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Unique Balloon Request
Topic Rating: 0 (0 votes) 
May 28, 2016
12:41 am
KarateMan80
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This Balloon Meets size requirements for Exodus for balloons.  In a dock platform construction the "landing Gear" would be in a "folded up" position.  I am not yet ready to activate it, but I wanted to get an opinion on its sky-worthiness.  It is not a conventional balloon design, but given that the ship it docks with is not conventional either, I needed something unique.  From my calculations, the balloons are large enough to assist in flight, with the help of the "propulsion engines" on each boom arm.  The engines receive fuel through a series of pipes, connected to a tank in the lower part of the fuselage.  This should provide sufficient lift for takeoff, and can be scaled back to maintain elevation and land.  The balloons reduce the thrust requirement for liftoff, allowing for reduced fuel consumption during flight.  Assuming that a block corresponds to a meter, the size of the tank area should give the craft an effective range of a little passed Exodus from its starting position.  This is based on approximations in the efficiency of fuel burn, maximum pitch angle of the 4 booms of 22 degrees, and assumptions that the actual width of the fuel tank walls are actually no greater than 6cm, as the would on a real high altitude craft.  These also take into account the parabolic path of the craft as it rises to its cruising altitude of 180 meters above see level, and the necessity to fly around certain terrain obstacles.  The final assumption is that the balloons are filled with pressurized hydrogen gas, which, though flammable, is lighter than helium gas, and is more capable of offsetting the weight of the fuselage.  As Hydrogen gas decomposes in the presence of regular air, the balloons are sealed from the outside, and pressurized by tanks in each boom.  These tanks can be pressurized as needed from ports near the bases of each boom.  The calculations were perform by my dear friend, who is a recent graduate of NC State University, USA, in Physics and Computer engineering, who is preparing to enter grad school for aero-physics, with a focus in rocketry.Cool

 

All this to say, I think it meets the technical constraints, but I wanted to make sure it also met the aesthetic constraints.

 

The map link is found here.

 

Images below:

May 28, 2016
12:42 am
KarateMan80
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May 28, 2016
12:42 am
KarateMan80
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Forum Posts: 6
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September 12, 2015
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May 28, 2016
12:43 am
KarateMan80
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May 28, 2016
6:04 am
tedisvet
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The design is awesome, having the multiple balloons and all! I think it does not meet the exodus criteria though. The design has to be no more modern than 1800s. I think that maybe if you changed the iron for a type of logs/planks/cobination? Or if you really want the iron I think the balloons should be alot bigger

Just a suggestion, a mod has to give the final answer on this.

 

About the calculation your friend made:

Airworthiness is based on the material used and the relative sizes of the balloons. I assume there are about 150 iron blocks (1 square meter) used in this build. Iron has an approximate weight of 7500kg/m^3.

150m^3*7500kg/m^3 = 1,125,000kg

That's more than 6 boeing 747's. I agree that in minecraft you do not have to meet the physics of nature perfectly. But I think those balloons would have to be quite a bit larger to lift that much iron, even if the iron blocks were half as thick.

Therefor I'd advice again to use wood instead of ironblocks to make it airworthy.

http://imgur.com/Ic4iULO

"Pants? You mean leg prisons."

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