naca-tn-321
- Version
- 267 Downloads
- 525.03 KB File Size
- 1 File Count
- April 23, 2016 Create Date
- April 23, 2016 Last Updated
National Advisory Committee for Aeronautics, Technical Notes - The Impact on Seaplane Floats During Landing
In order to make a stress analysis of seaplane floats, and
especially of the members connecting the floats with the fuse—V _
lage, it is of great importance to determine the maximum pres—
sure acting on the floats during landing. A series of experi—
ments have been carried out, both for model and full—scale
fleets. Results of model and full—scale experiments can be
found in the'English Reports and Memoranda Nos. 583, 683 and
986 (Reference 1). In Germany, investigations have been made
with full—size floats, mounted on a large impact pendulum.
Recently in America the actual maximum pressures occurring dur—
ing landing were obtained by means of a series of indicatcrs
located in the bottom of the float, each of which was set at a
different maximum pressure.reading (Reference 8). When I first
learned of these investigations during my last visit to America,
I tried to develop theoretically a formula for the maximum
pressures during landing so that experimental results might be
applied to different bodies and different velocities. I found
that the formula checked very,well with the experimental re—
sults, and present herewith the development of the formula.
The problem may be treated approximately in the following
manner. We consider a horizontal cylindrical body with a wedge—
shaped under surface as it strikes a horizontal surface of water,
and calculate the force acting between the body and the water.
| File | Action |
|---|---|
| naca-tn-321 The Impact on Seaplane Floats During Landing.pdf | Download |
Comment On This Post