Questions tagged [secondary-payload]

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Interplanetary secondary payload

Have there been any interplanetary secondary payloads? If there were none, are any such payloads planned? I consider two options: launcher rocket's destination is Earth's orbit (LEO etc.), then ...
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2 votes
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Does better satelite propulsion help selling secondary payloads?

Generally orbital inclination change is said to be (fuel) expensive so everyone is trying to reach their final orbit straight from the launch vehicle. Small launch vehicles (Rocket Lab etc.) reach ...
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7 votes
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Why do rockets coast before secondary payload deployment?

I was watching a falcon 9 launch. After SECO, stable orbit was achieved and the primary payload was deployed. The 2nd stage coasted for an hour (no burns in between) and then deployed rideshare ...
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3 votes
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What is the Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) Augmented Geosynchronous Laboratory Experiment satellite?

The Spaceflight Now article Multi-satellite payload hoisted into high-altitude orbit by Atlas 5 rocket includes the passage: The lower passenger is the Evolved Expendable Launch Vehicle (EELV) ...
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4 votes
2 answers
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What secondary payloads, if any, are launching on the inaugural flight of Falcon Heavy?

Overshadowed by a silly, yet awesome primary payload — 'a cool colored cool electric sports car playing a cool track' on to a heliocentric orbit, are there other satellites/secondary payload Falcon ...
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17 votes
1 answer
317 views

When have secondary payloads damaged the primary payload of a launcher?

Primary payload customers have traditionally been cautious when allowing secondary payloads on the same launcher. For example, a secondary payload is not trusted to have its own chemical propulsion ...
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7 votes
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How do the secondary payload abilities of different launchers compare?

ULA with their Atlas V seems to be the leading launch service provider for secondary payloads. This FISO presentation is convincing anyway. And good for them since miniaturization of satellites ...
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9 votes
3 answers
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By what methods can cubesats move from LEO to higher orbits?

If a cubesat is launched as secondary payload to LEO, what ways are there to put it in a higher orbit, for example outside of the van Allen belt to make a radiation experiment? The ISS launches ...
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7 votes
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Barriers to launching a cubesat

Cubesats and femto-sats are a nice place for universities and small enterprises to set their sights on. There are a number of sources of hardware and software (some even available at reasonably low ...
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6 votes
2 answers
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Secondary Payload definition

I'm doing a lot of research on amateur sattelites and I am trying to understand everything. I'm starting with the first amateur sattelite, Oscar 1 "Oscar 1 was the first sattelite to be ejected as a ...
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20 votes
2 answers
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How does a single rocket place multiple satellites into orbit?

Nowadays, many rockets transport more than one satellite in orbit. But how does a single rocket place multiple satellites into their orbits? Do all rockets which place multiple satellites into orbit ...
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