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It's a fat dart

I have a brass telescope with a maker mark of I believe to be Mnrrell London. I can't find any information on this telescope. There are no other markings that I can find. Any assistance would be very appreciated.

Thanks for these nice explanation videos about V2. Just in case you did not see it before, this video from Perisope Fil ruclips.net/video/amL3CnZNCb0/видео.html has good information about the assembly of V2 in USA. All the best and continue adding new content :)

Utterly bizarre to hear these words 'at the time evocative of modernity' in what could be a British accent when at the time they were destoying our cities.

This is beyond awesome!! This channel’s playlist associated with the V-2 is an incredible treasure trove of information!!

Hi, first of all, great video! I love the series and how much it goes in to detail. Lovely job! As a German I couldn't help but notice a few minor inaccuracies in the translation. First of all, on the issue of German humor: I fear that "Schlagring" is not as funny as it sounds. I would roughly translate it to "striker ring" or "impact ring". The part next to it is referred to as "Schlagbolzen" which is the German word for a firing pin, akin to that in a gun. The striker ring in that case serves the purpose of a striker in a gun. Second and not nearly as interesting is the "Schnellschluss"-part. The translation of "Schluss" to finish is technically correct, but "cutoff" or "shutter" as it spelled later on in one of the drawing translations is a more accurate term in this case, as the part quickly closes or cuts of a connection, which is the German meaning of "schließen". Third, the word "verstemmt" in the drawing describing the wedge plate closing the blade channels means something like "wedged in" or "press-fit". A "Verstemmte Verbindung" or "Verstemmung" in german is a press-fit connection between two mechanical parts. I am pretty sure that there was no caulking involved, at least that is not insinuated by the description. Feel free to contact me, if you'd like me to give you quick pointers on technical translations for future videos. Keep up the great work!

50 calibre bullet shape 😊

My goodness, you really went to town with the research! Thank you! Is there any info about how long was each test provided by the vacuum?

Many thanks Robert for this excellent addition to the V2 design history.

I was fortunate enough to buy a second hand copy of a German book many years ago, about Peenemunde and the various fails during the design schedule for the V1 and V2 weapons, so this series is fascinating for me..thank you !!

Thank you, a fascinating subject superbly explained.

The ATACMS is somewhat similar to the V2 with its curved nose section and the boattail.

Absolutely loved this, thank you for making these Robert! I was half expecting Wallace & Gromit’s appearance…

In the adventures of Tintin "Destination Moon" the rocket is a v2.

As awful as the V2 was, it definitely had a beautiful elegance in its design.

Thanks, I learned a few cool things. The section about the wind tunnels was great. But overall, this could have been a 10 minute video, which is a problem. Also, I've never once seen a 'back to top of page' button with a rocket icon. :)

Excellent video...👍

So sad they put all this engineering into something that was made to be destroyed

Early breakdowns of unexploded V2 found there was no fuel pump. The allies were stumped. It used a tuned exhaust to suck the fuel.

the tune!

The curved tail section generates a aerospike-like effect. That was the main-reason for the World record climb of the A4. Very effective and efficient Design. Form follows function. Later on the Wernher von Braun Team developed a real radial aerospike Rocket engines for the Upper Stage of the Saturn V.

The gyroscopic inertia of the turbopump caused the missile to lurch around, and these internal stresses against the rotor destroyed it. But in the video it isn't described how how they fixed this problem! Can some PLEASE illuminate me?

Sears-Haack body (Haacksche Ogive)

My Newtonian tube is 11kg (N 200/1200 Skyliner Classic). Balancing the mount it requires to have both the counterweights to the very end of the extension rod. When the weight is balanced in RA and DEC the stepper motors have no problem turning the telescope. But I doubt that you can balance a 15 kg payload as described in the specifications

This was great! I love your videos and the depth you go to in exploring this material. Keep up the good work!

Whitehead Torpedo, with different fins, for air rather than water.

0:05 "Make it pointy!!"🚀 🤔🤔🤔😉😏

Unbelievably good, wow! ❤

I will now adress the elefant in the room :D Of course, Kurzweg claimed to have derived his shape from scientific papers later on. But with focus on tailfin-design, he would have just used the same radius-equipment on his precision lathe to craft both ends of his wooden model, because this stuff is somewhat timeconsuming to set up. Also with the war escalating, the nazis looked massively into economy of scale and mass production, as evidenced by the model52 wartime-locomotives. So there already was this idea to build both ends of the rocket body identical and it was kinda proven to cause no aerodynamical problems as well, so they did it that way, reducing production effort.

