blackshire
09-29-2011, 02:16 PM
Hello All,
This report from LAPAN, Indonesia's space agency (see: http://www.lapan.go.id/annual/file_pdf/bab_01.pdf ), contains good close-up photographs of their RX-320 and RX-420 sounding rockets (as well as pictures of other test vehicles). I am working on getting dimensioned drawings of the RX-320 and the RX-420, but even if such scale material is not forthcoming, models of these rockets could be scaled directly from the photographs since their lengths and diameters are known. (I have given them below--they are from "Indomil's Blog" http://indomil.wordpress.com/tag/rocket/ .) Below the rockets' dimensions are links to other photographs of them and information on them. Scaling from photographs works as follows (this information is from "The Art of Scale Model Rocketry" by Peter Alway):
"The first step in working from such pictures is to establish a scaling factor. It may be wise to try two scales, horizontal and vertical. This corrects for foreshortening in photos and copying distortions in drawings."
"Fortunately, overall length and maximum diameter are easy to look up for most rockets...From this you can determine an overall length and diameter for your model. To find the picture scaling factors, measure diameter and length from the photo. For the vertical factor, divide the model length by the length on the picture. For the horizontal factor, divide the model diameter by the photo diameter."
"Now you can measure the details directly from the illustration, multiply by the appropriate scaling factor, and have the correct model dimension of the detail."
Below are the RX-320 and RX-420 overall length and diameter, and at the bottom are links to more material on both vehicles:
RX-320
Length: 4736 mm
Diameter: 320 mm
RX-420
Length: 6200 mm
Diameter: 420 mm
Here are links to more material on the RX-320 and the RX-420:
http://www.globalsecurity.org/space/world/indonesia/rps.htm
http://space-tourism-indonesia.blogspot.com/2011/05/another-slv-rocket-from-lapan.html
http://en.wikipedia.org/wiki/National_Institute_of_Aeronautics_and_Space
http://indomil.wordpress.com/2009/07/02/indonesian-rocket-institute-successfully-launched-rx-420-rocket-this-morning-july-02-2009/
http://indomil.wordpress.com/tag/rocket/
http://www.space-travel.com/reports/Indonesia_launches_rocket_into_space_999.html
http://www.lapan.go.id/
I hope this information will be useful.
This report from LAPAN, Indonesia's space agency (see: http://www.lapan.go.id/annual/file_pdf/bab_01.pdf ), contains good close-up photographs of their RX-320 and RX-420 sounding rockets (as well as pictures of other test vehicles). I am working on getting dimensioned drawings of the RX-320 and the RX-420, but even if such scale material is not forthcoming, models of these rockets could be scaled directly from the photographs since their lengths and diameters are known. (I have given them below--they are from "Indomil's Blog" http://indomil.wordpress.com/tag/rocket/ .) Below the rockets' dimensions are links to other photographs of them and information on them. Scaling from photographs works as follows (this information is from "The Art of Scale Model Rocketry" by Peter Alway):
"The first step in working from such pictures is to establish a scaling factor. It may be wise to try two scales, horizontal and vertical. This corrects for foreshortening in photos and copying distortions in drawings."
"Fortunately, overall length and maximum diameter are easy to look up for most rockets...From this you can determine an overall length and diameter for your model. To find the picture scaling factors, measure diameter and length from the photo. For the vertical factor, divide the model length by the length on the picture. For the horizontal factor, divide the model diameter by the photo diameter."
"Now you can measure the details directly from the illustration, multiply by the appropriate scaling factor, and have the correct model dimension of the detail."
Below are the RX-320 and RX-420 overall length and diameter, and at the bottom are links to more material on both vehicles:
RX-320
Length: 4736 mm
Diameter: 320 mm
RX-420
Length: 6200 mm
Diameter: 420 mm
Here are links to more material on the RX-320 and the RX-420:
http://www.globalsecurity.org/space/world/indonesia/rps.htm
http://space-tourism-indonesia.blogspot.com/2011/05/another-slv-rocket-from-lapan.html
http://en.wikipedia.org/wiki/National_Institute_of_Aeronautics_and_Space
http://indomil.wordpress.com/2009/07/02/indonesian-rocket-institute-successfully-launched-rx-420-rocket-this-morning-july-02-2009/
http://indomil.wordpress.com/tag/rocket/
http://www.space-travel.com/reports/Indonesia_launches_rocket_into_space_999.html
http://www.lapan.go.id/
I hope this information will be useful.