I get junk mail from the rocketry forum. You may or may not find some of these interesting.

https://www.rocketryforum.com/threads/deepest-crater-competition.149336/

What is the biggest crater you’ve ever made in high powered rocketry? A student group trying to send a two-stage monster to 170kft at FAR yesterday might have just taken the record and made a permanent scar in the desert to boot.

https://www.rocketryforum.com/threads/a-q-powered-rocket-build.149574/

We’ve got a 9” diameter 7 1/2’ long “Q” motor casing that’s going to need a rocket.

Note from mollwollfumble, a Q rocket is huge power for amateur rocketry, The power goes up through the alphabet from AAA, AA, A, B, C, … Few people get higher then M. The full scale V2 model used the highest ever amateur power launched in Australia, an O. This is two levels more powerful than that.

Here’s the motor casing for those that haven’t seen it yet.

mollwollfumble said:

I get junk mail from the rocketry forum. You may or may not find some of these interesting.

https://www.rocketryforum.com/threads/deepest-crater-competition.149336/

What is the biggest crater you’ve ever made in high powered rocketry? A student group trying to send a two-stage monster to 170kft at FAR yesterday might have just taken the record and made a permanent scar in the desert to boot.

https://www.rocketryforum.com/threads/a-q-powered-rocket-build.149574/

We’ve got a 9” diameter 7 1/2’ long “Q” motor casing that’s going to need a rocket.

Note from mollwollfumble, a Q rocket is huge power for amateur rocketry, The power goes up through the alphabet from AAA, AA, A, B, C, … Few people get higher then M. The full scale V2 model used the highest ever amateur power launched in Australia, an O. This is two levels more powerful than that.

Here’s the motor casing for those that haven’t seen it yet.

Everyone knows it’s really a Mallee Fowl nest.

PermeateFree said:

mollwollfumble said:

I get junk mail from the rocketry forum. You may or may not find some of these interesting.

https://www.rocketryforum.com/threads/deepest-crater-competition.149336/

What is the biggest crater you’ve ever made in high powered rocketry? A student group trying to send a two-stage monster to 170kft at FAR yesterday might have just taken the record and made a permanent scar in the desert to boot.

https://www.rocketryforum.com/threads/a-q-powered-rocket-build.149574/

We’ve got a 9” diameter 7 1/2’ long “Q” motor casing that’s going to need a rocket.

Note from mollwollfumble, a Q rocket is huge power for amateur rocketry, The power goes up through the alphabet from AAA, AA, A, B, C, … Few people get higher then M. The full scale V2 model used the highest ever amateur power launched in Australia, an O. This is two levels more powerful than that.

Here’s the motor casing for those that haven’t seen it yet.

Everyone knows it’s really a Mallee Fowl nest.

I find it really interesting as regards crater formation from high speed projectiles. There’s a separate inner and outer crater, which is quite the opposite to a more familiar crater with a raised mountain in the centre.

The location is Mojave Desert, somewhere between Los Angeles and Las Vegas, so mallee fowl nest is quite unlikely.

What could make a hole like that near Las Vegas?