Dornier Do X
1929
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Dornier Do X

The Do X was built in Switzerland by Aktiengesellschaft fur Dornier-Flugzeuge at Altenrhein and first flew on 25 July 1929. It was then by far the largest flying-boat in the world and remained so until World War II: on 21 October 1929 it lifted 150 passengers, a crew of 10 and 9 stowaways. But engine troubles caused considerable problems and the original 12 Siemens-built Bristol Jupiter radials were replaced by 12 Curtiss Conquerors.

Its most notable flight was from Friedrichshafen to New York: beginning on 2 November 1930 and ending on 27 August 1931, it flew via Amsterdam, Galshot (England), Lisbon (where fire damaged a wing), Canary Islands (where the hull was damaged), Bolama (Portuguese Guinea), Cape Verde Islands, Fernando Noronha, Natal (Brazil), Rio de Janeiro and the West Indies.

Two sister ships, the Umberto Maddalena and Alessandro Guidoni, were also built for Italy.

Dornier Do X


Specification 
 CREW10
 PASSENGERS72
 ENGINE12 x Curtiss "Conqueror", 440kW
 WEIGHTS
    Take-off weight48000 kg105822 lb
    Empty weight28250 kg62281 lb
 DIMENSIONS
    Wingspan48.0 m158 ft 6 in
    Length40.1 m132 ft 7 in
    Height10.1 m33 ft 2 in
    Wing area450.0 m24843.76 sq ft
 PERFORMANCE
    Max. speed200 km/h124 mph
    Cruise speed175 km/h109 mph
    Ceiling420 m1400 ft
    Range w/max.fuel3600 km2237 miles
    Range w/max.payload1100 km684 miles

Comments
werner, 21.10.2015

When I was 3 years old, my Mom and Dad visited the DOX- D-1929 at North Beach Seaplane base. I still have the photo my Dad took of Mom and me.

Werner, 05.10.2015

Three Do Xs were constructed in total: the original (DO X1 - registered D-1929) operated by Dornier, and two other machines based on orders from Italy – the X2, named Umberto Maddalena (registered I-REDI), and X3, named Alessandro Guidoni (registered I-ABBN). Germany's original Do X was turned over to Deutsche Luft Hansa, the national airline at that time, after the financially strapped Dornier Company could no longer operate it. After a successful 1932 tour of German coastal cities, Luft Hansa planned a Do X flight to Vienna, Budapest, and Istanbul for 1933. The voyage ended after nine days when the flying boat's tail section tore off during a botched, over-steep landing on a reservoir lake near the city of Passau. While the fiasco was successfully covered up, the Do X was out of service for three years, during which time it changed hands several times before reappearing in 1936 in Berlin. ("On 5 September 1933 the DO-X was flown back to the Bodensee (Lake Constance). The Passau fiasco started the DO-X's trip to the museum.") The Do X then became the centerpiece of Germany's new aviation museum Deutsche Luftfahrt-Sammlung at Lehrter Bahnhof.
The Do X remained an exhibit until it was destroyed in an RAF air raid during World War II on the night of 23–24 November 1943. Fragments of the torn-off tail section are on display at the Dornier Museum in Friedrichshafen. While never a commercial success, the Dornier Do X was the largest heavier-than-air aircraft of its time, a pioneer in demonstrating the potential of an international passenger air service. A successor, the Do-XX, was envisioned by Dornier, but never advanced beyond the design study stage.
The Italian variants were essentially identical to the original with the exception of being slightly larger and using a different powerplant and engine mounts.[10] Dornier claimed the X2 was the largest aircraft in the world at that time. Each was powered by Fiat A-22R V12 water-cooled engines, with the six engine mounts being covered by a streamlined fairing. The Do X2 entered service in August 1931, and the X3 followed in May, 1932. Both were initially based at the seaplane station at La Spezia, on the Ligurian Sea, and reassigned to various other bases during their service.After plans for a first-class passenger service (Genoa-Gibraltar) were deemed unfeasible, the X2 and X3 were used for officer training cruises, aeronaval maneuvers, and publicity flights. After scaling back flights and crew complements during 1934, they were mothballed at Marina di Pisa in 1935, and broken up for scrap in 1937.

