"Doing Loops in a Tomorrowland Jet Pack Might Kill You" Topic

"Yes, there are jet packs in the movie Tomorrowland. I don't think that's really a spoiler since you see jet packs in the trailer. Also, I'll be honest—I think these might be rocket packs instead of jet packs (rocket packs don't need external fuel like air).

But who really cares how these jet packs work since they might kill you. I'm not talking about crashing into the ground killing—I mean just plain turning too fast killing you. Yes, it's true. If you have too large of an acceleration—even if you are still in the air, it could kill you.

In this case it would be the acceleration caused by the circular motion of these vertical loops…"

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Amicalement
Armand

Welcome back, Armand.

When I get my jet pack, or rocket pack, I promise I won't do any loops, or make any rapid changes in direction or speed. Nice and easy, that'll be my style.

Horizontal attitude is really stupid and just partakes of "I'm Superman" aesthetics.

A jet/rocket pack would require almost one hundred percent of its thrust just to keep the passenger aloft. Only a teensy fraction of the energy would be used to go horizontally and change direction; well, aside from "up", that is; each time you increase altitude you engage huge amounts of available energy and thus use up huge amounts of fuel. But horizontal directional changes are small uses of both. Increasing speed without losing altitude would be another biggie fuel consumer.

You would never want to do a loop. Because once over the top and starting down, all you do is drop like a rock. And any propulsion would increase the drop. Pulling out of that one really would be problematic. The Gs alone would kill you unless you had miles to recover.

I can see a "flip", where you go up and suddenly shut off the power as you kick your legs out in a swinging motion, and rotate around your pack; then as you drop feet first, you reengage the power and arrest the drop. Why? For showing off, of course.

Packs don't fly like aircraft with fixed wings. They are more like helicopters but with thrust instead of lift from rotating blades….

Look Ma no hands… sPlAt!!

Thanks my friend!. (smile)

Amicalement
Armand

Welcome home Armand, we missed you.

If you by me a jet pack I will test it out and let you know…