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The renaissance of the long tail

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Created on August 7, 2016

Reading time 4min

Written by:

Martin Schröder

Photos:

Daniel Reinhard

2

Archiv Daniel Reinhard

1

Daimler AG

6

Archiv Martin Schröder

5

Bonhams

2

Goodwood FoS

2

Archiv Ch. Traber

2

Bruno von Rotz

2

Martin Schröder

2

Archiv ADAC

1

Steve Van Den Hemel

1

Archiv Prototyp

1

Members Meeting

1

Deutsches Museum

1

ISC Archives/Daytona Speedway

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Mathieu Heurtault - Courtesy Gooding & Company

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Foto Heinrich Hoffmann, Archiv Kent Caveny

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Werkfoto Tatra, Archiv Martin Schröder

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Koenig-Fachsenfeld

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Archiv Matrin Schröder

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G.Janthur (,Wiesbaden)

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Julien Hergault

1

Archiv Matin Schröder

1

Archiv Adler Motor Veteranen Club

1

Porsche AG

1

J. Froidevaux, Archiv Foto Reinhard

1

Daniel Reinhard

2

Archiv Daniel Reinhard

1

Daimler AG

6

Archiv Martin Schröder

5

Bonhams

2

Goodwood FoS

2

Archiv Ch. Traber

2

Bruno von Rotz

2

Martin Schröder

2

Archiv ADAC

1

Steve Van Den Hemel

1

Archiv Prototyp

1

Members Meeting

1

Deutsches Museum

1

ISC Archives/Daytona Speedway

1

Mathieu Heurtault - Courtesy Gooding & Company

1

Foto Heinrich Hoffmann, Archiv Kent Caveny

1

Werkfoto Tatra, Archiv Martin Schröder

1

Koenig-Fachsenfeld

1

Archiv Matrin Schröder

1

G.Janthur (,Wiesbaden)

1

Julien Hergault

1

Archiv Matin Schröder

1

Archiv Adler Motor Veteranen Club

1

Porsche AG

1

J. Froidevaux, Archiv Foto Reinhard

1

Mercedes-Benz Aerodynamik Studie (2015) - mit Langheck

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Auto Union Rekordfahrzeug (1937) - damit fuhr Bernd Rosemeyer Rekordgeschwindigkeiten - aufgenommen 2009

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Stromlinie - der Kampf gegen das unsichtbare Element

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C.I.T.A No. 25 (1899) - besser bekannt als "La Jamais Contente", frühes Rekordfahrzeug mit aerodynamischem Aufbau

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Rumpler Tropfen-Auto (1921)

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Rumpler Tropfenwagen (1922) - im Verkehrszentrum des Deutschen Museums

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Rumpler Tropfenwagen (1921) - wird am ASC Jubiläumskorso von 1925 stolz als "Neuer" vorgezeigt

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Bugatti Typ 30 (1920) - Ferdinand Porsche inspiziert den Bugatti mit Langheck

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Persu (1920) - aerodynamisches Langheck

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Kamm-Wagen (1938) - aerodynamische Limousine mit Kamm-Heck

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Schlörwagen (1938) - Seitenansicht

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Schlörwagen (1939) - vom Deutschen Weltraumzentrum Plllbug

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Stromliniensudie (1935) - Seitenansicht der Stromlinienstudie von Koenig-Fachsenfeld

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Stromliniensudie (1935) - Aufsicht der Stromlinienstudie von Koenig-Fachsenfeld

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Zeiner Kleinwagen (1935) - Stromlinien-Automobil

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Sunbeam Manitou (1920) - mit aerodynamischem Langheck - an der Rétromobile Paris 2014

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Sunbeam V12 Bluebird (1920) - mit ausgeprägtem Langheck

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Sunbeam V12 Bluebird (1920) - mit ausgeprägtem Langheck

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Adler Rekordwagen (1936) - Rekordwagen Erwin Kleyers, 1936 in Frankfurt am Main

