PA.I.I.S5
SkillExplain how float and hull construction can affect seaplane performance.
From the FAA library
- SEAPLANE REGULATIONS
separate written test is required for pilots who are adding seaplane to an existing pilot certificate. Adding a seaplane rating does not modify the overall limitations and privileges of the pilot certificate. For example, private pilots with a seaplane rating ... authorized to engage in seaplane operations that would require a commercial certificate. Likewise, a pilot with a single-engine seaplane class rating may not fly multiengine seaplanes without further training. However, no regulatory distinction is made between flying boats…
- SEAPLANE CHARACTERISTICS
Many floats also have spray rails along the inboard forward portions of the chines. Since water spray is surprisingly destructive to propellers, especially at high r.p.m., these metal flanges are designed to reduce the amount of spray hitting the propeller ... Floats are rated according to the amount of weight they can support, which is based on the weight of the actual volume of fresh water they displace. Fresh water is the standard because sea water is about 3 percent denser…
- PERFORMANCE CONSIDERATIONS FOR TAKEOFF, CLIMB, CRUISE, AND LANDING › TAKEOFF
with the landplane, the seaplane must also accelerate to a higher airspeed to generate more lift, but the seaplane must overcome significantly more water drag force as speed increases. This extra drag reduces the rate of acceleration and results ... longer takeoff run. Naturally, the location of the additional weight within the seaplane affects center of gravity (CG) location. Because of the way the floats respond to weight, the CG location affects the seaplane’s handling characteristics on the water…
- SEAPLANE, SKIPLANE, and FLOAT/SKI EQUIPPED HELICOPTER OPERATIONS HANDBOOK
condition of the surface resulting from both wind waves and swells. PLANING POSITION—The attitude of the seaplane when the entire weight of the aircraft is supported by hydrodynamic and aerodynamic lift, as it is during high-speed taxi ... step.” RATIO—The ratio between the height of a swell to the length between two successive crests (swell length). SEAPLANE — An airplane designed to operate from water. Seaplanes are further divided into flying boats and floatplanes. PLOWING POSITION—A nose…
- CHARACTERISTICS OF WATER
CHARACTERISTICS OF WATER A competent seaplane pilot is knowledgeable in the characteristics of water and how they affect the seaplane. As a fluid, water seeks its own level, and forms a flat, glassy surface if undisturbed. Winds, currents, or objects ... surface characteristics. Just as airplanes encounter resistance in the form of drag as they move through the air, seaplane hulls and floats respond to drag forces as they move through water. Drag varies proportionately to the square of speed…