Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > RockSim Asylum
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-13-2018, 10:14 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default Estes Geo Sat LV #1977

I put together a RockSim flight simulation file for the Estes Geo Sat LV #1977, see attached file and screen shots. I am planning to clone this model using 3D prints of the plastic parts available at; https://www.thingiverse.com/thing:440953

I had to make my best guess at the dimensions of several of the Geo Sat LV parts namely:
Fin thickness (3/32"?)
Diameter of the wood dowels (1/16"?)
Dimensions of the booster standoffs (1/4" span? 10" Length? )
Dimensions of the launch lug standoffs (1/4" span?, 1" length? 45degree offset angle?)
Actual fin root length (2.03"?) and fin tip cord length (0.83"?)

Can anyone supply these details from an actual kit so I can create a better RockSim file and have a more accurate sized clone?

Based on the simulations in the attached file I would not want to fly this rocket on any of the B motors that are recommended. The C6-3 motor is barely adequate, simulation gives about 300' AGL and 22mph off the tip of the launch rod!
Attached Thumbnails
Click image for larger version

Name:  Estes Geo Sat Sim fig 1.jpg
Views: 35
Size:  223.1 KB  Click image for larger version

Name:  Estes Geo Sat Sim fig 2.jpg
Views: 37
Size:  198.5 KB  
Attached Files
File Type: rkt oop_estes_Geo_Sat_LV.rkt (116.4 KB, 20 views)
__________________
Bruce S. Levison, NAR #69055

Last edited by teflonrocketry1 : 12-17-2018 at 12:49 PM.
Reply With Quote
  #2  
Old 12-14-2018, 09:03 AM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 6,988
Default

Quote:
Originally Posted by teflonrocketry1
I put together a RockSim flight simulation file for the Estes Geo Sat LV #1977, see attached file and screen shots. I am planning to clone this model using 3D prints of the plastic parts available at; https://www.thingiverse.com/thing:440953

I had to make my best guess at the dimensions of several of the Geo Sat LV parts namely:
Fin thickness (3/32"?)
Diameter of the wood dowels (1/16"?)
Dimensions of the booster standoffs (1/4" span? 10" Length? )
Dimensions of the launch lug standoffs (1/4" span?, 1" length? 45degree offset angle?)
Actual fin root length (2.03"?) and fin tip cord length (0.83"?)

Can anyone supply these details from an actual kit so I can create a better RockSim file and have a more accurate sized clone?

Based on the simulations in the attached file I would not want to fly this rocket on any of the B motors that are recommended. The C6-3 motor is barely adequate, simulation gives about 300' AGL and 22mph off the tip of the launch rod!


Bruce, I have an original kit at home. I can check the details tonight when I get home. This is one of those birds that needed 24mm power. I've been toying with the idea of converting mine.
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

On the build floor: Centuri Stellar Hercules, Estes - ESAM-58, Semroc Squire, RDC V-Max

Ready to fly: Estes Astron Farside X, Estes Astron Apogee, FRW Star Jart, Semroc Cherokee D, Semroc SLS Scorpion
Reply With Quote
  #3  
Old 12-14-2018, 05:33 PM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 6,988
Default

Fin thickness (3/32"?) Yes
Diameter of the wood dowels (1/16"?) Mine are closer to 1/8"
Dimensions of the booster standoffs (1/4" span? 10" Length? ) Mine are 9 7/8", but that could be due to trimming.
Dimensions of the launch lug standoffs (1/4" span?, 1" length? 45degree offset angle?) 1.25 " base length, 5/8" at top.
Actual fin root length (2.03"?) and fin tip cord length (0.83"?) Root is 1 7/8", tip is 7/8"
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

On the build floor: Centuri Stellar Hercules, Estes - ESAM-58, Semroc Squire, RDC V-Max

Ready to fly: Estes Astron Farside X, Estes Astron Apogee, FRW Star Jart, Semroc Cherokee D, Semroc SLS Scorpion
Reply With Quote
  #4  
Old 12-14-2018, 07:23 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default

Bill,

Thanks for your timely reply and detailed information!

I hope you don't mind supplying a few more details:
What is the span or width of the booster standoffs (i.e. how far from the main body tube) ?
How tall are the launch lug standoffs?

