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Bell H-12
Photo: U.S. Air force · Wikimedia Commons · Public domain Use of this image does not imply endorsement by the U.S. Department of Defense (DoD).
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BellH-12

Utility / Transport Helicopters · United States · 1946
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BellH-12

Bell H-12
Bell H-12 Photo: U.S. Air force · Wikimedia Commons · Public domain Use of this image does not imply endorsement by the U.S. Department of Defense (DoD).
MASS (Military Archive Scoring System) 31
* Absolute score — assessed within category · no era adjustment
Payload / Capacity
30
Range
25
Versatility
40
Reliability
50
Speed
20
Survivability
15
Hot-and-High Performance
10
Maintainability
45
Technology
5
Cost-Effectiveness
60
Methodology ↗ → Utility / Transport Helicopters ranking
Origin United States
ManufacturerBell Aircraft Corporation
CategoryUtility / Transport Helicopters
EraEarly Cold War
In service1946–1947
Operators1 countries
Quantity13
⬇ Overview
⚙ Specs
⊕ History
⊕ Operators
⚖ MASS Score
📚 Sources
Data Quality84%
MASS(Military Archive Scoring System)
⊟ Utility / Transport Helicoptersranking ↗methodology ↗
31
Utility / Transport Helicopters MASS Rating
38/42
Early Cold War
198/208
All-Time
Utility / Transport Helicopters · 10 axes scored
Payload / Capacity
30
Range
25
Versatility
40
Reliability
50
Speed
20
Survivability
15
Hot-and-High Performance
10
Maintainability
45
Technology
5
Cost-Effectiveness
60
ⓘ Regardless of era, the same scoring system applies to all units in the utility / transport helicopters category.
01 / Overview
Bell H-12
Category
Utility / Transport Helicopters
Country
United States
Prime contractor
Bell Aircraft Corporation
Production
1946–1947
Quantity
13
Operators
1 countries
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
UTILITY / TRANSPORT HELICOPTERS · EARLY COLD WAR
38
PERFORMANCE/PRICE
70
UNIT COST (2025 USD)
—
MASS SCORE ↗
31
utility / transport helicopters category
ⓘ Performance/Price and MASS score are computed across all units in the utility / transport helicopters category, regardless of era.
02 / Specs & Design
◎General5MOD.5
  • First Flight1946
  • Crew1
  • Passengers9
  • Primary RoleMilitary utility helicopter
  • In ServiceNo
◈Powerplant6MOD.6
  • Engine TypePratt & Whitney R-1340-55 Wasp
  • Number of Engines1
  • Engine Power (each)447 kW
  • Rotor ConfigurationSingle main rotor
  • Main Rotor Diameter14.48 m
  • Anti-Torque TypeTail rotor
▣Performance5MOD.5
  • Top Speed168.966 km/h
  • Cruise Speed144.828 km/h
  • Service Ceiling3,901.44 m
  • Hover Ceiling (IGE)1,326 m
  • Range483 km
◇Dimensions & Weights4MOD.4
  • Fuselage Length17.069 m
  • Height3.353 m
  • Rotor Disc Area164.6
  • Max Takeoff Weight2,851.33 kg
◆Armament & Mission5MOD.5
▤Avionics7MOD.7
⬢Survivability6MOD.6
▲Production2MOD.2
  • Total Built13
  • Variants10
◎Service History4MOD.4
  • Retirement Year1947
  • Production Start1946
  • Production End1947
  • Operational StatusPre-production
03 / History
SERVICE LIFESPANStill in Service
  1. 1946Production started
  2. 1947Production ended
80
years in service
1
years in production
13
units produced
1
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries1country
United StatesACTIVE
Utility / Transport Helicopters Early Cold War United States Bell Aircraft Corporation
📚 Sources
📖 ENCYCLOPEDIA Browse the Utility / Transport Helicopters entry →