April 1, 200323 yr Are there any tricks to slowing the plane to 170 mph? If I use 15-17" and 2000 rpm it takes a long time to slow down and a lot of ground gets covered before you can start a descent into the airport. One quarter flaps will do it, but I understand flaps should not be applied above 170.Thanks,John Woodward
April 1, 200323 yr My normal method is to close the throttles entirely with carb heat applied and hold the aircraft in a level flight path using pitch. As soon as I hit 170, I deploy one stage flaps and the gear, which is normally enough to hold the speed below 170mph from that point.It might not be the "by the book" method for a B25, but it worked for a rather-steeper-than-intended approach into Kalamazoo last night!Ian P.:-halo
April 3, 200323 yr Hello John,The settings in the performance sheet is for MAINTAINING the given airspeeds, not for reducing your airspeed. This sheet gives you reference setting, and not the flying techniques needed to achieve them. These techniques are learned during flight training. The BT manuals and handbooks has some flying technique information.Ian is correct about reducing power when above the flap- and gear-extension speeds. You reduce power below the settings needed to maintain a desired airspeed until you reach that speed. However, you do not want to pull the power all the way back, as this will "shock cool" the engines and potentially damage them. Do not go below the green power and RPM arcs, except in an emergency, while slowing down. Once the desired airspeed is reached, the "book" settings will maintain that airspeed.If you have planned your flight well, you will partially reduce power some time before you need to be at that speed, for example, before you enter the traffic pattern or final approach. Once you are slow enough to safely extend flaps and gear, they can be lowered to further slow down your aircraft. Howard Sodja
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