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Project Pluto
Photo: Lawrence Livermore Laboratory · Wikimedia Commons · Public domain
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ProjectPluto

Land-Attack Cruise Missiles (LACM) · United States · 1957
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ProjectPluto

Project Pluto
Project Pluto Photo: Lawrence Livermore Laboratory · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Range
85
Accuracy
30
Low-Observability
70
Lethality
90
Terrain-Following Guidance
20
Counter-Measure Resistance
60
Payload Versatility
10
Reliability
5
Technology
95
Strategic Value
80
Origin United States
ManufacturerVought
CategoryLand-Attack Cruise Missiles (LACM)
EraEarly Cold War
In service1957–1964
Operators1 countries
Data Quality84%
56
Land-Attack Cruise Missiles (LACM) MASS Rating
1/10
Early Cold War
37/61
All-Time
Land-Attack Cruise Missiles (LACM) · 10 axes scored
Range
85
Accuracy
30
Low-Observability
70
Lethality
90
Terrain-Following Guidance
20
Counter-Measure Resistance
60
Payload Versatility
10
Reliability
5
Technology
95
Strategic Value
80
ⓘ Regardless of era, the same scoring system applies to all units in the land-attack cruise missiles (lacm) category.
01 / Overview
Project Pluto
Prime contractor
Production
1957–1964
Unit Price (current)
$53.8M↗ 977% inflation · 1961→2025
Original Price
$5.0M (1961)
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
LAND-ATTACK CRUISE MISSILES (LACM) · EARLY COLD WAR
1
PERFORMANCE/PRICE
10
UNIT COST (2025 USD)
$53.8M
Original: $5.0M (1961)
Inflation: +%977
56
land-attack cruise missiles (lacm) category
ⓘ Performance/Price and MASS score are computed across all units in the land-attack cruise missiles (lacm) category, regardless of era.
02 / Specs & Design
◎General3MOD.3
  • Missile TypeSupersonic Low Altitude Missile
  • DesignerTheodore Charles (Ted) Merkle
  • In ServiceNo
▣Propulsion3MOD.3
  • Propulsion Typenuclear ramjet
  • Two-StageNo
  • Fuel / Propellanthighly enriched uranium oxide
◇Performance5MOD.5
  • Top Speed1,022 m/s
  • Top Speed (Mach)3 Mach
  • Cruise Altitude152 m
  • Flight Profilelow altitude supersonic
  • HypersonicNo
◆Warhead4MOD.4
⬢Production3MOD.3
  • Unit Cost5,000,000 USD
  • Operators1
  • Production Start1,957 year
03 / History
SERVICE LIFESPANRetired
  1. 1957Production started
  2. 1964Production ended
69
years in service
7
years in production
0
countries operating
ⓘ 1 countries retired it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE3terms
Launched from a ground-based platform, such as a vehicle or tripod, rather than an aircraft or other airborne system.
Relating to or using nuclear energy, typically fission, for propulsion or power generation in military vessels.
Sea‑skimming is a low‑altitude flight profile in which a missile or projectile flies close to the sea surface to minimize radar detection and increase survivability.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Land-Attack Cruise Missiles (LACM) entry →