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Albert
Bumstead showing Byrd how to use
the sun compass, ca. 1925,
Richard E.
Byrd Papers, #7710_5.
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Bumstead Sun Compass, ca. 1920s,
designed by Albert Bumstead of the
National Geographic Society,
Richard E. Byrd Papers, Box 449.
The sun
compass was an essential navigation
tool, and designed specifically for
Byrd.
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Dead Reckoning for Polar Flight, 1929,
Richard E. Byrd Papers, #5346.
Dead reckoning is the navigational
process of estimating your position by advancing a known position using
course, speed, time and distance to be traveled. In other words, figuring
out where you will be at a certain time if you hold the speed, time and
course you plan to travel (Source: www.dirauxannex.org/Nav1.html).
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Byrd in
the library of Little America,
prior to the South Pole flight, with a
stone
from Floyd Bennett’s grave, 1929.
Richard E.
Byrd Papers, #7778_1.
Byrd dropped the stone, wrapped in the small
American flag, from the plane when they were
over the South Pole, in honor
of his pilot of
the North Pole expedition of 1926. |
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Chart, Consumption Cruising Speed, 1929,
Richard E.
Byrd Papers, #5346.
The weight of the plane and all supplies on board was
of concern. Byrd and the flight crew knew that the performance of the
plane was directly related to its weight. Even with this careful
planning, part of the load still had to be thrown overboard in order to
get the plane above the mountains.
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"If we
can’t we will have to dump some load," handwritten note from the South
Pole Flight, November 29, 1929,
Richard E.
Byrd Papers, #5346.
The weight of the airplane was of serious concern
as they approached the mountains. In fact, they did have to “dump some
load,” and sent bags of food overboard to lighten the airplane.
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“Must
Soon Turn North,” handwritten note from the South Pole Flight, November
29, 1929,
Richard E.
Byrd Papers, #5346.
The noise in the plane was so loud,
the men
communicated with notes.
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Engine Log for Polar Flight,
by Bernt Balchen, 1929,
Richard E. Byrd Papers, #5346.
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South Pole Flight Log, November 29, 1929,
Richard E. Byrd Papers, #5346.
The entry for 1400 hours indicates that
they have reached “the vicinity of the South Pole.”
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Chart of Route Flown by Rear Admiral
Richard Evelyn Byrd from Little
America to
the South Pole, on Nov. 28-29, 1929,
Richard E. Byrd Papers,
#5344.
This chart is from the report presented by
Byrd to the National
Geographic Society.
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Over the
“hump,” the South Polar plane over
the head of the pass of Liv’s Glacier
on the way to the Pole, 1929,
Richard E.
Byrd Papers, #7753_3.
Altitude about 10,500 feet.
The top of
Mount Nansen, at left, is 15,000 feet high.
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The crevasses at Latitude 82 degrees
12’ south,
1929.
Richard E. Byrd Papers, #7753_4.
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Pressure ridge on Bay of Whales
near
Little America, 1929.
Richard E. Byrd Papers, #7754_6.
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Pressure ridges, with
Little America
in the background, 1929.
Richard E. Byrd Papers,
#7754_10.
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