And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Not a trim tab. That part of the rudder is in front of the pivot point (hinge connecting the fixed vertical stabilizer to the rudder. Having a small area of rudder in front of the hinge counteracts some of the load on the larger area of rudder on the other side of the making it easier for the pilot. Some boats do the same thing on their rudder. A trim tab is found on the trailing edge of the rudder to help reduce pressure for the pilot. Using the rudder area in front of the pivot point causes more drag (makes you go slower and burn more fuel). A trim tab causes less drag and is stronger. Retired CFII
That don't seem right! The craft should be fully balanced to fly straight(altho, a slight-permanent trim tab adjustment for a slight flight anamoly is understandable in any aircraft). A tab as you say would indicate some major fault in the craft........
The error in your thinking is... the craft only flew straight and level.... it does not. Just about everything makes changes in how the craft will fly. Engine power high or engine power idle. Hot or cold temps (ie air density). Winds gusting? Windshear or thermal? Loading- light or max load and especially where the weight is located in the A/C. Pitch (nose up or down) You get the idea. There is no "fully balanced aircraft. Some aircraft are designed to fly stable (transports) and some not (fighters). Helicopters? A whole nuther ball of poop waiting to be scared out of you. All modern aircraft have trim tabs. Even a Boeing. Things cannot be the same every flight. All are NOT "slight permanent". Cessna Piper Beech small craft have manual trim for elevator and rudder. Turbine/jet have powered. Push a button til the force on the yoke is balanced out. Airbus' don't have the same systems. All computer controlled. If the computer senses too much force being required, it will adjust the trim to keep the aircraft straight and level. Trim tabs are both for up and down and side to side. Old CFII
About 800K(plus, depending on engines) a side to re-engine it, plus labor.
You don't wanna know the fuel cost. The CFII is correct. THe part you see is designed to reduce the load on the pilot when the rudder is not centered during turns. The trim tab is designed to reduce the constant forces needed if the plane does not want to fly coordinated.
Nope. If I had the money to burn, I got to go aboard a PBY that was modded into a pretty good RB interior. The owner would fly out to very remote places in the islands and just hang out away from the world. A friend was a pilot for the old Continental Airlines. Ernie would fly a trip, get home and load up his J5 Cub with food and beer and fly down to South Padre Island way out away from anyone. Land on the beach. Pitch a beach umbrella and fish and drink beer and camp a few days. I hate sand so I would rather just anchor out in the PBY and fish.
Upgraded to turbo fan engines. That got turned into a super bird.
ReplyDeleteI don't even want to think about what that might have cost. I will think of what a blast it must be to fly and be able to afford it.
DeleteIs that an old PBY?
ReplyDeleteA Widgeon with turboprops anchored in a really nice spot.
DeleteAgain with the trim tab
ReplyDeleteRudder’s kicked full left, The tab overtravels along with it. That’s how it’s rigged.
DeleteTime to fuel up and head to Bora Bora for the month, CW.
ReplyDeleteNot a trim tab. That part of the rudder is in front of the pivot point (hinge connecting the fixed vertical stabilizer to the rudder. Having a small area of rudder in front of the hinge counteracts some of the load on the larger area of rudder on the other side of the making it easier for the pilot. Some boats do the same thing on their rudder. A trim tab is found on the trailing edge of the rudder to help reduce pressure for the pilot. Using the rudder area in front of the pivot point causes more drag (makes you go slower and burn more fuel). A trim tab causes less drag and is stronger. Retired CFII
ReplyDeleteThat don't seem right! The craft should be fully balanced to fly straight(altho, a slight-permanent trim tab adjustment for a slight flight anamoly is understandable in any aircraft). A tab as you say would indicate some major fault in the craft........
DeleteApologies if this seems smart-assy but this link provides a good explanation of balanced flight control surfaces, trim tabs, etc
Deletehttp://www.pilotfriend.com/training/flight_training/fxd_wing/primary.htm
The error in your thinking is... the craft only flew straight and level.... it does not. Just about everything makes changes in how the craft will fly. Engine power high or engine power idle. Hot or cold temps (ie air density). Winds gusting? Windshear or thermal? Loading- light or max load and especially where the weight is located in the A/C. Pitch (nose up or down) You get the idea. There is no "fully balanced aircraft. Some aircraft are designed to fly stable (transports) and some not (fighters). Helicopters? A whole nuther ball of poop waiting to be scared out of you. All modern aircraft have trim tabs. Even a Boeing. Things cannot be the same every flight. All are NOT "slight permanent". Cessna Piper Beech small craft have manual trim for elevator and rudder. Turbine/jet have powered. Push a button til the force on the yoke is balanced out. Airbus' don't have the same systems. All computer controlled. If the computer senses too much force being required, it will adjust the trim to keep the aircraft straight and level. Trim tabs are both for up and down and side to side. Old CFII
DeleteAbout 800K(plus, depending on engines) a side to re-engine it, plus labor.
ReplyDeleteYou don't wanna know the fuel cost.
The CFII is correct. THe part you see is designed to reduce the load on the pilot when the rudder is not centered during turns. The trim tab is designed to reduce the constant forces needed if the plane does not want to fly coordinated.
I want one bad.
Nope. If I had the money to burn, I got to go aboard a PBY that was modded into a pretty good RB interior. The owner would fly out to very remote places in the islands and just hang out away from the world. A friend was a pilot for the old Continental Airlines. Ernie would fly a trip, get home and load up his J5 Cub with food and beer and fly down to South Padre Island way out away from anyone. Land on the beach. Pitch a beach umbrella and fish and drink beer and camp a few days. I hate sand so I would rather just anchor out in the PBY and fish.
Delete"RV interior"
Delete