View Full Version : Discussion 3D with a REAL SIZE helicopter
alexander
Nov 07, 2007, 04:19 AM
http://www.youtube.com/watch?v=RGu45s1_QPU
Enjoy :)
OllieTY
Nov 07, 2007, 05:30 AM
Bo-105, right?
Whata nice little heli.
powerlines
Nov 07, 2007, 07:18 AM
Said it b4 and I say it again..
NOT WIT ME IN DARE!!
LATER
xodarap1
Nov 07, 2007, 11:24 AM
:) Well, if that pilot crashes, he won't have to worry about waiting for replacement parts. :D
pinolefm1
Nov 07, 2007, 01:13 PM
Very cool :) \
Steve
write2dgray
Nov 07, 2007, 03:16 PM
That is definitely the most insane heli flying I have ever seen! Wow!
Almaz
Nov 08, 2007, 05:35 AM
No Tic-Tocs :( It looks more stable than 450 size :p
aaronredbaron
Nov 08, 2007, 05:25 PM
I saw it in person at the air races in San Diego about a month ago. It is truly incredible in person!
ToxicBanana
Dec 19, 2007, 10:35 AM
Safe as long as they always maintain a positive pitch.
So no tics tocks :(
trebien
Dec 19, 2007, 12:49 PM
Well, no fair. Looks like it comes with an all-metal head in stock form.
;)
mnowell129
Dec 19, 2007, 04:03 PM
Safe as long as they always maintain a positive pitch.
So no tics tocks :(
Not so.
rated -1G
http://www.redbullusa.com/#page=ArticlePage.1165622311204-62961151.0
In order to perform demonstrations at public events, Aaron’s helicopter underwent a complete engineering analysis in compliance with the Federal Aviation Administration. Engineers gathered and studied a labyrinth of test data. Ultimately, they stood with the answers they were looking for:
The Eurocopter BO-105 CBS could carry a load of positive 3.1 Gs and negative 1.0 Gs and Red Bull had a new flight demonstration phenomenon.
The approval process cleared the way to further explore the BO-105 CBS aerobatic envelope. In addition to the loops and rolls, Aaron now could make the helicopter go through almost the entire regimen of maneuvers previously reserved for fixed wing aircraft. The Split-S, Immelman, Half Cuban Eight and even the challenging Lomcevak, slightly modified by Aaron for the helicopter, were all possible.
clicky
Dec 20, 2007, 02:59 PM
I am sorry - so it can do negative pitch or not?
-1G doesn't say negative pitch but only negative force... Right?
TachyonDriver
Dec 20, 2007, 06:57 PM
True, but I'm sure that the heli has some negative pitch available. OK we're not talking -10 degrees here, but maybe -2 or -3, enough for autorotations which the full size ships can do.
Rickenbacker
Dec 25, 2007, 04:26 AM
Full size helis don't have negative pitch, they autorotate with a very slight positive pitch and some forward speed
OICU812
Dec 26, 2007, 03:54 AM
Is this the most posted video on the net or what? Or should I say most reposted.....
sypher75
Jan 04, 2008, 12:21 PM
I think whats being said here, and there is some confusion about the artical quoted by Mnowell129. The Heli can cope with 3gs of force exerted on its airframe and blades , and only -1g of negative of force . Any more than -1g would result in a tail boom strike from the main rotors , so nothing to do with pitch of the blades .
As Rickenbaker said they dont have a negative pitch , they rely on the air rushing throught the blades with forward movement to build up enough inertia to carry out an Autorotation .
Vitter
Jan 07, 2008, 01:42 PM
:eek: Regardless of + or – pitch or Gs that was cool! :cool:
Vitter
zen@lanset.com
Jan 14, 2008, 04:07 PM
Here's another BO 105 video on YouTube.
http://youtube.com/watch?v=lXNCZlQcvGw
If you go to the videographer's web site you can see statistics on this 'high unit cost' helicopter that is all the rage for a tactical anti-tank role:
http://www.fffgrupe.de/menu/demo_trailer.html
clicky
Jan 14, 2008, 04:49 PM
Crazy! If that is not CGI or some clever camera/filming technique then... I was just waiting for guy to do stall turn over these pines and return back to the camera! LOL...
zen@lanset.com
Jan 14, 2008, 07:23 PM
I believe the helicopter is being flown by a German military pilot.
Notice that in the very beginning of the video the heli is inverted!
The BO 105 has two engines, by the way, which is how it develops so much power so quickly.
clicky
Jan 15, 2008, 04:14 AM
I believe the helicopter is being flown by a German military pilot.
I am sure that this flying is not just boring military routine. That guy certainly had fun!
Notice that in the very beginning of the video the heli is inverted!
I've dismissed it immediately not being 100% sure that it wasn't just camera angle. Pity it wasn't repeated later if nothing but for confirmation.
The BO 105 has two engines, by the way, which is how it develops so much power so quickly.
One can see that it is a bit overpowered. I don't know what is that remainding me of... Maybe little (and bigger) rc helis? LOL :)
zen@lanset.com
Jan 15, 2008, 11:03 AM
I am sure that this flying is not just boring military routine. That guy certainly had fun!
The BO 105 is missioned to patrol narrow valleys that are Russia's natural invasion routes. In other footage on the videographer's web site you can see the fully-armed BO 105 lurking in trees and shooting a target with rockets mounted on short wings projecting from the fuselage. And more very low altitude flying. Military pilots that navigate those narrow, heavily wooded valleys are doubtlessly selected for their ability to jink and weave at high speed. Much like supersonic fighter pilots in the US Navy and Air Force.
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