Today we commissioned our brand new educational #turbojet, or as I like to call it, TEFBA (Totally Environmentally Friendly Bike Accelerator) 🚀

#SoundOn

'#Concorde Turbo-Jet Engine, Complete with Afterburner'

https://www.ebay.co.uk/itm/116016616403

#Concorde #supersonic #turbojet #jet #jetengine #engine #ebay #aviation

'The #RollsRoyce #Olympus 593-610, fitted with fans and an afterburner, is available for $716,927.94 (£565,000.00) by eBay user ny10uk20. According to the seller, the engine is “not able to fly” and “must only be used for static display.”'

https://simpleflying.com/concorde-engine-for-sale-ebay/

Some channels i watch are a bit of a acquired taste. No need to explain further really. But anyways...

AgentJayZ again kills it with a very interesting video for all tech and physics nerds out there.

Can you restart a turbine, turbojet or turbofan (most likely) engine without any auxiliary power besides onboard batteries and maybe a bit of electricity from the Ram Air Turbine which bigger jets use in case of a emergency?

**spoilers start here**

What does that mean? Imagine, you're in a jet somehow. And not only both engines quit, but you're actually unable to start the APU (Auxillary Power Unit, it's own tiny turbine-generator). So you got no real options left but use the windmilling of your turbine to get it up to speeds where you can inject fuel and actually start it.

Tl;dr: This scenario is _EXTREMELY_ unlikely, just on the grounds that usually no engine quits for no reason.. But if you are there.

Well, it's not good ..... but _might_ just be possible.... Most probably killing the engine along the way. (You will necessarily overheat it in the process and shorten it's lifetime massively. ;))

O.k. sorry, enough technobabble.

**spoilers end**

youtu.be/SVumN6qzWCc
redirect.invidious.io/watch?v=…
inv.citw.lgbt/watch?v=SVumN6qz…

If you like to skip the rambling at the beginning and 3 other questions and outright start with the main topic, use these links:

youtube.com/watch?v=SVumN6qzWC…
redirect.invidious.io/watch?v=…

(Starting at minute 8:51 ;))

#AgentJayZ #Youtube #Invidious #Turbine #Engine #EngineOut #TurboJet #TurboFan #Aviation #Physics #Engineering #Emergency #APU #RandomShit ;)

Electric Jet Engine Uses 3D Printed Compressor, Skips The Turbine Altogether.

Turbojet engines are an incredible piece of 20th century engineering that except for some edge cases, have mostly been replaced by Turbofans. Still, even the most basic early designs were groundbreaking in their time. Material science was applied to make them more reliable, more powerful, and lighter. But all of those incredible advances go completely out the window when you're [Joel] of [Integza], and you prefer to build your internal combustion engines using repurposed butane canisters and 3d printed parts as you see in the video below the break.

Emoscopes, CC BY-SA 3.0 via Wikimedia Commons

To understand [Integza]'s engine, a quick explanation of Turbojet engines is helpful. Just like any other internal combustion engine, air is compressed, fuel is burned, and the reaction produces work. In a turbojet, a compressor compresses air. Fuel is added in a combustor and ignited, and the expanding exhaust drives a turbine that in turn drives the compressor since both are attached to the same shaft. Exhaust whose energy isn't spent in turning the turbine is expelled and produces thrust, which propels the engine and the vehicle it's attached to in the opposite direction. Simple, right? Right! Until the 3d printer comes in.

Sadly for 3d printed parts, they are made of plastic. Last we checked, plastic isn't metal, and so 3d printing a turbine to give the extremely hot exhaust something turn just isn't going to work. But what if you just skipped the whole turbine part, and powered the compressor with an electric motor? And instead of using an axial compressor with tons of tiny blades that would likely be impossible to 3d print with enough strength, you went with a sturdy, easy to print centrifugal compressor? Of course, that's exactly what [Integza] did, or we wouldn't be talking about it. The results are fantastic, especially considering that the entire machine was built with 3d printing and a home made spot welder.

If you want to build a full jet turbine, we won't say it's easy, but you might appreciate this jet turbine whose components include a toilet paper holder as proof that once a technology is understood, it can be built in the worst ways possible and still work. Sort of.

#enginehacks #electrictrubine #jetengine #turbojet

Turbocharger Jet Engine Relies on Wood Pellet Ignition

Turbochargers as used on cars bear some similarities with jet engines. Fundamentally, both contain a turbine that harvests energy from hot gas, using it to spin a compressor which sucks in fresh air for combustion. Thus, turning a turbocharger into a jet engine is entirely possible, and [HRom] decided to have a crack at it.

The build starts with a turbo that appears to have been used on a diesel engine from the Volkswagen group. The first step was to cut the integral exhaust manifold off the turbo housing. A combustion chamber is then added which takes in fresh air from the compressor housing, and delivers hot combustion products to the turbine inlet. The homebrewed jet engine burns propane as fuel, introduced into the chamber via a nozzle.

The initial test failed as combustion was occurring at the turbine exhaust rather than in the combustion chamber, likely due to the lack of a proper ignition source inside the combustion chamber. A redesign employed a bigger combustion chamber built out of a fire extinguisher, with smouldering wood pellets inserted inside to get the injected propane burning.

The redesign works, and the turbocharger jet engine releases a thunderous scream as it turns at ever-increasing speed. However, with no oiling system or any way of controlling air or fuel flow in the engine, it eventually stops in a huge puff of smoke. Regardless, the engine did run in a sustained manner even if the ignition method was rudimentary.

We've seen similar builds before, and the rudimentary construction means they're typically nowhere near being flight-weight engines. They are incredibly cool, however, and a great way to learn the basic principles of how jet engines work. Video after the break.

[Thanks to Francisco José Lazur for the tip!]

#enginehacks #jetengine #turbo #turbocharger #turbojet

#letsroll

⚅ ⚂ ⚀ ⚂ ⚁→#turbojet
⚅ ⚂ ⚀ ⚃ ⚄→#tutu
⚅ ⚀ ⚃ ⚃ ⚄→#swimsuit
⚃ ⚄ ⚅ ⚂ ⚂→#pulmonary
⚄ ⚃ ⚀ ⚅ ⚅→#shortcut
⚀ ⚁ ⚄ ⚀ ⚀→#attire

turbojet-tutu-swimsuit-pulmonary-shortcut-attire

Roll your own @ https://www.eff.org/deeplinks/2016/07/new-wordlists-random-passphrases

#letsroll

⚁ ⚅ ⚁ ⚀ ⚃→#exile
⚀ ⚅ ⚄ ⚀ ⚁→#concrete
⚃ ⚅ ⚅ ⚃ ⚁→#reentry
⚂ ⚂ ⚄ ⚀ ⚅→#harpist
⚅ ⚂ ⚀ ⚂ ⚁→#turbojet
⚂ ⚃ ⚁ ⚅ ⚄→#hydrant

exile-concrete-reentry-harpist-turbojet-hydrant

Roll your own @ https://www.eff.org/deeplinks/2016/07/new-wordlists-random-passphrases