Turbulence Detection/Reporting?
02-01-2011, 12:21 PM
#1
Prime Minister/Moderator
Thread Starter
Joined APC: Jan 2006
Position: Engines Turn Or People Swim
Posts: 39,497
Turbulence Detection/Reporting?
Anyone know of any aircraft type which uses onboard accelerometers to report turbulence intensity?
How about advanced radar (or laser) systems to detect turbulence ahead of the aircraft?
Not talking about LLWS, but normal turbulence, including CAT.
How about advanced radar (or laser) systems to detect turbulence ahead of the aircraft?
Not talking about LLWS, but normal turbulence, including CAT.
02-01-2011, 12:28 PM
#2
Gets Weekends Off
Joined APC: Dec 2009
Position: 127.0.0.1
Posts: 2,115
Originally Posted by rickair7777
Anyone know of any aircraft type which uses onboard accelerometers to report turbulence intensity?
How about advanced radar (or laser) systems to detect turbulence ahead of the aircraft?
Not talking about LLWS, but normal turbulence, including CAT.
How about advanced radar (or laser) systems to detect turbulence ahead of the aircraft?
Not talking about LLWS, but normal turbulence, including CAT.
02-01-2011, 02:20 PM
#3
Moderator
Joined APC: May 2006
Position: ATP, CFI etc.
Posts: 6,056
I read about some research on it a few years ago and LIDAR systems do exist. However I think they are not certified or ready for implementation.
NASA's ACLAIM research (1999):
"CTI, with NASA/Dryden, has developed the Airborne Coherent Lidar for Advanced Inflight Measurements (ACLAIM) which was recently flight tested aboard a research aircraft."
Systems mentioned in a 2007 AIAA paper:
"Japan Aerospace Exploration Agency (JAXA) has been developing an airborne all-fiber pulsed coherent Doppler lidar
(CDL) with Mitsubishi Electric Corporation (MELCO) to detect clear air turbulence (CAT) at high altitudes where jet transports cruise."
"Thales Avionics and ONERA have been developing a demonstrator of an airborne all-fiber continuous-wave (CW) coherent Doppler lidar (CDL) called DALHEC to measure three-axis TAS components, and have conducted helicopter flight tests."
NASA's ACLAIM research (1999):
"CTI, with NASA/Dryden, has developed the Airborne Coherent Lidar for Advanced Inflight Measurements (ACLAIM) which was recently flight tested aboard a research aircraft."
Systems mentioned in a 2007 AIAA paper:
"Japan Aerospace Exploration Agency (JAXA) has been developing an airborne all-fiber pulsed coherent Doppler lidar
(CDL) with Mitsubishi Electric Corporation (MELCO) to detect clear air turbulence (CAT) at high altitudes where jet transports cruise."
"Thales Avionics and ONERA have been developing a demonstrator of an airborne all-fiber continuous-wave (CW) coherent Doppler lidar (CDL) called DALHEC to measure three-axis TAS components, and have conducted helicopter flight tests."
Last edited by Cubdriver; 02-01-2011 at 03:18 PM.
02-02-2011, 04:46 AM
#5
Gets Weekends Off
Joined APC: Sep 2005
Position: A320 Captain
Posts: 1,114
The Airbus uses Predictive Windshear (Moving Water Molicules) and paints it on the radar. Pretty accurate when dodging crap and I'm pretty sure its the same thing Twin Wasp is talking about. Doesn't work for clear air turbulence though. The bus also senses "G" load, thats how the aircraft is controlled in normal law. If it leaves normal law due to severe turbulance it can not be put back in. So yes it does sense movement and will even send the company a message when it exceeds it. It is useless to us in flight since G's can't really be translated to turbulance but as we found out a few months ago a really really hard landing will set it off and now we get a print out in the cockpit that basically says MX required.
If I remember correctly the G load is also displayed on the lower ECAM when it is close to exceeding limits, someone correct me if I'm wrong.
If I remember correctly the G load is also displayed on the lower ECAM when it is close to exceeding limits, someone correct me if I'm wrong.
Thread
Thread Starter
Forum
Replies
Last Post
