HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Apr 10, 2013, 07:21 AM
Registered User
richard hanson's Avatar
United States, UT, Salt Lake City
Joined Oct 2007
6,984 Posts
Moving right along---- I am outfitting my old Seniorita (3 channel) with a 635 rx -which has an AS3X stabilization system in it
So we will see accelerometer stabilizing and dihedral at work
richard hanson is offline Find More Posts by richard hanson
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 29, 2013, 01:25 PM
Registered User
The Willamette Valley, Oregon
Joined Dec 2008
1,165 Posts
New results

Had similar results in another 1-26 with much less friction in elevator control. Was flying hands-off stick. This aircraft appears to be dynamically unstable in pitch when loaded near the aft end of the allowable envelope. Makes cloud flying much more challenging as you are always fighting the pitch phugoid with one half of your attention, while controlling the bank angle with the other half.

A related point is that the difference in stick position between a steady-state airspeed of say 40 MIAS vs 60 MIAS is very small. Much larger inputs are typically used to effect a rapid increase in airspeed. Also much larger inputs are needed to compensate for the curving relative wind and hold the angle-of-attack constant as the aircraft is rolled into a banked turn.

Steve
aeronaut999 is offline Find More Posts by aeronaut999
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Flight Stabilizers vs. Flybarless controllers? N8LBV Electric Heli Talk 6 Mar 25, 2013 10:03 AM
Discussion Gain vs stability in Hoverflypro - Help Rasec Hoverfly Technologies 2 Jan 18, 2013 04:38 PM
Discussion How does washout reduce spiral instability or promote roll stability? steveseibel Modeling Science 26 Oct 09, 2006 06:36 PM
Discussion Dragonfly pitch instability kallend Micro Helis 19 Jan 25, 2006 05:06 PM
A Dynamically Instable ECO-8 -- help! bacarter Electric Heli Talk 52 Mar 25, 2002 07:29 PM