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.
Monday, March 3, 2025
US Navy beaching crew pulling a Martin PBM-3S Mariner of patrol squadron VP-206 out out the water, 1944-1945.
Good question. Searching the inter-webs it doesn’t appear that the mariner got reversible propellers until the PBM-5 after the war, so they’re not using the them to help push it up onto the ramp.
Also, that model did not have landing gear/wheels, it was water only, and I don’t see any cradle for an aircraft if you do drag it up on the ramp. I wonder if this is really an engine run up test with the plane tethered to sure to keep it from wandering off during the test.
Just a guess bit it's probably easier to control winching with just a little tension on the line. I know that sometimes when they winch a helicopter down to a tuna boat in heavy seas they'll connect to the winch line on the boat and have the helicopter pull a little collective against it. This puts tension on the line and gets the motion of the copter and boat in synch then they just winch it down.
WRT to Mikey's comment . . . an engineer I worked with was in charge of designing a "constant tension winch", for amphibious assault ships with well decks. (The ships can flood ballast tanks in order to settle lower in the water. They then drop the stern ramp and the well deck floods so that watercraft and amphibious tractors can depart or board the ship. The sea is rarely calm, and any boat or ship will roll and/or pitch to some extent. The line from the constant-tension winch would be attached to the nearest end of the small craft and would tug on the boat (or tractor) at the same time that vehicle was reversing. This would keep the small craft from surfing on a swell and crashing into the forward wall of the well deck.
Most likely, the engines are being run up by the maintenance crew to check for leaks, proper operation of all engine & prop controls or most importantly that they're producing take-off power. Al_in_Ottawa
Wheels are bolt on but probably not used while dumping water on fires in British Columbia. I have never seen one paint white. Always something new to see I suppose. Last flying one is headed to the Pima Museum next to the "Bone Yard". It will be completely disassembled for restoration. Doubt I will be seeing one in my lifetime and I regret that.
Why re the engines running?
ReplyDeleteTo maintain directional control.
DeleteGood question. Searching the inter-webs it doesn’t appear that the mariner got reversible propellers until the PBM-5 after the war, so they’re not using the them to help push it up onto the ramp.
DeleteAlso, that model did not have landing gear/wheels, it was water only, and I don’t see any cradle for an aircraft if you do drag it up on the ramp. I wonder if this is really an engine run up test with the plane tethered to sure to keep it from wandering off during the test.
Just a guess bit it's probably easier to control winching with just a little tension on the line. I know that sometimes when they winch a helicopter down to a tuna boat in heavy seas they'll connect to the winch line on the boat and have the helicopter pull a little collective against it. This puts tension on the line and gets the motion of the copter and boat in synch then they just winch it down.
DeleteWRT to Mikey's comment . . . an engineer I worked with was in charge of designing a "constant tension winch", for amphibious assault ships with well decks. (The ships can flood ballast tanks in order to settle lower in the water. They then drop the stern ramp and the well deck floods so that watercraft and amphibious tractors can depart or board the ship. The sea is rarely calm, and any boat or ship will roll and/or pitch to some extent. The line from the constant-tension winch would be attached to the nearest end of the small craft and would tug on the boat (or tractor) at the same time that vehicle was reversing. This would keep the small craft from surfing on a swell and crashing into the forward wall of the well deck.
DeleteMost likely, the engines are being run up by the maintenance crew to check for leaks, proper operation of all engine & prop controls or most importantly that they're producing take-off power.
ReplyDeleteAl_in_Ottawa
Wheels are bolt on but probably not used while dumping water on fires in British Columbia. I have never seen one paint white. Always something new to see I suppose. Last flying one is headed to the Pima Museum next to the "Bone Yard". It will be completely disassembled for restoration. Doubt I will be seeing one in my lifetime and I regret that.
ReplyDeleteIn white?
ReplyDeleteBallsy, or just a stateside squadron?