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X-20Dyna-Soar

Interceptors · United States · 1957
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X-20Dyna-Soar

X-20 Dyna-Soar
X-20 Dyna-Soar Photo: Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Speed
95
Rate of Climb
85
Service Ceiling
98
Radar & Sensors
60
Long-Range Missiles
0
Range
80
Readiness
0
Reliability
0
Technology
90
Cost-Effectiveness
10
Origin United States
ManufacturerBoeing
CategoryInterceptors
In service1957–1963
Operators1 countries
Data Quality84%
MASS(Military Archive Scoring System)
59
Interceptors MASS Rating
44/87
All-Time
Interceptors · 10 axes scored
Speed
95
Rate of Climb
85
Service Ceiling
98
Radar & Sensors
60
Long-Range Missiles
0
Range
80
Readiness
0
Reliability
0
Technology
90
Cost-Effectiveness
10
ⓘ Regardless of era, the same scoring system applies to all units in the interceptors category.
01 / Overview
X-20 Dyna-Soar
Category
Prime contractor
Production
1957–1963
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
INTERCEPTORS
—
PERFORMANCE/PRICE
5
UNIT COST (2025 USD)
—
59
interceptors category
ⓘ Performance/Price and MASS score are computed across all units in the interceptors category, regardless of era.
02 / Specs & Design
◎General4MOD.4
  • First Flight1966
  • Crew1
  • Primary Rolespace interceptor and multi-mission spaceplane
  • In ServiceNo
◈Powerplant2MOD.2
  • Engine TypeAJ10-138
  • Number of Engines2
▣Performance5MOD.5
  • Top Speed28,161 km/h
  • Top Speed (Mach)18 Mach
  • Service Ceiling161,544 m
  • Ferry Range40,744 km
  • Rate of Climb508 m/s
◇Dimensions & Weights6MOD.6
  • Length10.772 m
  • Wingspan6.34 m
  • Height2.591 m
  • Wing Area32.052
  • Empty Weight4,715.172 kg
  • Max Takeoff Weight5,165.143 kg
◆Production1MOD.1
  • Total Built0
▤Service History2MOD.2
  • Retirement Year1968
  • Operational Statuscanceled
03 / History
SERVICE LIFESPANStill in Service
  1. 1957Production started
  2. 1963Production ended
69
years in service
6
years in production
1
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries1country
📚 Sources
📖 ENCYCLOPEDIA Browse the Interceptors entry →