A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Soaring
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Electric Self Launch System



 
 
Thread Tools Display Modes
  #21  
Old June 11th 18, 10:37 PM posted to rec.aviation.soaring
Dave Nadler
external usenet poster
 
Posts: 1,308
Default Electric Self Launch System

On Monday, June 11, 2018 at 2:55:08 PM UTC-6, wrote:
System provided to me by MGM Compro uses Sony US18650VTC6.
Rated capacity 3000mAh. 18 stacks of 28. 57 lb with enclosure and BMS.
Projected performance at 25KW draw is 12 minutes.


Thanks Hank - Do they provide any specs (feature list) for BMS?
Ads
  #22  
Old June 12th 18, 12:07 AM posted to rec.aviation.soaring
[email protected]
external usenet poster
 
Posts: 1,780
Default Electric Self Launch System

On Monday, June 11, 2018 at 5:37:08 PM UTC-4, Dave Nadler wrote:
On Monday, June 11, 2018 at 2:55:08 PM UTC-6, wrote:
System provided to me by MGM Compro uses Sony US18650VTC6.
Rated capacity 3000mAh. 18 stacks of 28. 57 lb with enclosure and BMS.
Projected performance at 25KW draw is 12 minutes.


Thanks Hank - Do they provide any specs (feature list) for BMS?


Yep- there is a manual for it. Sent privately.
UH
  #23  
Old June 12th 18, 12:59 AM posted to rec.aviation.soaring
Dave Nadler
external usenet poster
 
Posts: 1,308
Default Electric Self Launch System

On Monday, June 11, 2018 at 5:07:23 PM UTC-6, wrote:
On Monday, June 11, 2018 at 5:37:08 PM UTC-4, Dave Nadler wrote:
Thanks Hank - Do they provide any specs (feature list) for BMS?


Yep- there is a manual for it. Sent privately.
UH


Thanks Hank!
  #24  
Old October 24th 18, 04:12 PM posted to rec.aviation.soaring
Emir Sherbi
external usenet poster
 
Posts: 32
Default Electric Self Launch System

More updates:


https://www.instagram.com/grasshoppersystem/
https://www.facebook.com/charlysierragolf/

  #25  
Old October 25th 18, 02:48 PM posted to rec.aviation.soaring
[email protected]
external usenet poster
 
Posts: 2
Default Electric Self Launch System

I suppose you will provide strong protection to the elevator linkage. If anything goes wrong in the pylon mountings, or parts get loose, you really don't want to risk interference with the elevator control.
The static and TE lines would also very much benefit from protection.

I admire all those who dare such complex work

Aldo Cernezzi
www.voloavela.it
  #26  
Old October 26th 18, 03:50 AM posted to rec.aviation.soaring
Emir Sherbi
external usenet poster
 
Posts: 32
Default Electric Self Launch System

Aldo,

There will be a very thick floor and sidewalls to reinforce the fuselage structure and that will protect the control rod and cables.
If anything get loose it will stay in the motor bay.

Regards
  #27  
Old October 26th 18, 04:51 AM posted to rec.aviation.soaring
Craig Funston[_3_]
external usenet poster
 
Posts: 74
Default Electric Self Launch System

Emir, great to see you moving forward on your project.

I expect you already know this, but at the risk of being redundant, I’ll post anyways. Just thickening the skins in the motor bay area won’t restore the torsional stiffness of the boom. When the hole is cut for the doors the boom goes from a closed tube shape to an open “C” shape. This dramatically reduces the torsional stiffness and strength of that area. You can demonstrate it to yourself with a cardboard tube..

The factories get around this by adding a pair of vertical walls in the engine bay to form two closed “D” shaped tubes, essentially restoring the lost stiffness.

Good luck with your project. I’m looking forward to hearing how it works out.

Best regards,
Craig
  #28  
Old October 26th 18, 07:52 AM posted to rec.aviation.soaring
Senna Van den Bosch
external usenet poster
 
Posts: 49
Default Electric Self Launch System

Op vrijdag 26 oktober 2018 04:50:09 UTC+2 schreef Emir Sherbi:
Aldo,

There will be a very thick floor and sidewalls to reinforce the fuselage structure and that will protect the control rod and cables.
If anything get loose it will stay in the motor bay.

Regards


This project looks amazing. Do you have any idea of a price that you would like to get for selling such a kit? Also, with any kind of fittings, is there any probability of them getting loose?
  #29  
Old October 26th 18, 01:34 PM posted to rec.aviation.soaring
Emir Sherbi
external usenet poster
 
Posts: 32
Default Electric Self Launch System

Craig,

Thanks for the advice. That is the big issue on the project. Is difficult to obtain the same rigidity of a cone like the boom tail once cut. The reinforcement floor and walls will form 3 different enclosed sections with fibers at 45° from the fuselage line.

After the modifications I will test the fuselage with strain gauges to see the new strain distribution and compare them with the original.
  #30  
Old October 26th 18, 02:05 PM posted to rec.aviation.soaring
Emir Sherbi
external usenet poster
 
Posts: 32
Default Electric Self Launch System


This project looks amazing. Do you have any idea of a price that you would like to get for selling such a kit? Also, with any kind of fittings, is there any probability of them getting loose?


The price of the kit will be around 17.000 USD depending on controller and battery capacity choices without installation.
Now that i left my full time job to continue with this project i can travel to make the modifications by myself.

The fastening part of the fittings will be at plain sight. So if you check out them time to time there must be no problems.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric Self Launching System Emir Sherbi Soaring 0 June 4th 18 04:54 PM
FES&electric system batteries krasw Soaring 33 February 25th 17 05:17 PM
ASW24 - electric valve system Norbert Gulczynski Soaring 1 January 25th 15 02:13 PM
Electric Duct Fan (EDF) Self-Launch Glider? CLewis95 Soaring 26 January 20th 11 07:27 PM
Electric self-launch sailplane CH Soaring 2 September 14th 03 01:49 AM


All times are GMT +1. The time now is 06:36 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 AviationBanter.
The comments are property of their posters.