Do you have any pictures that show detail of the completed model?
__________________
Bruce S. Levison, NAR #69055

Last edited by teflonrocketry1 : 04-08-2019 at 11:21 PM.
Reply With Quote
  #5  
Old 12-14-2018, 08:02 PM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 6,988
Default

Quote:
Originally Posted by teflonrocketry1
Bill,

Thanks for you timely reply and detailed informaton!

I hope you don't mind supplying a few more details:
What is the span or width of the booster standoffs (i.e. how far from the main body tube) ?
How tall are the launch lug standoffs?

Do you have any pictures that show detail of the completed model?

The booster standoffs look to be 5/16" in width, but it's a tight spot. The lug standoffs are 1/4". It's right here with me. What kind of pics do you need?
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

On the build floor: Centuri Stellar Hercules, Estes - ESAM-58, Semroc Squire, RDC V-Max

Ready to fly: Estes Astron Farside X, Estes Astron Apogee, FRW Star Jart, Semroc Cherokee D, Semroc SLS Scorpion
Reply With Quote
  #6  
Old 12-14-2018, 09:05 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default

Bill,

I am not even sure of the shape of the launch lug standoffs and the shape of the booster standoffs that connect to the side pods. It would help to have a profile photgraph showing the shape of the launch lug standoffs and the standoffs on the booster tube, as there is no detail provided anywhere about these parts from the original kit. What is surprisong is that the fins are even smaller than I expected since I took measurements from the template on page 4 of the instructions poseted at the JimZ site.
__________________
Bruce S. Levison, NAR #69055
Reply With Quote
  #7  
Old 12-15-2018, 01:04 PM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 6,988
Default

Lousy day for photography. Let me know if these will suffice.
Attached Thumbnails
Click image for larger version

Name:  IMG_2181.JPG
Views: 43
Size:  542.7 KB  Click image for larger version

Name:  IMG_2180.JPG
Views: 39
Size:  456.1 KB  Click image for larger version

Name:  IMG_2178.JPG
Views: 43
Size:  672.3 KB  Click image for larger version

Name:  IMG_2177.JPG
Views: 44
Size:  553.7 KB  
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

On the build floor: Centuri Stellar Hercules, Estes - ESAM-58, Semroc Squire, RDC V-Max

Ready to fly: Estes Astron Farside X, Estes Astron Apogee, FRW Star Jart, Semroc Cherokee D, Semroc SLS Scorpion
Reply With Quote
  #8  
Old 12-15-2018, 03:00 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default

Bill,

These pictures are great, Thanks!
__________________
Bruce S. Levison, NAR #69055
Reply With Quote
  #9  
Old 12-17-2018, 01:11 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default

I updated the RockSim file in my original post with the information that Bill provided. I also suggest building this heavy rocket with at least a 24mm motor mount. The lower thrust motors don't give this model much speed at the top of the launch rod; even a 24mm E9 motor only gives about a 26mph speed at the end of the guide, and the D12-3 only 30mph, see attached RockSim file for details. I also attached a screen shot of the 24mm motor simulation results and the 3D view of the model I simulated.
Attached Thumbnails
Click image for larger version

Name:  Estes Geo Sat LV 3D.jpg
Views: 34
Size:  138.2 KB  Click image for larger version

Name:  Estes Geo Sat LV Sim.jpg
Views: 24
Size:  230.7 KB  
Attached Files
File Type: rkt oop_estes_Geo_Sat_LV 24mm.rkt (116.4 KB, 22 views)
__________________
Bruce S. Levison, NAR #69055
Reply With Quote
  #10  
Old 01-05-2019, 09:11 PM
teflonrocketry1's Avatar
teflonrocketry1 teflonrocketry1 is offline
Craftsman
 
Join Date: Aug 2007
Location: Whitehouse, Ohio
Posts: 220
Default

FYI, My friend Andrew is posting an Estes Geo Sat LV clone build using my 3D printed parts and decals on the other forum; https://www.rocketryforum.com/threa...0/#post-1845147.
__________________
Bruce S. Levison, NAR #69055
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 03:38 AM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe 1998-2019