Climbing after take-off
Printed From: Just Flight Forum
Category: Just Flight Products
Forum Name: TB10 Tobago and TB20 Trinidad
Forum Description: Discussion area for TB10 Tobago and TB20 Trinidad
URL: http://forum.justflight.com/forum_posts.asp?TID=30997
Printed Date: 05 May 2024 at 3:19pm
Topic: Climbing after take-off
Posted By: bpieke
Subject: Climbing after take-off
Date Posted: 21 Sep 2016 at 11:56pm
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To the TB20 pilots out there.. How do you keep the airplane from wanting to climb at 1000+ ft/min after take off and gear up? Is it a matter of trim, or reducing throttle, or raising the flaps earlier? I find myself fighting the airplane, pushing the yoke forward and still climbing.. |
Replies:
Posted By: bpieke
Date Posted: 22 Sep 2016 at 12:13am
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Just flew the TB10, two pilots, 26 gallons of fuel, and the autopilot cannot hold the airplane in ALT mode.. the trim is full forward, and the airplane just wants to climb.. What am I doing wrong? |
Posted By: Martyn
Date Posted: 22 Sep 2016 at 10:51am
What is your airspeed and power setting? The autopilot should be capable of maintaining altitude unless a very higher power setting is coupled with a high airspeed (i.e. outside of the green arc), at which point it might run out of available trim authority. ------------- Martyn Just Flight Ltd |
bpieke wrote:Posted By: Delta558
Date Posted: 22 Sep 2016 at 11:48am
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On the TB20 question - do you have take-off trim and first stage of flap set? Those are the two which will give you nose-up pitching if incorrectly set. If you have trim set on an axis, make sure you havent disturbed it (i.e. set it back to neutral by a slight adjustment) from the take-off position which is quite far forwards and is set automatically on loading the aircraft. On the TB10 question - see Martyn's response above. Fuel amount shouldn't affect the AP's ability to hold the aircraft as it hardly affects the longitudinal CG position. Paul. |
Posted By: Intrance
Date Posted: 22 Sep 2016 at 2:46pm
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I notice the manual has the normal procedures for Climb as Full Throttle/Full RPM. Most owners and schools I know that use these planes (both TB-10 and -20) will set climb power around 500ft AGL. My former flight school used 25"/2500 RPM for example, with some instructors having a preference for 24/2400 to save a bit of fuel. Since the last update the performance seems fairly accurate. Still a bit overpowered to what my personal experience was in those planes, but I flew flight school planes with perhaps not the newest engines and such. So I suggest to do something like "airborne, gear up, 300ft, flaps up, 500ft, 25/2500" and see what that gives you.
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Posted By: bpieke
Date Posted: 22 Sep 2016 at 10:36pm
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Compared to the V2 flight model, this latest (V3) flight model runs out of down trim authority fairly quickly.. Level cruise flight 22"/2200rpm has the trim indicator pegged full forward. |
Posted By: Intrance
Date Posted: 23 Sep 2016 at 4:59pm
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My previous reply was before checking the TB-20, and as mentioned in the other thread, something must have gone wrong there with the last update. It is way overpowered right now, which is also why you would have trouble with the trim. The TB-10 seems fairly good now though. But I haven't had too much time with it yet, will check it out a bit later. Still satisfied overall. Most of my RL single engine piston hours are on TB9/10/20 aircraft, so this was a must buy anyway
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Posted By: bpieke
Date Posted: 23 Sep 2016 at 5:38pm
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Going back to the previous air file seems to be the way to go, for now.. |