|Quoting Bobster2 (Reply 8):|
You could probably use less water if it's only for the airplane.
Here's how: Make a pair of V-shaped troughs fitted to the floats. Have a high-speed waterpump and distribution system. This system sprays water into the troughs just ahead of the floats, scavenges it from just behind them and redirects it to the next section just ahead. Repeat until airborne.
Back in the late sixties I watched one of these:
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Photo © Malcolm I H McCrow
conducting ops in Gatun Lake and Manzanillo Bay Panama. When they took off out of Manzanillo Bay from the old Panagra ramp, they angled toward the opening in the rompeolas
, the breakwater at the Caribbean end of the Panama Canal. The reason was takeoff distance. From the back of the bay straight toward the breakwater was (according to GoogleEarth) about 9500' and they were not sure they could clear the 6 - 8 foot high concrete barrier. Angling out toward the opening they had about 16000' The performance was even worse in Gatun Lake because it is fresh water - less buoyancy.
Manzanillo Bay has seen a lot of flying boat ops. I've seen pictures of Consolidated Commodores and Sikorsky S-38 and S-43 flying boats from Panam, Panagra and Uraba-Medellin Airways. There was at least one Commodore at the bottom of the bay. Never did see a picture of a Martin 130 or Boeing 314 there though.
Happiness is not seeing another trite Ste. Maarten photo all week long.