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S.21
Photo: Uncredited · Wikimedia Commons · Public domain
REC // INTEL FEED

S.21

Air Superiority Fighters
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S.21

S.21
S.21 Photo: Uncredited · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Air-to-Air Lethality
30
Agility
50
Speed
45
Radar & Avionics
10
Range
35
Stealth
0
Survivability
40
Reliability
60
Technology
20
Cost-Effectiveness
70
ManufacturerDamen Schelde Naval Shipbuilding
CategoryAir Superiority Fighters
Operators1 countries
Quantity1
Data Quality81%
MASS(Military Archive Scoring System)
33
Air Superiority Fighters MASS Rating
376/832
All-Time
Air Superiority Fighters · 10 axes scored
Air-to-Air Lethality
30
Agility
50
Speed
45
Radar & Avionics
10
Range
35
Stealth
0
Survivability
40
Reliability
60
Technology
20
Cost-Effectiveness
70
ⓘ Regardless of era, the same scoring system applies to all units in the air superiority fighters category.
01 / Overview
S.21
Quantity
1
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
AIR SUPERIORITY FIGHTERS
—
PERFORMANCE/PRICE
75
UNIT COST (2025 USD)
—
33
air superiority fighters category
ⓘ Performance/Price and MASS score are computed across all units in the air superiority fighters category, regardless of era.
02 / Specs & Design
◎General3MOD.3
  • Crew1
  • Primary Rolefighter
  • In ServiceNo
◈Powerplant6MOD.6
▣Performance3MOD.3
  • Top Speed590 km/h
  • Cruise Speed520 km/h
  • Service Ceiling10,000 m
◇Dimensions & Weights6MOD.6
  • Length7.43 m
  • Wingspan9 m
  • Height2.6 m
  • Empty Weight1,700 kg
  • Loaded Weight2,500 kg
  • Max Takeoff Weight2,500 kg
◆Armament6MOD.6
⬢Production3MOD.3
  • Total Built1
  • Operators0
  • Variants0
▲Service History1MOD.1
  • Operational Statusproject abandoned, prototype destroyed
03 / History
04 / Operators
Operator Countries1country
05 / MASS Score
MASS RANKINGSMASS ↗
ⓘ Rankings are within theAir Superiority Fighterscategory.
📖 TERMS ON THIS PAGE1terms
Air-to-air missiles are guided missiles fired from aircraft to engage other aircraft. They are used for self-defense and to gain air superiority.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Air Superiority Fighters entry →