Possibility of an alternate power system?

Hi,

( Firstly )  - please excuse what might be a really stupid  question - but, since I'm new to all of this... I cant help thinking....

Isn't there some way ( even on a very small scale ) to use a combination of a small 2 stroke powered motor ( or a typical RC gas powered engine ) to spin a small generator and thus create power to assist in "trickle charging "  - or even powering a quad?

I understand there is a weight issue, but I'm thinking the right combination of ESC and motors ( electric ) and prop size could possibly provide enough grunt to lift the thing.

If this were possible, then using a real liquid fuel would ONLY make the drone progressively lighter  compared to the total weight at the start  as it consumes its supply of fuel - in the meantime,

While I'm at it - what about using DC to AC inverter technology some how to an advantage in power output?

 - Just asking.. lol!

[ there are no stupid questions -  the only time a question is stupid, is when you should have asked - but you didn't.]

Cheers!

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • It is important to find best inverter generator which fulfill your requirement. This discussion share valuable information on inverters. You can check review for different inverters here.

    VertaMax 1500 Watt (3000W Surge) 12V Power Inverter DC to 115 AC Car, Solar, Off-Grid, RV, Back Up…
    VertaMax 1500 Watt power inverter comes with an LED display that shows battery voltage and wattage, AC power consumption so that you can monitor powe…
  • -Technology Submission - State of the Art - Novel InFlow Tech - Featured Project Development;

    *Wordpress Blog State of the Art Novel InFlow Gearturbine Imploturb...

    3691331323?profile=original

    *1; Gearturbine Project, Rotary Turbo, Have the similar basic system of the Aeolipilie Heron Steam Turbine device from Alexandria 10-70 AD · With Retrodynamic = DextroRPM VS LevoInFlow + Ying Yang Way Power Type - Non Waste Looses · 8X/Y Thermodynamic CYCLE Way Steps. 4 Turbos, Higher efficient percent. No blade erosion by sand & very low heat target signature Pat:197187IMPI MX Dic1991 Atypical Motor Engine Type. |/

    3691318917?profile=original

    *2; Imploturbocompressor; One Moving Part System Excellence Design - The InFlow Interaction comes from Macro-Flow and goes to Micro-Flow by Implossion - Only One Compression Step; Inflow, Compression and outflow at one simple circular dynamic motion / New Concept. To see a Imploturbocompressor animation, is possible on a simple way, just to check an Hurricane Satellite view, and is the same implo inflow way nature. 

  • Hybrid electric power sources have been discussed in some length before in this venue.  The bottom line is: not only are fossil fuel engines feasible for aviation on-board power generation (high energy vs. mass ratio), but they're IN USE today.  Adapting one on a small scale for an electric multicopter has yet to be done commercially, but the basic physics calculations are compelling.

    http://diydrones.ning.com/forum/topics/confusion-over-engine-sizes-...

  • Hi there 

    Im new here Ive always been wanting to make a UAV with the intention of using Hydrogen cells I know they use them in RC cars and was going to experiment with the idea and thought this might be some thing you would like to look upon for alternative power.

    Link below is to the site witch sells these little power plants i dont know to much about them as yet need to look into it.

    http://arcolaenergy.com/store/product_info.php?cPath=&products_...

    Hope this helps/Inspires some one

    Jamie

  • Hi rick.

    I too have thought about doing something like what you mentioned above. i found this tiny engine on youtube that can possibly, with some mods, run a small generator that makes enough power to feed 3 motors, a kk2 board, 3-4 esc's, and the receiver. who knows, it might work?

    http://youtu.be/ph2PMs2-7G4

  • Funny enough, I brought up a very similiar idea of using a stripped out Honda inverter generator in this other thread.

    http://diydrones.com/forum/topics/selection-of-suitable-gas-engine?...

    Being that it's a Honda, already built reasonably light once you remove all the housing, inverter and controls to just a bare engine and the alternator, one could easily build a decent power source. No, it's not as powerful as a 2 stroke, but at least it could be a start to a rather large drone with Honda reliability. Some quick searching for cheap inverters led me to this gem, a 2 stroke $299 version that surely is lighter than the 4 stroke when stripped down to just the bare minimum. 

    http://www.northerntool.com/shop/tools/product_200394824_200394824

     

    One interesting aspect is the ratings for power. Since we know this is likely a 3 phase alternator, rectified to DC, then converted to AC, I'm thinking the DC portion is more than the 900watt rating (has to be for losses alone). I'm not sure how voltage control is implemented or if they just let it free runs say 90-180 volts DC, and expect the inverter section to handle the final output.

