Clean energy airplanes questions

[Eduard the weeb]

okay so I am not real into airplanes, but I have a question how come airplanes a major contributor pollution if you used a launch system similar to the Gerald R ford with water then wind turbines to create energy for the engines, Because the faster you got the more energy you'd produce creating a cycle, so is there a specific reason this won't work ?

 

if you know anyone into engineer, airplanes, or clean energy can you tag them to explain why this won't work or why  no-one has done it ?

[Guest]

Which grade are you in? Like fifth?

[Thunderpup]

3 minutes ago, Eduard the weeb said:

okay so I am not real into airplanes, but I have a question how come airplanes a major contributor pollution if you used a launch system similar to the Gerald R ford

 

Those catapult systems really work for small fighter craft. 

 

Also those catapult systems only provide a boost to get the plane into the air in lieu of a longer run way.  The jet is still throttled very high and is otherwise burning a similar amount of fuel to a traditional take off.

 

Also wind turbines on a jet wouldn't work because that would be kind of like a perpetual motion machine, which isn't physically possible.  

 

To reduce fuel consumption the more feasible methods are better aerodynamics and lighter materials. 

[DocSwag]

Are your proposing to put something like wind turbines on planes so that when they take off the turbines will generate electricity?

[InertiaSelling]

I'm no expert, but adding wind turbines to an airplane would increase drag dramatically, thus negating the benefits.

[DocSwag]

After searching some stuff up my understanding is that you are proposing to use an electromagnet to catapult a plane and then have turbines on the plane to regenerate the energy used, right?

 

This wouldn't work the way you want it to. Remember conservation of energy. Energy can't be created or destroyed. All these wind turbines are really doing is converting kinetic energy into electrical energy. Since you're converting kinetic energy to something else, these wind turbines are slowing the aircraft down, and you actually end up losing more energy since these turbines aren't anywhere close to 100% efficient.

[Dreaper]

Could solar panels on planes work?

[Guest]

Just now, kelvinhall05 said:

If you're trying to be an asshole, that's not nice. If it a legitimate question, check if he has a birthday on his profile.

Im sorry if i was looking rude, but in my country physics is teached at school starting in grade 7, and there teachers speak about questions like that.

[Eduard the weeb]

On 11/17/2017 at 8:06 AM, Almostbauws said:

Which grade are you in? Like fifth?

9th Kinda just genuinely curious did we learn about this ?

 

On 11/17/2017 at 8:08 AM, DocSwag said:

Are your proposing to put something like wind turbines on planes so that when they take off the turbines will generate electricity?

thats kinda what I was thinking.

[InertiaSelling]

9 hours ago, kelvinhall05 said:

<snip>

Finally something we can all agree on

[Eduard the weeb]

7 minutes ago, Dreaper said:

Could solar panels on planes work?

Maybe IDK they have to be charge before hand mostly because wall planes above clouds have clear sunlight The solar panels would have to charge super fast right?

[mynameisjuan]

As someone who has built many DIY windmills, when current is being drawn from the windmill there is a force resisting the blades from turning. This means that the current might be so high the blades might not even turn creating nothing but drag. 

[DocSwag]

9 minutes ago, Dreaper said:

Could solar panels on planes work?

Theoretically yes. However, I would assume it wouldn't be that easy to use the electricity to actually help make the plane move since the plane does use jet engines, though I could see it being used to help power the electrical portions of the plane.

[Eduard the weeb]

On 11/17/2017 at 8:07 AM, Thunderpup said:

Those catapult systems really work for small fighter craft. 

 

Also those catapult systems only provide a boost to get the plane into the air in lieu of a longer run way.  The jet is still throttled very high and is otherwise burning a similar amount of fuel to a traditional take off.

ohhhh ok 

 

I'm assuming mostly that this is happening on private jets because it would take alot of energy to get something like a 747 up, I am assuming solar panels would be like that in maybe 100-200 years.

[piemadd]

6 minutes ago, Eduard the weeb said:

9th

Northview Highschool GA Kinda just genuinely curious did we learn about this ?

eyyy Ga metoo

 

this is like plugging a light in to a sola panel and then putting it in front of the solar panel

 

it would need an efficiency of over 100%, so it wouldn't work

[knightslugger]

solar aircraft do exist and hold many world records for flight. They are widely based on gliders and electrically driven props.

 

rarely do they hold more than one person though.

[piemadd]

2 minutes ago, Eduard the weeb said:

I'm assuming mostly that this is happening on private jets because it would take alot of energy to get something like a 747 up, I am assuming solar panels would be like that in maybe 100-200 years.

bro planes have been around for 114 years. solar panels are already being put on planes

[Eduard the weeb]

On 11/17/2017 at 8:32 AM, Implosivetech said:

bro planes have been around for 114 years. solar panels are already being put on planes

I meant a 747 because those things are Flipping whales.

 

@Implosivetech WHALE

[knightslugger]

14 minutes ago, Eduard the weeb said:

I meant a 747 because those things are Flipping whales.

there was a time, maybe it wasn't a 747, but they experimented with using a twin blade turboprop instead of a turbojet. I think NASA was doing it.

 

But it really went nowhere.

 

but think about how many people are on that aircraft the distance it travels. what would that end up as, per person per gallon? Jets aren't really as fuel inefficient as you think.

[Eduard the weeb]

3 minutes ago, knightslugger said:

but think about how many people are on that aircraft the distance it travels. what would that end up as, per person per gallon? Jets aren't really as fuel inefficient as you think.

Yeah I assumed they guzzled some fuel, But I would like the world to stop being so uneco friendly because global warming is a thing and I think airplanes are a major part of that I believe. 

[DocSwag]

1 minute ago, Eduard the weeb said:

because global warming is a thing

If only everyone knew this  

[piemadd]

On 11/17/2017 at 8:33 AM, Eduard the weeb said:

I meant a 747 because those things are Flipping whales.

Boeing isn't going to put solar panels on anything anytime soon. They tried to put an 80% import tax on the most efficient airplane.

 

On 11/17/2017 at 8:33 AM, Eduard the weeb said:

I meant a 747 because those things are Flipping whales.

Boeing isn't going to put solar panels on anything anytime soon. They tried to put an 80% import tax on the most efficient airplane.

[Dylanc1500]

12 minutes ago, Eduard the weeb said:

Yeah I assumed they guzzled some fuel, But I would like the world to stop being so uneco friendly because global warming is a thing and I think airplanes are a major part of that I believe. 

Boeing has moved to aircraft that are more economical for passenger travel, like the 787-8/9/10 with the GEnx. Also the 747-8 itself has been updated with the new turbines and it's much more efficient than previously. They no longer need quad turbines dumping fuel to get them off the ground.

[Thunderpup]

current solar panel technology doesn't generate enough electricity per square foot/meter to offset the added weight to the air craft.  So even trying to create a hybrid system isn't feasible at the moment.  Given how much airline companies spend in fuel cost alone they would jump at such a plane if the technology existed to make it a real thing.  

 

barring some unlikely jump in solar technology the only way an all electric plane could work is if we switched to a non-fossil fuel like hydrogen; which would emit water vapor as it's only by product.

 

Unfortunately hydrogen fuel cell technology isn't quite "there yet". 

[Natsoup]

9 hours ago, Almostbauws said:

Which grade are you in? Like fifth?

 

9 hours ago, kelvinhall05 said:

<snip>

According to my research he is 13 and this is a reasonable question to ask at 13 imo