Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

What a Concept, How Many Engines?

Tech Log The very best in practical technical discussion on the web

What a Concept, How Many Engines?

Old 26th Nov 2018, 16:19
  #1 (permalink)  
Thread Starter
 
Join Date: Mar 2018
Location: Central UK
Posts: 1,608
Received 133 Likes on 63 Posts
What a Concept, How Many Engines?

A model, granted, but what a concept!

meleagertoo is online now  
Old 26th Nov 2018, 16:53
  #2 (permalink)  
 
Join Date: Feb 2013
Location: 60 north
Age: 59
Posts: 17
Likes: 0
Received 0 Likes on 0 Posts
Wow
Perfect xMass gift for an old B52 pilot!
BluSdUp is offline  
Old 26th Nov 2018, 19:17
  #3 (permalink)  
 
Join Date: Mar 2002
Location: Florida
Posts: 4,569
Likes: 0
Received 1 Like on 1 Post
How do the rudders work?
lomapaseo is offline  
Old 26th Nov 2018, 20:07
  #4 (permalink)  
 
Join Date: Jan 2008
Location: Denver
Posts: 1,224
Received 12 Likes on 7 Posts
No rudders, just plain vertical stabilizers. Yaw control is via asymmetric thrust across the 9 motors - kinda like the DC-10 in Sioux City. Yaw signal from the "pilot's" RC box throttles up left engines and throttles down right engines to yaw right and vice versa, by way of the programming of the digital flight controllers on each of the 9 part-planes.

Differential elevator across all 9 aircraft for roll control - the elevators act as "trim tabs" to change the wings' angle of attack on the left and right sides. Some lateral roll stability built-in by angling the hinge connections between the wingtips - if one individual aircraft tries to nose up or down, the hinge geometry tends to push it back to nose-level and in line with the others.

If you watch the whole video, at the end there is a link to an "explainer" video that discusses the controls and construction.

Some airplanes are fondly described as "a large group of spare parts flying in close formation." This is the ultimate poster child for that concept.

I'm kinda interested in the airfoil - which seems to be just the proverbial "barn board," except with an additional wrapping or layer around the leading edge to provide a little camber ------===
pattern_is_full is offline  
Old 27th Nov 2018, 14:47
  #5 (permalink)  
 
Join Date: Feb 2000
Location: Alaska, PNG, etc.
Age: 60
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts
That's going to be a handful when it reverts to direct law.
A Squared is offline  
Old 27th Nov 2018, 15:11
  #6 (permalink)  
 
Join Date: Feb 2000
Location: Alaska, PNG, etc.
Age: 60
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by pattern_is_full

I'm kinda interested in the airfoil - which seems to be just the proverbial "barn board," except with an additional wrapping or layer around the leading edge to provide a little camber ------===
Hard to say, but what it looks like from his "explainer" video, is there's really no camber at all, the wing looks like just a piece of rigid foam core board with the leading edge rounded a bit. Same thickness from leading edge to trailing edge.
A Squared is offline  
Old 27th Nov 2018, 21:30
  #7 (permalink)  
 
Join Date: Jan 2008
Location: Denver
Posts: 1,224
Received 12 Likes on 7 Posts
Originally Posted by A Squared
That's going to be a handful when it reverts to direct law.
- Watching the "explainer" video, It occurred to me I'd love to have this guy explain the Airbus laws. While a bit of a hemmer and hawer, he does illustrate his points well.
pattern_is_full is offline  
Old 28th Nov 2018, 18:48
  #8 (permalink)  
 
Join Date: Sep 1998
Location: wherever
Age: 55
Posts: 1,616
Likes: 0
Received 0 Likes on 0 Posts
Oh look! Here is a much bigger one:
FE Hoppy 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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.