Go Back  RCU Forums > RC Airplanes > AMA Discussions
Reload this Page >

Impact Testing

Notices
AMA Discussions Discuss AMA policies, decisions & any other AMA related topics here.

Impact Testing

Old 04-03-2023, 12:58 PM
  #1  
franklin_m
Thread Starter
 
franklin_m's Avatar
 
Join Date: Nov 2005
Location: State College, PA
Posts: 4,564
Likes: 0
Received 1 Like on 1 Post
Default Impact Testing

Came across this today while doing some research. Interesting video of DJI drone completely compromising the leading edge of a regional jet style wing at representative closure speeds.

https://udayton.edu/udri/news/18-09-...in-the-sky.php
Old 04-03-2023, 04:46 PM
  #2  
R_Strowe
Senior Member
 
R_Strowe's Avatar
 
Join Date: Feb 2020
Location: Vermont
Posts: 287
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by franklin_m
Came across this today while doing some research. Interesting video of DJI drone completely compromising the leading edge of a regional jet style wing at representative closure speeds.

https://udayton.edu/udri/news/18-09-...in-the-sky.php
Although I get your point, the article never mentions a Transport category aircraft (which a regional jet would be), only a general aviation craft (a Mooney, a four place single engine aircraft). Which is not built to the same standards.

R_Strowe
Old 04-03-2023, 06:40 PM
  #3  
mongo
My Feedback: (15)
 
mongo's Avatar
 
Join Date: Dec 2001
Location: Midland, TX
Posts: 3,518
Received 82 Likes on 72 Posts
Default

from the 3rd paragraph of the article:
"The test was intended to compare a bird strike and a drone strike, using a drone similar in weight to many hobby drones and a wing selected to represent a leading edge structure of a commercial transport aircraft,"

now, in my book, not exactly a direct comparison, but it is a place for them to start with data accumulation, and evaluation of practices for testing.
Old 04-03-2023, 07:34 PM
  #4  
R_Strowe
Senior Member
 
R_Strowe's Avatar
 
Join Date: Feb 2020
Location: Vermont
Posts: 287
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by mongo
from the 3rd paragraph of the article:
"The test was intended to compare a bird strike and a drone strike, using a drone similar in weight to many hobby drones and a wing selected to represent a leading edge structure of a commercial transport aircraft,"

now, in my book, not exactly a direct comparison, but it is a place for them to start with data accumulation, and evaluation of practices for testing.
Absolutely. But they should still endeavor to be accurate. The wing of say a CRJ has a polished stainless steel leading edge (for bleed air wing anti-icing), and considerably harder than the aluminum leading edge if the Mooney wing.



This is from a goose that just missed going into the engine. The construction of the engine intake lip is comparable to the wing leafing edge. Just to give an idea of what 1 large bird can do.

And yes, I was the Captain on that flight. Unfortunately geese don't come equipped with nav lights or strobes.

R_Strowe
Old 04-03-2023, 07:44 PM
  #5  
speedracerntrixie
My Feedback: (29)
 
speedracerntrixie's Avatar
 
Join Date: Jun 2010
Location: Happy Valley, Oregon
Posts: 9,525
Received 177 Likes on 152 Posts
Default

I’ve had to repair the leading edge ( it’s all leading edge ) of a couple E2C Roto domes after bird strikes. Luckily the damage didn’t get to any load bearing structure. It was simply a matter of cutting out the damaged section after a really nasty clean up and grafting in a new section. Could you imagine a quad impact and having the Lipo ignite in a composite structure?
Old 04-03-2023, 08:39 PM
  #6  
ira d
 
Join Date: May 2003
Location: Maricopa County AZ
Posts: 3,249
Received 5 Likes on 5 Posts
Default

We have never had RC aircraft hit a airliner and it may never happen but I think keeping RC aircraft away from airports is really where the FAA should put its efforts instead
of 400' limits and RID systems. I have always felt if your model is not conflicting with full scale traffic and only overflying private property and places designated for model
operation they should for the most part be left alone.
Old 04-04-2023, 08:26 AM
  #7  
Hydro Junkie
 
Hydro Junkie's Avatar
 
Join Date: Nov 2004
Location: Marysville, WA
Posts: 10,535
Received 130 Likes on 123 Posts
Default

And, while I agree with that in general terms, Ira, the issue isn't with conventional model aircraft. The issue is with multirotor drones that are being flown irresponsibly by those that:
  1. Don't know what the rules are that they must fly under
  2. Don't care what the rules are that they must fly under
I know of at least one confirmed drone strike on a Blackhawk that, if it wasn't for a FOD screen over the engine intake, it would have gone down, in the water, next to one of the major airports in NYC
Old 04-04-2023, 09:38 AM
  #8  
R_Strowe
Senior Member
 
R_Strowe's Avatar
 
Join Date: Feb 2020
Location: Vermont
Posts: 287
Likes: 0
Received 1 Like on 1 Post
Default

There was a drone strike on a Beech 1900 at Quebec City several years ago as well.

R_Strowe
Old 04-05-2023, 05:04 PM
  #9  
combatpigg
Senior Member
My Feedback: (3)
 
combatpigg's Avatar
 
Join Date: Nov 2003
Location: arlington, WA
Posts: 20,388
Received 27 Likes on 25 Posts
Default

Is the only reason to question this report to quibble about degree of danger that colliding with a model drone could cause to ANY full scale plane...?

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


Thread Tools
Search this Thread

Contact Us - Manage Preferences - 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.