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Ministry of Image - Fanfiction Printing

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Description

“Pressure Cooker, I know how weird it is for me to be saying this particular string of words, but… are you SURE this is safe!?”

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Ferrotter
The End wasn't The End - Found a new home after the great exodus of 2012

@Princess Tuna  
Actually, she’d be safe. That’s a pulsejet. The mouth is full of narrow flapping slats, like Venetian blinds, not spinning turbine blades. The cycle is:  
  1. The engine is moving forwards, so ram pressure pushing on the slats, combined with cooling gasses from the prior cycle behind the slats, causes them to open inwards, admitting air.  
  2. Fuel is constantly sprayed into the combustion chamber, mixing with the air as it comes in.  
  3. Fuel-air mixture reaches a glow plug farther back in the chamber and detonates.  
  4. The explosion slams the slats shut again, forcing the explosion to go out the exhaust and create thrust.  
  5. Thrust makes the engine go forwards, returning to 1.
     
    There is a small amount of inwards suction as the remaining explosion gasses cool and shrink. Some pulsejets can run without forward motion. But it’s nothing like a turbine. And even if she were sucked onto it, the fronts of the slats aren’t in motion so she would be prevented from entering, not ground up like a turbine. Her head would block the air intake so the slats would shut, and the next cycle would be over-rich and unable to detonate. And even if it did deflagrate, the slats would be shut so the explosion would go out the back and with zero air entering there can’t be a second cycle.
Background Pony #83A6
@Princess Tuna
 
Actually that’s the joke here, the fact it’s an insane design for a jetpack. The artist and I were joking about story ideas for this character, one of which eventually came down to trying to get her airborne Kerbal Space Program style.
Princess Tuna
Duck - They told me to stop shitposting, but I didn't listen!

the artist doesn’t know anything about how planes work.
 
see that big hole behind her head ? that’s the engine, its sucks in air and blows it out to gain speed/power.
 
if this pony turned the engine on right now, her head would be sucked in and killed her.