Sounds to me like longitudinal stability being marginal which allows tucking in due to speed build up in the dive. Much depends on component stiffnesses; the stiffer the model the less the stability required for quick enough recovery.
Bob
On Dec 23 2012, mkirda_at_sbcglobal.net wrote:
Might some 003 boron on the top/bottom of at least a couple of prop ribs help here? Or is the prop spar actually rotating under the force?
Just curious...
Regards.
Mike Kirda
--- In Indoor_Construction_at_yahoogroups.com, "joshuawfinn" wrote:
> but more of a model's tendency to let its blades tuck to a reversed condition, creating in effect a big air brake which prevents the model from recovering from mild turbulence. At our last contest, Hope's model still had a little climb left when it bumped a wall, pitched to about 10 degrees nose down, and held that straight to the floor as the blades tucked backwards and spun at about 120 rpm, preventing the model from pitching back into climb attitude. This from a model that in higher torque settings had made repeated recoveries off a basketball net during the same flight.
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET