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SPAD S.XX

Two-Seat Biplane Fighter Aircraft

SPAD S.XX

Two-Seat Biplane Fighter Aircraft

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



The SPAD S.XX arrived too late to see combat action in World War 1.
National Flag Graphic
ORIGIN: France
YEAR: 1920
STATUS: Retired, Out-of-Service
MANUFACTURER(S): Societe Pour l'Avions et ses Derives (SPAD) - France
PRODUCTION: 100
OPERATORS: Bolivia; France; Paraguay
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the SPAD S.XX model. Common measurements, and their respective conversions, are shown when possible.
CREW: 2
LENGTH: 23.95 feet (7.3 meters)
WIDTH: 31.89 feet (9.72 meters)
HEIGHT: 9.19 feet (2.8 meters)
WEIGHT (EMPTY): 1,918 pounds (870 kilograms)
WEIGHT (MTOW): 2,866 pounds (1,300 kilograms)
ENGINE: 1 x Hispano-Suiza 8Fb inline piston engine developing 300 horsepower.
SPEED (MAX): 135 miles-per-hour (217 kilometers-per-hour; 117 knots)
RANGE: 249 miles (400 kilometers; 216 nautical miles)
CEILING: 26,247 feet (8,000 meters; 4.97 miles)
RATE-OF-CLIMB: 1,100 feet-per-minute (335 meters-per-minute)




ARMAMENT



STANDARD:
2 x 7.7mm Vickers fixed, forward-firing machine guns synchronized to fire through the spinning propeller blades.
1 x 7.7mm Lewis machine gun on trainable mount in rear cockpit.
VARIANTS



Series Model Variants
• S.XX - Base Series Models; 95 completed.
• S.XX bis - Improved S.XX with larger wing surfaces; improved control; 2 examples.
• S.20 bis-1 - Standard racer model
• S.20 bis-2 - Racer with shortened wing appendages.
• S.20 bis-3 - Racer with revised, shortened wings
• S.20 bis-4 - Racer with revised, shortened wings
• S.20 bis-5 - Gordon Bennett racer; revised wings; two examples completed.
• S.20 bis-6 - Racer model with special Hispano-Suiza engine installation.


HISTORY



Detailing the development and operational history of the SPAD S.XX Two-Seat Biplane Fighter Aircraft.  Entry last updated on 6/4/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
During World War 1 (1914-1918), the advantage in the air war over Europe had changed hands several times, driven by a combination of evolving tactics, experienced pilots and advancing technologies of the period. Aircraft could now fly farther, higher and faster than ever before and carried increasingly potent armament. Towards the end of the war, French engineer Andre Herbemont headed another entry in the storied S.P.A.D. ("Societe Pour L'Aviation et ses Derives") fighter line with the introduction of the S.P.A.D. S.XX (S.20) fighter.

First flying on August 7th, 1918, the aircraft was still in development by the time of cessation of hostilities in November. The S.XX was not officially introduced, therefore, until 1920 and this limited production to approximately 100 units due to the world-wide military draw-down. Manufacture of S.P.A.D. S.XX aircraft was handled by Bleriot while the primary operator of the series became the French Air Force. The aircraft series also saw limited, post-war numbers and service under the flags of Bolivia and Paraguay.

The S.XX was born from the preceding single-seat SPAD S.XVII, itself derived from the single-seat S.XIII fighter. The S.XX differed primarily in its two-seat configuration with the pilot and gunner/observer seated inline across two individual, open-air cockpits. The stout fuselage was of a conventional shape, well-contoured and rounded, with the engine compartment at the front and a single rudder fin at the rear (with applicable horizontal tailplanes). The wings were of equal span with parallel and v-shaped struts joining an upper and lower wing assembly. The upper wing assembly was given considerable sweep while the lower wing was of a conventional straight design. The undercarriage was fixed with two landing wheels while a simple skid aided the tail when the aircraft was at rest. The pilot was afforded 2 x fixed, forward-firing .303 Vickers machine guns over the engine cowl as primary armament while the rear gunner managed a single .303 Lewis gun atop a trainable mount.

Dimensionally, the S.XX sported a wingspan of 32 feet with a fuselage length of 24 feet and height of 9 feet. Empty listed weight was 1,900lbs with a gross weight of 2,880lbs. Power was served through a Hispano-Suiza 8Fb inline piston engine developing 300 horsepower and driving a two-bladed wooden propeller. Performance included a maximum speed of 135 miles per hour, a range out to 250 miles, a service ceiling of 26,240 feet and a rate-of-climb of 1,100 feet per minute.

While the French government originally envisioned a staggering production total during peak war months, its order was severely cut short with the Armistice of November 1918. The Armistice interrupted all manner of programs to date and this included the S.XX which had not yet entered quantitative production by war's end. A bulk of the completed aircraft (95) were of the standard S.XX model while only two of the "improved" S.XX bis were seen - these with larger wing surface areas for better control. One of these was then sold off to Japan's Mitsubishi. From there emerged a line of "one-off" racer platforms that began with the S.20 bis-1 and ended with the S.20 bis-6. Several of these airframes claimed speed records during their time aloft. S.XX/S.20 aircraft served during the 1920s before being given up for more modern types heading into the 1930s.




MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 150mph
Lo: 75mph
    This entry's maximum listed speed (135mph).

    Graph average of 112.5 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
PAR
 
  BER
BER
 
  MSK
MSK
 
  TKY
TKY
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the SPAD S.XX's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
100
100

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


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Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Supported Arsenal
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