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1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:51 am UTC
by HES
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Title-text: Every year: 'It's <year>--I want my jetpack [and also my free medical care covering all my jetpack-related injuries]!'

It's all about the foot-rockets.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:53 am UTC
by glasnt
Easy, just invent the boots from Portal
https://www.youtube.com/watch?v=nd1m5_n9P9w

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:54 am UTC
by rhomboidal
I wouldn't mind the crispy calves as much as the incinerated buttocks. Roasted marshmallows -- NOT.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:56 am UTC
by HES
glasnt wrote:Easy, just invent the boots from Portal

Great for landings, but are they rocket-proof?

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 6:23 am UTC
by da Doctah
HES wrote: Every year: 'It's <year>--I want my jetpack


Starting next year, this will be replaced by "Where's my hoverboard".

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 7:12 am UTC
by RAGBRAIvet
da Doctah wrote:
HES wrote: Every year: 'It's <year>--I want my jetpack

Starting next year, this will be replaced by "Where's my hoverboard".

I was gonna say that!!!

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 7:29 am UTC
by keithl
What if we use more power?
Image
"In the direct drive nuclear jet engine, compressed air would flow directly over the hot reactor. Lightweight, but very dangerous." Image: The Department of Energy via wikipedia.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 11:08 am UTC
by Quicksilver
RAGBRAIvet wrote:
da Doctah wrote:
HES wrote: Every year: 'It's <year>--I want my jetpack

Starting next year, this will be replaced by "Where's my hoverboard".

I was gonna say that!!!
We must all be Australians, Seth Sentry's been saying this for years:
http://www.youtube.com/watch?v=eOH15_pqWZ4

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 11:32 am UTC
by cellocgw
"Calf Shield" and my first thought is, is that something used in the production of veal? :oops:

Besides, I saw Sean Connery use a jetpack quite successfully back in the 60's. It's in the opening to Thunderball for you youngsters.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 11:56 am UTC
by Eternal Density
RAGBRAIvet wrote:
da Doctah wrote:
HES wrote: Every year: 'It's <year>--I want my jetpack

Starting next year, this will be replaced by "Where's my hoverboard".

I was gonna say that!!!

My thoughts were, "They'd better have flying cars and hoverboards ready for next year. And Pepsi Perfect". (though it better not be 50 bucks a bottle)
At least I've already owned a lenticular rainbow hat for several years. (Actually ThinkGeek now sell them, thought they're the same price as from bttf.com)

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 12:14 pm UTC
by teelo
Inventing teleportation is easy, the hard part is a shield against loss of the soul.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 12:34 pm UTC
by Whizbang
I think the important distinction here is "jet pack" vs "rocket pack".

Jet pack: Jets of gas/liquid ejected at high speeds to create lift

Rocket Pack: Combustion fuel (rocket fuel?) used to generate thrust similar to a rocket.

Jet Pack: Hard to control, but safe(ish). Not very high altitudes, <1 minute flight time .

Rocket Pack: Hard to control, not safe (see comic, and the "Rocketeer" movie), high altitudes, long flight times.

Jet Pack: Many have been developed and successfully used, though not mass produced.

Rocket Pack: We're not really looking at market applications right now.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 12:41 pm UTC
by Envelope Generator
There was a promising propeller pack project but its development was cut short.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 12:45 pm UTC
by Whizbang
Envelope Generator wrote:There was a promising propeller pack project but its development was cut short.


I see what you did there.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 12:54 pm UTC
by cellocgw
Whizbang wrote:
Envelope Generator wrote:There was a promising propeller pack project but its development was cut short.


I see what you did there.
<-- thanks, Cap't Obvious.
punsaw_smiley.gif
punsaw_smiley.gif (12.43 KiB) Viewed 7754 times

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 3:09 pm UTC
by keldor
You see, this is the problem with free healthcare - the rest of us end up being the ones to pay for his jetpack-related injuries.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 3:56 pm UTC
by jano
Whizbang wrote:I think the important distinction here is "jet pack" vs "rocket pack".

Jet pack: Jets of gas/liquid ejected at high speeds to create lift

Rocket Pack: Combustion fuel (rocket fuel?) used to generate thrust similar to a rocket.

Jet Pack: Hard to control, but safe(ish). Not very high altitudes, <1 minute flight time .

Rocket Pack: Hard to control, not safe (see comic, and the "Rocketeer" movie), high altitudes, long flight times.

Jet Pack: Many have been developed and successfully used, though not mass produced.

Rocket Pack: We're not really looking at market applications right now.