"intense human activity"......ummmmm, you mean slavery? Hard to be objective but the V2 team lead by Von Braun did post quite an accomplishment.....still, they were effing Not Seas !

This video really made me realize how similar modern small ballistic-missiles like ATACMS and PrSM look compared to the V2.

We truly live in a wonderful period of time. We have instant access to all of civilisation's information and documentaries by private citizens outmatch their television counterparts!

“Bullet With Butterfly Wings" Oh, Billy is nazi I knew it 🤣🤣🤣

Only a real rocket scientist has the Genie 52SC calculator.

Does it’s paint scheme have any connection to the House of Hohenzollern ?

Damn u got a lot of models here. My dad had plans for the redstone rocket. I cant believe they were lost. Was on a larger folded sheet of paper. I still dont see how these function in a vacuum with nothing to push against.

Roman sling ammo has a strikingly similar overall form. They were cast in lead and often had a flattened profile to assist in holding the projectile in the sling. Like an American football.

Don’t beat yourself up to much, you’ve lost your best mate & colleague

The rocket design is due to the function and existed before the V2. See, for example, the famous photo of the young Wernher von Braun carrying a rocket on the test site at the time and the liquid-fuel rockets that Korolyov and colleagues successfully built and launched in the early 1930s (there a some in museums in Russia and photos online). But earlier solid-fuel rockets also had this shape. Because it follows from the function. The rocket shape can also be seen in science fiction films from before 1930 and in the designs of the pioneers of rocket technology and space travel. The rocket shape can also be seen in documentaries by other rocket builders in Germany and Austria, those before the A4 (the actual name of the V2 from "Aggregat 4") and also in other rocket weapons of the Wehrmacht and also the early Soviet rocket launchers. Because I'm interessted in this topic my whole life, I have studied the history of space travel a lot. And have a very high opinion of the achievements of the team around Wernher von Braun, which is why I like the video. But the thing about the design is not quite true as it is said here at the beginning. Incidentally, rockets are often shown with engines on the side, but this is apparently not the case with the A4 aka V2. Many of the modern rocket images shown in the video are also influenced by later rockets. The rocket design became popular in the 1950s at the latest. But it is true that the A4 represented a quantum leap. Incidentally, the so-called father of Chinese space travel was at the end of WW2 part of the US-commission, who interviewed von Braun in Germany, because he was at this time an scientist on an american university. Incidentally, the production of the A4 missile cost more lives than were killed by its use. And was about as expensive to develop as the Manhattan Project. And after the war, both became a mainstay of today's military and security architecture since than.

Yes, the landmark London building St Mary’s Axe, aka the Gherkin, must have been inspired by this aerodynamic shape.

Why wouldn't it just be a permangmement rocket ?

This guy owes me a model V2! I had one I was completely happy with, and now I know it isn't the correct shape, and I can't look at it the same. Great video!

Hogans heroes

The mixing pot was mounted to the inside top wall of the double walled combustion chamber . The double walls carried the hot fuel up from the combustion chambers double wall chamber and were inches apart with the bottom row of swirl nozzles around the pot in between the combustion chamber roof and the upper outside wallthat the cover attached to . Itd be nice to press the whole thing out of steel because the chamber itself is steel and seems to hold up ok

Superb research!

This is a fascinating video, I enjoyed the whole thing, but the rate of information is sooooooo slow. Too much repetition. You don’t need to say the same thing 4 different ways.

You shouldve used an original 12.8 gram s.S. bullet for comparison, as it uses a bigger ogive radius than the bullets you were using, and will match the V2 shape much better.

like and subscribe earned

A tossed object ultimately wants to settle into rotating about the object's largest moment of inertia. For an object that somewhat resembles a long and slender right circular cylinder, this means that such an object, when tossed and tumbling, would ultimately settle into tumbling end over end. The fins (placed at the aft of a rocket body) are to counteract such an object's natural "desire" to tumble end over end.

He looks like he's podcasting from a bunker in Peenemünde.