Data Quality84%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the utility / transport helicopters category.
01 / Overview
Lockheed XH-51
Category
Country
Production
1962–1964
Quantity
3
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
UTILITY / TRANSPORT HELICOPTERS · EARLY COLD WAR
26
PERFORMANCE/PRICE
25
UNIT COST (2025 USD)
—
ⓘ 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 Flight1962
- Crew1
- Passengers3
- Primary Roleexperimental rigid-rotor research helicopter
- In ServiceYes
◈Powerplant6MOD.6
- Engine TypePratt & Whitney Canada PT6B-9
- Number of Engines1
- Engine Power (each)410 kW
- Rotor Configurationrigid rotor
- Main Rotor Blades4
- Anti-Torque Typetail rotor
▣Performance2MOD.2
- Top Speed280.001 km/h
- Cruise Speed257.472 km/h
◇Dimensions & Weights2MOD.2
- Fuselage Length12.192 m
- Height2.5 m
◆Armament & Mission5MOD.5
- Hardpoints0
- Anti-Tank MissilesNo
- Air-to-Air MissilesNo
- Rocket PodsNo
- Rescue HoistNo
▤Avionics7MOD.7
⬢Survivability6MOD.6
▲Production2MOD.2
- Total Built3
- Variants4
◎Service History3MOD.3
- Production Start1962
- Production End1964
- Operational StatusRetired
03 / History
SERVICE LIFESPANRetired
- 1962Production started
- 1964Production ended
64
years in service
2
years in production
3
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
05 / MASS Score
UTILITY / TRANSPORT HELICOPTERS RANKING Utility / Transport Helicopters · Early Cold War
MASS RANKINGSMASS ↗
176UTILITY / TRANSPORT HELICOPTERS26EARLY COLD WAR · UTILITY / TRANSPORT HELICOPTERS2022UNITED STATES · ALL WEAPONS204PERFORMANCE/PRICE · UTILITY / TRANSPORT HELICOPTERS
ⓘ Rankings are within theUtility / Transport Helicopterscategory.
📚 Sources