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Does anyone could link an image/3D model/photo that shows the 6 22-N engines?

Related question: OSIRIS-REx engines location.

Star Man
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Cristiano
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1 Answers1

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This article shows a picture of the whole OSIRIS-REx spacecraft and also shows an individual picture of the thruster.

MR-106L thruster manufactured by Aerojet Rocketdyne.

The name of this engine is the MR-106L thruster and it uses Hydrazine Monopropellant fuel and has a specific impulse of 229 - 235 seconds. These engines are used to control the pitch and yaw during the main engine burn.

Here is an interactive 3D-model of OSIRIS-REx which you can use to locate the 6 thrusters. The 6 main 200 N thrusters are located at the bottom of the spacecraft, where the diagram above shows it. However, they have changed it to four main engines. All these 3-D models are outdated. The small six 22 N thrusters are located in the "rectangular area" beside the cluster of the main engines. There are 2 of these "rectangles". They don't look like thrusters in this model but it does in this Wikipedia model.

enter image description here enter image description here

Star Man
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  • Good! But could you indicate where they are located? – Cristiano Aug 13 '19 at 16:21
  • @Cristiano Just made an edit that shows a 3D-model of the spacecraft. – Star Man Aug 13 '19 at 16:25
  • That model seems wrong because there is a photo that shows 4 engines: https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2016/08/10.jpg – Cristiano Aug 13 '19 at 16:31
  • The only way to solve the enigma is to show both the 4-engine main group and the 6 22-N thrusters. Can you locate the 4 main engines in the 3D model (please, take a look at my other question: https://space.stackexchange.com/q/38093/20397). – Cristiano Aug 13 '19 at 16:52
  • @Cristiano You are right, there are 4 engines. I also think I might've located those 6 22 N thrusters. – Star Man Aug 13 '19 at 19:44
  • Their off-axis location seems a bit strange to me, but I think you're right. Thanks a lot. – Cristiano Aug 13 '19 at 22:02
  • @Cristiano They're only there to control its pitch and yaw. – Star Man Aug 13 '19 at 23:25
  • I think that they are also used for the very small DV corrections during the Orbital-A phase and probably also for the entry/exit maneuvers to/from Orbital-C/B; I'm investigating with the help of the NAIF data files... – Cristiano Aug 13 '19 at 23:52