Mafalda using a selfmade jet pack in a cartoon by Quino:

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 3:58 pm UTC
by cantab314
"free medical care covering all my jetpack-related injuries"

I have that. I call it the NHS

Also,
Whizbang wrote:Jet Pack: Hard to control, but safe(ish). Not very high altitudes, <1 minute flight time .
Rocket Pack: Hard to control, not safe (see comic, and the "Rocketeer" movie), high altitudes, long flight times.
I think you've got these the wrong way round somewhat. At low speeds (and "low" here still covers speeds up to Mach 3 or higher) rockets are woefully fuel-inefficient compared to air-breathing jet engines, and thus a rocket pack would offer shorter flight times than other sorts of jet pack.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:26 pm UTC
by Xenomortis
Yeah, I imagine a rocket is much more "all or nothing".

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 4:28 pm UTC
by HES
cantab314 wrote:...and thus a rocket pack would offer shorter flight times than other sorts of jet pack.

Unless you achieve orbit.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 6:18 pm UTC
by Pfhorrest
Screw hoverboards next year, I want my flying time-travelling DeLorean.

Then I'll have hoverboards back in 1985 when they would have been actually useful.

Re: 1382: Rocket Packs

Posted: Mon Jun 16, 2014 6:48 pm UTC
by rcox1
"my backpack got jets, I'm Bobba the Fett.'

The burning of the body is the second thing I think of, and one chalks it up to just not thinking about it. The first is simple fuel consumption. I think that my back would probably fall off it I used a jet pack.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 12:37 am UTC
by Essah
da Doctah wrote:
HES wrote: Every year: 'It's <year>--I want my jetpack


Starting next year, this will be replaced by "Where's my hoverboard".


It's full of Eels

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 12:53 am UTC
by rmsgrey
Essah wrote:
da Doctah wrote:
HES wrote: Every year: 'It's <year>--I want my jetpack


Starting next year, this will be replaced by "Where's my hoverboard".


It's full of Eels


There's a rocket-horse in aisle five.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 1:10 am UTC
by ycc
Obligatory Jetman video...

youtube(dot)com/watch?v=x2sT9KoII_M

I don't see any calf guards. :D

Rant: Why does XKCD forum think that any link to youtube is automatically spam? This is a normal video...

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 4:39 am UTC
by RAGBRAIvet
Envelope Generator wrote:There was a promising propeller pack project but its development was cut short.

Along with the pilot, probably.....

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 4:43 am UTC
by RAGBRAIvet
This
https://www.youtube.com/watch?v=bKHz7wOjb9w&feature=kp
is cooler than either a jetpack *OR* a hoverboard.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 10:50 am UTC
by PinkShinyRose
keldor wrote:You see, this is the problem with free healthcare - the rest of us end up being the ones to pay for his jetpack-related injuries.

But if he kills himself using it in his 50's or 60's he pays during large parts of his working life without him using the heavy needs elderly people part of health care...

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 3:22 pm UTC
by mathmannix
RAGBRAIvet wrote:
Envelope Generator wrote:There was a promising propeller pack project but its development was cut short.

Along with the pilot, probably.....

Oh, now I see what you did there.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 3:46 pm UTC
by SecondTalon
ycc wrote:Rant: Why does XKCD forum think that any link to youtube is automatically spam? This is a normal video...

Because you're too lazy to read the rules. Particularly #3

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 3:47 pm UTC
by HES
PinkShinyRose wrote:But if he kills himself using it in his 50's or 60's he pays during large parts of his working life without him using the heavy needs elderly people part of health care...

(Warning - TVTropes link below)
How gracious of all those TV cops who get killed three days before retirement!

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 4:59 pm UTC
by Pfhorrest
That could make an interesting story. A cop working in a district where cops have a tendency of dying in the line of duty mere days before retirement decides to investigate that improbable pattern and uncovers a far-reaching conspiracy to save the department from having to pay retirement benefits...

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 5:01 pm UTC
by BlitzGirl
HES wrote:
PinkShinyRose wrote:But if he kills himself using it in his 50's or 60's he pays during large parts of his working life without him using the heavy needs elderly people part of health care...

How gracious of all those TV cops who get killed three days before retirement!

Cops with jetpacks?

Also, if anyone follows that link they will be Lured into a Trap and may find themselves having to try and Escape from the Crazy Place but alas... it will be too late. They'll be Lost at Sea. For TVTropes is nought but a Hopeless Boss Fight, as #609 warns us.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 5:06 pm UTC
by HES
Sorry BG, I was going to leave a warning but got distracted Chasing A Butterfly.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 5:08 pm UTC
by Pfhorrest
Those who have managed to escape TVtropes before no longer need to even follow the links back to it; just hover over it, see that it goes to the TVtropes article by that name, and remember "oh yeah, that trope".

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 5:17 pm UTC
by BlitzGirl
But TVTropes is edited and changed so frequently, it doesn't take much to get sucked back in!

I'm sure it won't be long before I Want My Jet Pack is updated to include a mention of this week's title-text.

Re: 1382: Rocket Packs

Posted: Tue Jun 17, 2014 6:36 pm UTC
by Envelope Generator
Whew, I managed to close the last tvtropes tab about ten minutes ago. That was another Hour And A Half I'll Never Get Back.