PM This forum rocks!! I have received information on the APS for the model from Mike Jetzer (mikej here on cS). The pictures tell the story. It looks like the APS for the model was different from both the final version for the Saturn IB and the Saturn V. I wanted to share the info with everyone. Great pictures of a model I could almost say is the one we now have except I see some missing decals and small detail parts on our model as compared to the one in the pictures now attached. It is obvious from the same builder and gives me the direction I need. Mike thanks for all the help!!!

All times are CT (US)	next newest topic \| next oldest topic
Administrative Options: Close Topic \| Archive/Move \| Delete Topic
	Hop to:

Contact Us | The Source for Space History & Artifacts

Ultimate Bulletin Board 5.47a