: The "DELAG" Passenger Zeppelin "Nordstern", 1919.

A sister ship of the "Bodensee."

The "DELAG" Passenger Zeppelin "Nordstern."

Interior view of the passenger cabin.]

As progress was made in designing, constructing and testing metal
planes, Dornier devoted the work practically toward perfection of
internally braced monoplanes. The monoplane principle was maintained
from the beginning. Today it is recognized generally as the most
desirable type. New designs, methods of handling metal, experiments with
various kinds of construction, newly invented machine tools,
experimental planes and models, each an advance in efficiency,
invariably something newly discovered in the infant science of
aerodynamics--these were the activities of Dornier and his staff in six
years.

The results were Dornier's all-metal planes, possessing from 55 to 2,400
horsepower. They had just started quantity production of big planes and
flying boats in the factories at Lindau and Seemoos when the German
revolution halted all activities. Since then, though hampered by the
treaty stipulations, the company has developed a series of commercial
types unexcelled in construction, performance and safe operation. Since
the war both commercial land planes and flying boats powered with from
one to three engines have been produced.

Twenty-one Dornier Designs

During the war their products included pursuit planes, single motor
two-place fighters (Plate 23), two and three motored bombing planes and
four and multi-engined giant planes--all for over land flying. Seaplane
types included single engine two-place fighters, two and three motored
flying boats and four and multi-engine giant flying boats. More than one
hundred domestic patents were held and more than 250 filed in foreign
patent offices. Twenty-one different designs for experimental types had
been produced, seventeen of them worked out in as many machines which
were flown, and four Plates 24-25-26-27 made into models Plates
24-25-26-27. The following is a list of the experimental personnel year
by year:

1915 1916 1917 1918 1919 1920
Engineers 15 25 25 69 52 23
Workmen 30 250 300 547 207 80

[PLATE 40: The "DELAG" Passenger Zeppelin "Bodensee." Landing
at Friedrichshafen September 1919.

The "DELAG" Passenger Zeppelin "Bodensee." Floating in the
large shed at Friedrichshafen.]

Zeppe