SENSENICH, in their
time was America’s largest
manufacturer of light aircraft propellers. For decades
Sensenich engineers and craftsmen have been designing
and building wooden
propellers for America’s personal
planes. That’s why you would have found the famous
Sensenich winged trademark more often than any other
on new aircraft (under 250 HP) rolling off the line,
on the ground or in the air – any time, any where.
A Sensenich propeller is your guarantee of top performances
from any engine, any aircraft, boat or sled.
All Sensenich fixed
pitch wood type propellers are
constructed of aircraft birch or maple laminations
by moisture proof phenolic resin glue with the glue lines
running parallel to the chord line. The leading edges
are protected against abrasion by metal leading edge
strips and cap tips, fastened to the propeller by steel
screws and copper rivets. Approximately 12 inches of
each blade tip is also further reinforced and protected
by a sturdy fabric or plastic covering glued to the wood.
wood is protected against moisture by the application
of two dip coats of a varnish type wood sealer and two
spray coats of a special spar type propeller varnish.
The Sensenich SKYBLADE – a two-position or constant
controlled propeller – is designed
for installation and operation on aircraft engines incorporating
the flange type crankshaft. The engine must be provided
with an oil passage that connects the engine lubricating
oil pressure source with the front end of the hollow
propeller shaft. A valve, controllable from the airplane’s
cabin, must be supplied for the purpose of metering oil
from the engine lubricating pressure source to the propeller.
The advantages or increase in performance obtained through
the use of a two-position propeller as compared with
a fixed pitch propeller may vary according to the flight
characteristics of the aircraft. General advantages are:
a. Faster acceleration giving shorter take-off run.
b. Greater rate of climb and angle of climb at a lower
c. Increase in cruising speed will vary in airplanes
of the same make and model depending upon the power used
by the pilot.
d. There is a noticeable increase in cruising speed at
low altitudes –but the percent of increase is usually
doubled or tripled at altitudes over 5000 feet.
e. More efficient cruise operation may usually be obtained
by adjusting the high pitch, setting of the controllable
propeller to yield a relatively low value of r.p.m. at
a high throttle setting. This results in more economical
engine operation and increased propeller efficiency.
SKYBLADE APPROVED RATINGS
“Skyblade” propeller was approved by the
Civil Aeronautics Authority with the following ratings:
Model C-2FB, C-2FM & CS-2FM. TC No. P-841. Rated:
Maximum except take-off 112 hp at 2665 RPM. Take-off
rating 115 HP at 2875 RPM.
Model C-3FR (illustrated), CS-3FM & CS-3FR. Rated:
Maximum except take-off 165 HP at 2800 RPM. Take-off
rating 165 HP at 2800 RPM.
Model CS-2FM. Cockpit controlled
selective RPM propeller. Rated: Maximum except take-off
112 HP at 2665 RPM. Take-off
rating 115 HP at 2875 RPM.
That is why you can swing a
SENSENICH and be sure – whether
it is standard equipment on your new ship, or a replacement
prop on your old. Available for aircraft under 250 h.p.
propellers are standard equipment on such famous planes
as Aeronca, All American, Bellanca, Call,
Cessna, Commonwealth, Consolidated, Culver, Engineering
and Research, Fairchild, Funk, Grumman, Luscombe, Piper