Create Power Required Chart for d450 #116

This has been on my list for years. Have not done this since I was flying gentlenav on a powered glider. Key to being able to provide accurate best range and endurance speeds. Can also be used to establish power checks prior to committing to forward flight. Goal will be to fly at three different gross weights under three different density altitudes. So it could take a while to gather all data. But even doing it for one gross weight and DA is more than what most commercial builds will provide.

Would be really nice to see this automated via Maverick under a Functional Check tab or some such. Checklists and templated flight plans to cover testing with automated log analysis.