Scott Manley

You might have noticed I've posted a couple of short videos in the last few days, and sure enough some people feel disappointed when they get a 60 second video not in widescreen format, but it's something I think can work for me. It doesn't take much time to create one of these from an event and they can fill in the times between longer videos. Also for now, Youtube has made them Ad Free so that's nice.

There's still going to be a constant output of full length videos, don't worry about that, these shorts are in addition to the regular content.

8 months ago | [YT] | 293

It sounds like SpaceX have won the competition to build the Human Landing System for the Artemis program, beating out Blue Orion’s National Team and Dynetics.
It’s still unofficial, but I’m hearing the Congress didn’t give NASA enough money to fund any option and SpaceX dropped their bid low enough that it was the only possibility.
Will find out more in about half an hour.

9 months ago | [YT] | 8,863

Going live right now for Yuri's Night

9 months ago | [YT] | 436

Todays video about 'Keyhole Rocket Surgery' on Apollo 14 covers another odd feature of the mission, it's not commonly talked about in documentaries because it comes between the high drama of Apollo 13 and the debut of the Lunar Rover in Apollo 15.
However I keep finding stories about this mission, I love my description of Don Eyles computer hack that saved the mission, and Stuart Roosa's tree seeds which travelled with them around the moon and returned to grow on Earth. This was also the mission which let Alan Shepard play golf on the moon because he brought a couple of golf balls with him in his personal preference kit.
Ed Mitchell's kit included over 100 copies of the Bible in microfilm format, and the microfilm was actually on its second trip to the moon after being taken on Apollo 13 and not making it to the surface. He also claims to have tried ESP experiments with people on earth while travelling to the moon and to be honest I don't see that working when I'm in the same room.

Apollo 14 also saw the only use off the Modular equipment transporter which was a hand cart used to move equipment and rock samples around the moon, interestingly, unlike the lunar rover, the wheels on this were conventional pneumatic tires, rather than the wire mesh used on the lunar rover.

So what's the most interesting thing Apollo 14 took to the moon?

11 months ago | [YT] | 1,765

SpaceX's flight test of Starship once again ended in fire today, in fact I might say that this test may be less successful than the previous one, since the impact was faster and the debris scattered wider. Obviously I've got to find time to work on a video, but I figured I'd say a few things right now.

The good news is that the launch, ascent, transition and belly flop maneuver were all consistent with SN8 which means that this is becoming a known quantity.
The problem was during landing one of the engines failed to light properly, while one engine created beautiful mach diamonds we only showed flares and coughs until the engine stopped completely, and it looks like there may have been a fire in the powerhead. Some of the heat shielding in the skirt area was blown out by this failing engine, but I don't think we saw any parts leaving that were positively identified as being part of the engine.
The failing engine never generated the clean looking mach diamonds so there was no point where it had any significant chamber pressure. The second engine exhaust kept generating yellow flashes but these cleared up just before impact so the good engine continued to function, which is a good sign because while the force that knocked out the heat shields wasn't enough to damage the one good engine. This is a good omen for general survivability.

But the question really is why the engine failed, since the good engine kept running it's like that starship in general wost working fine, unlike SN8 which lost fuel tank pressure. It might be a problem with the engine itself - Raptor is very much an in development engine and the engines flown in these test flights get more operational time than they do on the test stand. Or there could be something in the propellent feed, like a void or a cavity, which only affected this engine and left it unable to operate as intended.

I hope we find out more soon.

11 months ago | [YT] | 852

It's almost the 50th anniversary of the greatest computer hack ever, Apollo 14 had a technical problem with the abort trigger switch which was sending spurious signals to the Apollo Guidance computer. In a couple of hours one of the software developers came up with a workaround which enabled them to land on the moon, but to do this they needed to make edits to the computer memory of a running system to convince it to ignore the abort signals. And they had to punch in this sequence of instructions while also flying a powered lunar descent.

11 months ago | [YT] | 715

I find this amusing on many levels, SpiffinBrit usually exploits games, but today showedhow the much neglected community tab is currently weaponized to get massive boosts in impressions, so if you're seeing lots of posts with masses of popular search terms then this it the root of that.

Of course, this post should probably just be buried by everyone else filling their post with terms like make money fast like Elon musk.

This is a much better way to chase subs

11 months ago | [YT] | 1,889

A few weeks ago I ArsTechnica asked me a bunch of questions about my history on youtube:

1 years ago | [YT] | 743


1 years ago | [YT] | 174

Did you know the British Interplanetary society were studying human spaceflight in the 1930s and came up with a design for a space suit to be used on the moon. This is a great talk from a prop designer who tried to build a replica of the design.

1 years ago | [YT] | 314