Go Back  PPRuNe Forums > Aircrew Forums > Rotorheads
Reload this Page >

Home made Co-axial helicopter

Rotorheads A haven for helicopter professionals to discuss the things that affect them

Home made Co-axial helicopter

Old 13th Sep 2022, 18:07
  #1 (permalink)  
Thread Starter
 
Join Date: Nov 2006
Location: Bristol/Bath
Age: 59
Posts: 84
Received 0 Likes on 0 Posts
Home made Co-axial helicopter

This guy is making progress.... I can't find the earlier thread to add this to, but I know it's been on here at earlier stages in its manufacture! (Mods, feel free to move this if appropriate)

JBL99 is offline  
Old 13th Sep 2022, 20:08
  #2 (permalink)  
 
Join Date: Nov 2000
Location: USA - Mexico
Posts: 130
Likes: 0
Received 0 Likes on 0 Posts
He needs to shorten the cyclic. He is moving his arm to control the helicopter. I recommend the arm on his leg and move his wrist for control. My 2 cents.
Lama Bear is offline  
Old 14th Sep 2022, 08:55
  #3 (permalink)  
 
Join Date: Apr 2000
Location: EGDC
Posts: 9,568
Received 43 Likes on 22 Posts
Agree Lama Bear - stiff arming the cyclic isn't a good control method
crab@SAAvn.co.uk is offline  
Old 14th Sep 2022, 10:43
  #4 (permalink)  
 
Join Date: Feb 2000
Location: UK
Posts: 1,573
Likes: 0
Received 0 Likes on 0 Posts
+1 for 'wrist on knee' cyclic.
Seems to be remarkably little airframe vibration ... comparison with one hour Kaman Husky winching sortie, when, from memory, every component appeared to be moving in opposition to every other one !
Well done !
Cornish Jack is offline  
Old 14th Sep 2022, 12:34
  #5 (permalink)  
 
Join Date: Nov 2007
Location: Australia
Posts: 2,412
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by Lama Bear View Post
He needs to shorten the cyclic. He is moving his arm to control the helicopter. I recommend the arm on his leg and move his wrist for control. My 2 cents.
He comments on the cyclic issue in other vids. It appears he keeps his elbow to his body.

Flying Binghi is offline  
Old 15th Sep 2022, 09:46
  #6 (permalink)  
 
Join Date: Apr 2000
Location: EGDC
Posts: 9,568
Received 43 Likes on 22 Posts
It appears he keeps his elbow to his body.
Not as effective as wrist on knee as your arm isn't relaxed and you are using the big muscles in your arm and shoulder instead of the smaller muscles in your wrist and hand which allow for finer motor control.
crab@SAAvn.co.uk is offline  
Old 15th Sep 2022, 17:57
  #7 (permalink)  
 
Join Date: Jun 2004
Location: UK Scotland
Age: 61
Posts: 191
Likes: 0
Received 0 Likes on 0 Posts
Maybe the controls are too heavy for shorter cyclic and he needs the leverage as controls unlikely to be hydraulically or electrically assisted etc
R
RINKER is offline  
Old 15th Sep 2022, 18:02
  #8 (permalink)  
 
Join Date: Apr 2000
Location: EGDC
Posts: 9,568
Received 43 Likes on 22 Posts
I should imagine that thing is a good bit lighter than an R22 or similar light helicopter and the control loads in the hover aren't high on that - having said that, without having a go in his homebuilt creation it would be difficult to say for sure.
crab@SAAvn.co.uk is offline  
Old 16th Sep 2022, 02:18
  #9 (permalink)  
 
Join Date: Nov 2007
Location: Australia
Posts: 2,412
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by [email protected] View Post
I should imagine that thing is a good bit lighter than an R22 or similar light helicopter and the control loads in the hover aren't high on that - having said that, without having a go in his homebuilt creation it would be difficult to say for sure.
He comments on the ‘weight’ of the controls in prior videos.

As part of on-going improvements He changed the seating position for better cyclic control. I guess he has many more modifications in mind..
Flying Binghi is offline  
Old 16th Sep 2022, 07:26
  #10 (permalink)  
 
Join Date: Apr 2000
Location: EGDC
Posts: 9,568
Received 43 Likes on 22 Posts
He comments on the ‘weight’ of the controls in prior videos
Ah, OK, I haven't watched all his videos.
crab@SAAvn.co.uk is offline  
Old 19th Sep 2022, 02:44
  #11 (permalink)  
 
Join Date: Nov 2007
Location: Australia
Posts: 2,412
Likes: 0
Received 2 Likes on 2 Posts
Interesting concept. Looks like the design is based on several helicopter ideas. One being the ‘hang glider’ type.

The chap mentions in the videos that it is a design research exercise that will only likely ever get hovered near the ground. Though, the recent death of the young helicopter designer in India shows even low hover has dangers…. Such is the costly evolution of aviation.

Flying Binghi is offline  
Old 19th Sep 2022, 04:09
  #12 (permalink)  
 
Join Date: Jun 2022
Location: Bundanyabba
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Braver than me.
MagsOffTap is offline  

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.