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ORBITAL "Antares / Demo payload "

COTS (Commercial Orbital Transportation Services)

First Antares Demonstration Mission "A-ONE Mission"



The ANTARES rocket is a two-stage launch vehicle designed to provide responsive, cost effective, and relialble access to orbit and Earth escape for medium -class payloads weighing over 5000 kg. Internally funded by ORBITAL, Antares is currently prepared for launch on its first Demonstration Mission under NASA Commercial Orbital Transportation Services (COTS) agreement. This is the first of nine Commercial Resupply Services (CRS) Missions to deliver cargo to the ISS.

Antares was successfully launched at 5:00 pm EDT on April 21, 2013 from Pad 0A, Mid Atlantic Regional Spaceport on Wallops Island, Virgina, carrying the Cygnus Mass Simulator.

The AXM version for the Antares rocket papermodel was made possible from photos obtained from Spaceflight Now website. This model is available as a free download on both 1:144 and 1:100 scales.

Enjoy the photos and the model!


This page has been update with the addition of the Cygnus Mass Simulator in 1:100 scale and the Castor 30 Solid Motor engine too!

The Cygnus Mass Simulator is a mockup of the Cygnus craft and not a real spacecraft. Its sole purpose is to demonstrate cargo delivery to the ISS.


Download files:



(694 kb)



(1.24 mb)

Cygnus Mass Simulator 1:100

(768 kb)


Antares Payload Shroud

(308 kb)

Antares Cygnus Mass Simulator manual (3.2 mb)

Assembly manual (1 mb)

Second Stage Shroud manual (2.8 mb)



Cygnus Mass Simulator attached to the Castor 30 Solid Motor Engine



Source: Orbital website



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