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ฮ.๖ข     H.6B     Bell 412
ฮ.๖ค     H.6C     Bell 412SP
ฮ.๖ง     H.6D     Bell 412EP
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Development

Entwicklung

 

The Bell 412 is a twin-engine utility helicopter of the Huey / Iroquois family manufactured by Bell Helicopter. It is a development of the Bell 212, with the major difference being the composite four-blade main rotor. Development began in the late 1970s with two Bell 212s being converted into 412 prototypes. An advanced four-blade main rotor with a smaller diameter replaced the 212's two-blade rotor. The Bell 412 prototype first flew in August 1979.

 

Die Bell 412 ist ein zweimotoriger Mehrzweck-hubschrauber der Huey / Iroquois-Familie von Bell Helicopter. Es ist eine Weiterentwicklung der Bell 212, wobei der Hauptunterschied der Vierblatt-Hauptrotor ist. Die Entwicklung begann in den späten 1970er Jahren mit zwei Bell 212, die in 412 Prototypen umgewandelt wurden. Ein fortschrittlicher Vierblatt-Hauptrotor mit einem kleineren Durchmesser ersetzte den Zweiblatt-Rotor der 212. Die Bell 412 Prototyp flog erstmals im August 1979.

                  .

Variants

Versionen

 

412

Standard Model with P&WC PT6T-3B engines  

412

Standardmodell mit P & WC PT6T-3B Treibwerken
 

412SP

Special Performance version with P&WC PT6T-3BF engines  

412SP

Version mit Spezieller Leistung mit P & WC PT6T-3BF-Triebwerken
 

412HP

High performance version with P&WC PT6T-3BG or -3D engines

412HP

Hochleistungsversion mit P & WC PT6T-3BG oder -3D Treibwerken
 

412EP

Enhanced performance version with P&WC PT6T-3DF engines

412EP

Version mit Verbesserter Leistung mit P & WC PT6T-3DF-Triebwerken
..

Operational history

Einsatzgeschichte

 

Bell 412
As replacement for the Bell 212 the RTAF acquired in 1982 two Bell 412 for the Royal Flight. Since 1991 the Bell 412 where used only as Search & Rescue helicopter and the task of a Royal Flight helicopter was taken over from the new Bell 412SP. The Bell 412 where camouflaged in two green and brown (SEA Camouflage) and later repainted to the now standard three pattern the gray colour.

 

Bell 412
Als Ersatz für die Bell 212 erwarb die RTAF 1982 zwei Bell 412 für den Royal Flight. Ab 1991 wurde die Bell 412 nur als Such- und Rettungs-hubschrauber eingesetzt und die Aufgabe des Royal Flight Hubschraubers wurde von den neuen Bell 412SP übernommen. Die Bell 412 wurde in zwei grüntönen und braun getarnt (SEA Tarnung) und später nach dem jetzt serienmäßigen Drei-farben-Muster in grau neu lackiert.

 

Bell 412SP & 412HP
The RTAF bought in 1991 2 Bell 412SP model and one Bell 214HP from Canada to use as the Royal Flight. The two 412SP helicopter are in use for the Royal Family and the 412HP (dark gray colour) is in use for the Royal staff (who belongs to the King). 

 

Bell 412SP & 412HP
Die RTAF kauften im Jahr 1991 zwei Bell 412SP-Modelle und eine Bell 214HP aus Kanada die für die Royal Flight verwendet werden. Die beiden 412SP Hubschrauber sind im Einsatz für die königliche Familie und die 412HP (dunkelgrauer Farbe) ist im Einsatz ist für die Begleitung des Königs.

 

Bell 412EP
In 1998 the RTAF acquired four Bell 412EP from the Bell factory in USA. The 412EP, designated as H.6D, are used as utility helicopters for the Royal Flight. In 2003 two more 412EP where procured from Bell in Textron Canada. They are used by the Crown Prince Maha Vajilalongkorn.

 

Bell 412EP
1998 kaufte die RTAF vier Bell 412EP direkt von der Bell Fabrik in de USA. Die 412EP wurden als H.6D bezeichnet und werden als Mehrzweck Hubschrauber für den Royal Flight verwendet. 2003 wurde zwei weitere von Bell Textron in Kanada erworben. Sie wurden lange vom Kronprinzen Maha Vajilalongkorn. verwendet.

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Royal Thai Air Force Bell 412 Royal Thai Air Force Bell 412 Royal Thai Air Force Bell 412
Royal Thai Air Force Bell 412SP Royal Thai Air Force Bell 412SP Royal Thai Air Force Bell 412EP
   
Royal Thai Air Force Bell 412EP    
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Specifications 412EP

Rotor diameter

Rotordurchmesser

14.00 m

Length

Länge

17.10 m

Height

Höhe

4.60 m

Engine

Motor

1 × Pratt & Whitney Canada PT6T-3D or PT6T-3DF Twin-Pac turboshafts, 1,250 shp

Maximum speed

Höchstgeschwindigkeit

259 km/h

Empty weight

Leergewicht

3,079 kg

Loaded weight

Startgewicht

5,397 kg

Climb Rate

Steigrate

6.86 m/s

Service ceiling

Gipfelhöhe

6,096 m

Range

Reichweite

980km

Armament

Bewaffnung

none

Capacity

Zuladung

1 Pilot, 13 passengers

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Pictures

   
  Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem)  
   
  Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem)  
   
  Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem) Bell 412 (Photo from the collection of Tui Pankem)  
   
  Bell 412SP (Photo from the collection of Tui Pankem) Bell 412SP (Photo from the collection of Tui Pankem) Bell 412SP (Photo from the collection of Tui Pankem) Bell 412SP (Photo from the collection of Tui Pankem)  
   
  Bell 412SP (Photo from the collection of Tui Pankem) Bell 412SP (Photo from the collection of Tui Pankem) Bell 412SP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
   
  Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem) Bell 412EP (Photo from the collection of Tui Pankem)  
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Bell 412
Typ Thai Serial s/n Buzz Del Date W/O Date Basis
412 H.6B-1/25 33035 none 1982 present -
412 H.6B-2/25 33039 none 1982 present -
412SP H.6C-1/34 36010 none 1991 present -
412SP H.6C-2/34 36021 none 1991 present -
412HP H.6C-3/34 36025 none 1991 present -
412EP H.6D-1/41  36172 none 1998 present -
412EP H.6D-2/41 36193 none 1998 present -
412EP H.6D-3/41 36194 none 1998 present -
412EP H.6D-4/41 36195 none 1998 present -
412EP H.6D-5/46 36302 none 2003 present -
412EP H.6D-6/46 36303 none 2003 present -
Last Update 1. August 2017
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- Last update 30. December 2012 Written 20. May 2006

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