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Adler Rennlimousine (1937) - aufgenommen an der Automobilausstellung Berlin im Jahr 1937

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Adler Rennlimousine (1937) - wie in South Michigan aufgefunden

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Auto Union Typ A (1935) - mit Stromlinienkarosserie für Rekordfahrten

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Hanomag Diesel Rekordwagen (1939) - mit einem von Paul Jaray gezeichneten Aufbau

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Mercedes-Benz Rekordfahrzeug (1936) - mit aerodynamischer Karosserie

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Mercedes-Benz Weltrecordwagen (1936) - für die Zeit ausserordentlich fortschrittliche Aerodynamik

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Tatra 77 (1934) - mit Heckfinne zur Stabilisierung des Geradeauslaufs und ansteigendem Unterboden im Heckbereich (Diffusor)

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Porsche 906 Langheck (1967) - Langheckversion des Mittelmotorsportwagens mit Rico Steinemann am Steuer

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Porsche Carrera 6 (906) (1966) - Langheck-906 unter sich

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Porsche 908 Langheck (LH) (1969) am der Jarama Classic 2016

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Porsche 908 Langheck neben Porsche 356B (1963) an der Porsche Rennsport Reunion V

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Porsche 907 Langheck (1967) - Le Mans Classic 2014

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24 Stunden von Daytona 1968 – Platz 3 erreichten Jo Schlesser und Joe Buzzetta im Werks Porsche 907 Langheck

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Porsche 907 Langheck (1968) - der Siegerwagen von Daytona - angeboten an der Gooding & Co Versteigerung in Amelia Island am 7. März 2014

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Porsche 908.02 'Flunder' Langheck Group 6 Racing Sports Prototype (1969) - als Lot 23 an der Bonhams Bond Street Versteigerung am 30. November 2014 verkauft

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Porsche 908.02 'Flunder' Langheck Group 6 Racing Sports Prototype (1969) - als Lot 23 an der Bonhams Bond Street Versteigerung am 30. November 2014 verkauft

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Ferrari 512S (1970) - wunderschöne Langheck-Version (Rétromobile 2013)

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Porsche 917 LH 1971 - entwickelt für die hohen Geschwindigkeiten in Le Mans

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McLaren F1 GTR Longtail (1997) - Der Gulf Team Davidoff #40 McLaren F1 GTR Langheck fuhr 1997 in Le Mans (McLaren F1 GTR Jubiläumsgruppe zu Ehren des Siegs in Le Mans vor 20 Jahren)

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Mercedes-Benz Aerodynamik Studie (2015) - mit Langheck

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Mercedes-Benz Aerodynamik Studie (2015) - mit Langheck

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Mercedes-Benz Aerodynamik Studie (2015) - mit Langheck

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Summary

In 2015, Mercedes-Benz presented an aerodynamic study with a boat-tail rear end, citing predecessors that date back almost to the early days of automotive engineering. By means of a brief excursion into the laws of aerodynamics and a historical review, this article shows why Mercedes chose this path and what can be implemented better today than 50 or 100 years ago.

This article contains the following chapters

Technical literature used:

Estimated reading time: 4min

Preview (beginning of the article)

It was Baron Reinhard Koenig-Fachsenfeld and Wunibald Kamm, head of the FKFS (Research Institute for Automotive Engineering and Vehicle Engines Stuttgart), who independently and more or less simultaneously discovered at the beginning of the 1930s that "it is not important to make the body completely pointed at the rear, but rather that it has the smallest possible cross-section at the point where the flow separates, and that gentle tapering is applied up to this point." (Source: Wunibald Kamm "Das Kraftfahrzeug", 1936) The requirements for an aerodynamically optimized rear design, which are somewhat awkwardly formulated for our modern ears, have been implemented in an almost literal sense in the Mercedes-Benz concept study shown at the IAA in 2015. The vehicle body "tapers" towards the rear, i.e. the body becomes narrower and slopes downwards from the center of the body towards the rear. So much so that the roof had to be given two small bulges (double bubble) for the rear passengers.

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