art, 06.05.2015

Yes I like to build one as a wind yain but need more spec. I use 1in to three ft as a scale

Cecil R Murphy, 05.10.2011

If my memory sewves me correct that aiecraft flew north over Core Sound , the coast of North Carolina on its way from Brazil to New york. I remember hearing the noise long before I saw the aircraft. As we did not get a news paper nor had a radio, I am sure no one in my small comunity of Davisknew any thing about the flight. I do remember it to this day
Cecil R Murphy
103 Cannery
Morehead City NC 28557

RUDI, 12.08.2011

SAW THE REMNANTS IN THE BOMBED MUSEUM FOR AVIATION OR TRANSPORT IN BERLIN NOT FOR FROM THE LEHRTER BAHNHOF UNDER THE COLLAPSED ROOF OF THE MUSEUM IN THE FALL OF 1945 OR SPRING 1946.
I MANAGED TO CLIMB ON THE RIGHT STUB WING , IT WAS A GREAT MOMENT FOR A 14 YEAR OLD APPRENTICE ON AN ERRANT, STUMBLING ACROSS THE DO X ,WHILE ONLY LOOKING FOR A PLACE TO RELIEF HIMSELF

walter becker, 25.07.2011

In 1931,when I was 6 years old, DOX was at North Beach Airport (predessessor of LaGuardia Airport). For a fee, you could go aboard. My father took me on it, and the main memory is of the size and luxury.

, 17.06.2011

cleats

George Tietjen, 30.11.2010

The Do-X regularly woke me up during nap-time after lunch;
she used to fly over our house (Herzberger Strasse Bremen)
regularly; I believe it was then stationed on a lake nearby
(Lake Zwischenahn near Oldenburg) when not on tour.
What noise!

Barry, 24.11.2009

The Italian types used Fiat A22 engines. The plane was not a great success and the Italian military took them over equally without success and they were both probably scrapped in 1935.

UMESH THACKER AHMEDABAD INDIA, 12.06.2009

DORNIER ITSELF IS THE WORLD FAMOUS COMPANY HAS THE BENCHMARK AND MARVEL IN GERMAN ENGINEERING ESP. DURING HITLER'S REGIME.SO ALSO IS THE MESSERSCHMIDT.

Tom, 02.10.2008

Find the “History of Aviation,” website.
http://www.eads.net/1024/en/eads/history/airhist/1920_1929/dornier_dox_1924.html.

CJA, 02.10.2008

I understand 3 were produced, though the only photos I come across are of the call D-1929. Did they all have the same call#? And can anyone lead me in the direction of the actual fates of all three? I think i heard that one was lost in a museum after air raids over Germany in WWII, as for the other two for Italy? Thanks tons

Tom Drennan, 01.10.2008

I can't find the exact elevation of Altenrhein, but I'm fairly sure it is very neatr 1,400 feet probably closer to 1,300' but maybe a bit higher. I wonder howthat got it to fly at that altitude Tom

luiz carlos marangoni, 05.09.2008

Simplesmente, uma jĂ³ia rara!

pat elliott, sr., 30.05.2008

The ceiling of 1,400' must be a misprint; however, it coincides with the 420 meters. Is this correct?

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COMPANY
PROFILE


FACTS AND FIGURES

© The three decks included a lounge, smoking room, bathroom, kitchen and dining room as well as individual sleeping cabins.

© Fuel consumption was 1818 litres per hour. Returning from South America, the Do X had to land on the water and taxi the last 10km to Portugal.

© Fully loaded, the maximum speed was only 160km/h.

© The initial Siemens-built Bristol Jupiter engines proved inadequate, so Curtiss Conquerors were substituted. In all cases the rear-facing engines tended to overheat.



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