Test Flying

A collection of articles relating to phase one test flying of the Bearhawk aircraft.

Vortex Generators

Vortex Generators offer a number of incremental performance improvements with no observable change to cruise speed. Installation A number...

Heavy Wing

When I was test flying my Bearhawk I noticed that in level flight the right aileron was reflexed slightly more than the left. Very long...

Flow Matching Fuel Injectors

These days many pilots operate their engine "Lean of Peak" (LOP). There is plenty information about this on the internet, but essentially...

Engine Cooling

Due largely to the Amateur built/Experimental category of the Bearhawk, there is no one standard for engine cooling. Factors affecting...

Aileron Reflex

The designer recommends reflexing the ailerons approximately 3/8" above the trailing edge to help reduce adverse yaw. This works by...

Weight and Balance Accuracy

This article discusses a method to level the aircraft accurately, so that the arm distances can be compared to other known measurements for

Pitot Static Position Error

What is it ? Position error normally manifests as the ASI (airspeed indicator) reading a very low speed at high angles of attack. It is...

Rigging the Bearhawk

Related links: Heavy Wing There's plenty written about how to build the Bearhawk, but very little about how to rig it well. Rigging it...

Engine Failure Scenarios

I performed a number of glide approaches to simulate an engine failure, starting from downwind abeam the threshold at 1000ft agl. Then...

Phase One - Managing Risks

Risk mitigation The Safety Note on Loss of Directional Control while Landing contains information from the NTSB database indicating a...