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Y1B-17 Flying Fortress
Photo: Michael Barera · Wikimedia Commons · CC BY-SA 4.0
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Y1B-17FlyingFortress

Strategic Bombers · United States · 1936
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Y1B-17FlyingFortress

Y1B-17 Flying Fortress
Y1B-17 Flying Fortress Photo: Michael Barera · Wikimedia Commons · CC BY-SA 4.0
* Absolute score — assessed within category · no era adjustment
Payload
85
Range
80
Penetration / Survivability
70
Nuclear Capability
60
Stand-Off Capability
50
Avionics
40
Stealth
0
Reliability
75
Strategic Impact
90
Cost-Effectiveness
65
Origin United States
CategoryStrategic Bombers
EraInterwar Period
In service1936–1937
Operators7 countries
Quantity13
Data Quality88%
MASS(Military Archive Scoring System)
66
Strategic Bombers MASS Rating
2/25
Interwar Period
41/163
All-Time
Strategic Bombers · 10 axes scored
Payload
85
Range
80
Penetration / Survivability
70
Nuclear Capability
60
Stand-Off Capability
50
Avionics
40
Stealth
0
Reliability
75
Strategic Impact
90
Cost-Effectiveness
65
ⓘ Regardless of era, the same scoring system applies to all units in the strategic bombers category.
01 / Overview
Y1B-17 Flying Fortress
Production
1936–1937
Quantity
13
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
STRATEGIC BOMBERS · INTERWAR PERIOD
2
PERFORMANCE/PRICE
70
UNIT COST (2025 USD)
—
66
strategic bombers category
ⓘ Performance/Price and MASS score are computed across all units in the strategic bombers category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • First Flight1936
  • Service Entry Year1938
  • Crew6
  • Primary Roleheavy bomber
  • Generation3rd
  • In ServiceNo
◈Powerplant3MOD.3
  • Engine Typeradial engine
  • Engine ModelWright R-1820 Cyclone
  • Number of Engines4
▣Performance4MOD.4
  • Top Speed380 km/h
  • Service Ceiling10,850 m
  • Ferry Range3,218 km
  • Combat Radius1,850 km
◇Dimensions & Weights7MOD.7
  • Length22.66 m
  • Wingspan31.62 m
  • Height5.82 m
  • Wing Area131.92
  • Empty Weight16.396 kg
  • Loaded Weight24.545 kg
  • Max Takeoff Weight29.71 kg
◆Armament4MOD.4
  • Hardpoints0
  • Weapons Payload2.177 kg
  • Internal Gunfive .30 caliber (7.62 mm) machine guns
  • Nuclear CapableNo
▤Production1MOD.1
  • Total Built13
⬢Service History2MOD.2
  • Retirement Year1945
  • Operational StatusRetired; small number in service as warbirds
03 / History
SERVICE LIFESPANStill in Service
  1. 1936Production started
  2. 1937Production ended
  3. 1939First deployment: World War II
90
years in service
1
years in production
13
units produced
1
countries operating
ⓘ The producing country still actively operates it. 6 countries retired it.
04 / Operators
Operator Inventory1country · 13units
13active
📚 Sources
📖 ENCYCLOPEDIA Browse the Strategic Bombers entry →