Comment on "Your altimeter displays one altitude while your GPS displays another. Under VFR, which do you use/when?"
...e old Russian and altimeter works in TORRs. Then I didnt to know what pressure is if tower told me QNH 1013. In our country is the transition level 5000-5500ft to the standard&n...Comment on "Efficiency: Perfect pitch UAVs and airboats lead to new propellers (at least some good from UAVs / Drones)"
...ght, so that energy can be converted to thrust instead. With all the compromises of props and pitch for certain speeds, altitudes and climb or level, is the best way to get bette...