# Apollo 10 vs 11

**URL:** <https://boards.straightdope.com/t/apollo-10-vs-11/839570>\
**Category:** Factual Questions\
**Created:** [September 1, 2019, 9:43pm UTC](https://boards.straightdope.com/t/apollo-10-vs-11/839570 "2019-09-01T21:43:04Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![ElvisL1ves](https://avatars.discourse-cdn.com/v4/letter/e/5daacb/32.png) [@ElvisL1ves](https://boards.straightdope.com/u/ElvisL1ves)\
**Post date:** [September 5, 2019, 12:22pm UTC](https://boards.straightdope.com/t/apollo-10-vs-11/839570/21 "2019-09-05T12:22:48Z")

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NASA certainly wouldn’t have done that anyway, out of concern for flame or blast or sound-pressure damage from one booster damaging the other.

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**Author:** ![Dave.B](https://avatars.discourse-cdn.com/v4/letter/d/9f8e36/32.png) [@Dave.B](https://boards.straightdope.com/u/Dave.B)\
**Post date:** [September 5, 2019, 12:34pm UTC](https://boards.straightdope.com/t/apollo-10-vs-11/839570/22 "2019-09-05T12:34:22Z")

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> [@ElvisL1ves](#):
>
> NASA certainly wouldn’t have done that anyway, out of concern for flame or blast or sound-pressure damage from one booster damaging the other.

The Skylab I Saturn V was on the pad at the same time as the Skylab II Saturn IB, and there were several times that both pads were occupied by Shuttles.

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**Author:** ![joema](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@joema](https://boards.straightdope.com/u/joema)\
**Post date:** [September 5, 2019, 2:16pm UTC](https://boards.straightdope.com/t/apollo-10-vs-11/839570/23 "2019-09-05T14:16:35Z")

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Correct; here is a photo of two shuttles on the pad simultaneously. STS-125 (Hubble servicing mission) launched while STS-400 was on the pad standing by for a possible rescue mission: [https://upload.wikimedia.org/wikipedia/commons/5/53/Space\_shuttles\_Atlantis\_(STS-125)\_and\_Endeavour\_(STS-400)\_on\_launch\_pads.jpg](https://upload.wikimedia.org/wikipedia/commons/5/53/Space_shuttles_Atlantis_%28STS-125%29_and_Endeavour_%28STS-400%29_on_launch_pads.jpg)

The Saturn V and Saturn IB on pad at same time for Skylab: [https://images.app.goo.gl/TxQw3uqfrLVtHby2A](https://images.app.goo.gl/TxQw3uqfrLVtHby2A)

Two Russian N1 launchers were on the pad at the same time. The N1 was roughly equivalent to the Saturn V in some metrics: [https://images.app.goo.gl/KXygzindEwSWRkCX7](https://images.app.goo.gl/KXygzindEwSWRkCX7)

The original Saturn/Apollo plan envisioned a higher flight rate and concurrent pad operations with two Saturn V vehicles, so the infrastructure was built to support this. That rate did not materialize but the VAB was capable of supporting assembly of three Saturn Vs at the same time, and this was actually done during 1969: [Vehicle
Assembly
Building (VAB)](http://apollolaunchcontrol.com/v20test/http___www.apollolaunchcontrol.com_/Vehicle_Assembly_Building.html)

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