Hiller UH-12 / H-23/OH-23 Raven

Light Observation Helicopter

Hiller H 23 C © Karsten Palt
Photo ©: Karsten Palt
The Hiller UH-12 is a single-engine three-seat light utility helicopter produced by the US-American manufacturer Hiller Helicopters Inc. initially designated Hiller 360. The UH-12 in service with the US-Army was designated H-23 Raven, redesignated OH-23 Raven (Observation Helicopter) in 1962. Later civil variants were named the Hiller 12.
The UH-12 was produced in several different variant with two, three or four seats.
Crew1-2
Passengers1-3
Propulsion1 Piston Engine
Engine ModelLycoming VO-540-1B
Engine Power235 kW315 hp
Speed154 km/h83 kts
  96 mph
Service Ceiling4.023 m13.200 ft
Range330 km178 NM
205 mi.
Empty Weight807 kg1.779 lbs
max. Takeoff Weight1.270 kg2.800 lbs
Rotor Blades (main/tail)2/22/2
Main Rotor Diameter10,80 m35,4 ft
Tail Rotor Diameter1,68 m5,5 ft
Wing Area91,6 m²986 ft²
Length8,53 m28,0 ft
Height2,98 m9,8 ft
First Flight1948
Production Statusout of production
Production Range1949-1965
Total Productionca. 2000
VariantsH-23A (UH-12A), H-23B / OH-23B, H-23C / OH-23C (UH-12C), H-23D / OH-23D (UH-12D), UH-12E, UH-12E3, H-23F / OH-23F (UH-12E-4), H-23G, HTE-1 (UH-12B), HTE-2 (H-23B), Hiller HT Mk 1 (

[Photo-ID: 10818] © Karsten Palt 2015-04-04
Hiller 360 UH-12B, , F-BNGM, c/n 699,© Karsten Palt, 2015Hiller
360 UH-12B
Reg.: F-BNGM
c/n: 699
 
Musee de l Air et de l Espace [Paris Le Bourget]
[Photo-ID: 6486] © Karsten Palt 2013-02-09
Hiller 360 UH-12B, Royal Thai Air Force (RTAF), 4, c/n 597,© Karsten Palt, 2013Hiller
360 UH-12B
Royal Thai Air Force (RTAF)
Reg.: 4
c/n: 597
 
Royal Thai Air Force Museum [Bangkok]
[Photo-ID: 1954] © Karsten Palt 2009-04-04
Hiller 360 UH-12B, Swiss Air Force / Schweizer Luftwaffe, KAB-202, c/n 607,© Karsten Palt, 2009Hiller
360 UH-12B
Swiss Air Force / Schweizer Luftwaffe
Reg.: KAB-202
c/n: 607
 
fake reg., ex D-HAHE
Flieger Flab Museum [Dübendorf (LSMD)]
[Photo-ID: 7759] © Karsten Palt 2013-09-01
Hiller H 23 C, US Army, 55-4109, c/n 814,© Karsten Palt, 2013Hiller
H 23 C
US Army
Reg.: 55-4109
c/n: 814
 
Hubschraubermuseum Bueckeburg [Bueckeburg]
[Photo-ID: 7760] © Karsten Palt 2013-09-01
Hiller H 23 C, US Army, 55-4109, c/n 814,© Karsten Palt, 2013Hiller
H 23 C
US Army
Reg.: 55-4109
c/n: 814
 
Hubschraubermuseum Bueckeburg [Bueckeburg]
[Photo-ID: 5592] © Karsten Palt 2012-04-29
Hiller OH-23G Raven, Republic of Korea Army, 15-205, c/n 1714,© Karsten Palt, 2012Hiller
OH-23G Raven
Republic of Korea Army
Reg.: 15-205
c/n: 1714
 
The War Memorial of Korea [Seoul]
[Photo-ID: 1080] © Karsten Palt 2008-07-11
Hiller UH-12C, Bristow Helicopters, G-ASTP, c/n 1045,© Karsten Palt, 2008Hiller
UH-12C
Bristow Helicopters
Reg.: G-ASTP
c/n: 1045
 
The Helicopter Museum [Weston-super-Mare]
[Photo-ID: 2493] © Karsten Palt 2009-06-25
Hiller UH-12C / OH-23C, Royal Netherlands AF / Koninklijke Luchtmacht, O-36, c/n 937,© Karsten Palt, 2009Hiller
UH-12C / OH-23C
Royal Netherlands AF / Koninklijke Luchtmacht
Reg.: O-36
c/n: 937
 
Militaire Luchtvaart Museum [Soesterberg]