  • Rick, this is not a stupid question at all.  In fact, you're discovering "the elephant in the room" with regards to vehicle power (flying or not).  No electrical storage medium can begin to approach the energy density (joules/mass) of fossil fuels.  It's not even close.

    The reason electric flight in general, and multicopters specifically, are so popular, is the relative ease of precision control.  Well, that and less noise, no fumes, no volatile chemical handling, etc.  But if you want heavy payload capability and long flight durations, a "series hybrid" is, at least conceptually, an excellent solution for a power source.

    Unfortunately, I am not aware of anyone attempting this on a model scale.  On a (much) larger scale, auxiliary power units, consisting of a turbine engine and an attached electric generator, are used in most large commercial aircraft instead of large batteries for electric power when the main engines are not running.

    As a concept, I think this is a wonderful idea.  As a practical matter, unless you have expertise in power generation (or lots of time and money to experiment), adding a bit more battery to your craft and enhancing the efficiency of the system is the most direct route to a longer flight duration.

  • Rather than trickle charging, which is likely to be impractical especially if multi cell lipos are involved, you'd likely be better off powering the unit with it or using the weight penalty to increase existing capacity.

This reply was deleted.

Activity

DIY Drones via Twitter
RT @Struktur3D: We have just posted on @DIYDrones for the first time in a long time. Continuing with our search for a #lasercutting service…
46 minutes ago
DIY Robocars via Twitter
RT @chr1sa: The dev team is having fun with virtual @DIYRobocars track generation with Unity on the @donkey_car discord: https://t.co/l0Jd9…
Wednesday
DIY Drones via Twitter
Review of the new Nivida Jetson NX for robocars https://t.co/bWjd3sH2o4
Tuesday
DIY Robocars via Twitter
RT @chr1sa: My review of the new @NVIDIAEmbedded Jetson Xavier NX in robotics and @DIYRobocars applications https://t.co/O7TfJZhiF9 https:/…
Monday
DIY Drones via Twitter
RT @chr1sa: Somehow I missed this, but last week @Nvidia released a new version of its Isaac robot development framework. Lots of new Lidar…
Monday
DIY Robocars via Twitter
RT @Smartphone89: DonkeyCar Racing League Korea #donkeycar @diyrobocars https://t.co/mDlHDR1d98
May 29
Jørn Ramnæs liked VIDEO LINK's profile
May 28
Mark Harrison left a comment on Moderators
"Wow, Ning2 looks really great on mobile. I had sort of drifted away as my browse-time went more on my phone, so this is great."
May 28
Hank Deucker left a comment on PIXHAWK
"I am sure most will say not again, Pixhawk telemetry. I do need help and all can be reassured that I have spent many hours scouring the net for useful information. I am not new at quadcopter flying, I started in 2012 and have progressed through many…"
May 28
DIY Robocars via Twitter
https://t.co/rLmFr8M2UK
May 28
DIY Drones via Twitter
Welcome to the new DIY Drones design!. You may have noticed that DIY Drones looks a little different today. That's… https://t.co/cg2EmeDGMQ
May 27
DIY Drones via Twitter
New! Online Training on Drones for Disaster Response https://t.co/brqRuujjY2
May 26
DIY Robocars via Twitter
https://t.co/8EMCvYW6oz
May 25
DIY Robocars via Twitter
RT @OttawaAVGroup: We are going to try something new this week. We will be having a drop-in style meeting Wednesday @ 7-9pm EST. Pop in and…
May 25
DIY Robocars via Twitter
RT @tawnkramer: Thanks Everyone for another fun virtual race! Amazing Ai racers competing head-to-head, Virtual Makers Fair event. Catch us…
May 23
DIY Robocars via Twitter
RT @make: Find out the latest from @diyrobocars at 10am PT from @chr1sa of @3DRobotics on Virtually Make Faire! #makerfaire #maketogether #…
May 23
More…