| Category | Formula One | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Ligier | ||||||||
| Designers | Michel Beaujon (Technical Director) Claude Galopin (Chief Designer) Henri Durand (Head of Aerodynamics) | ||||||||
| Predecessor | JS19 | ||||||||
| Successor | JS23 | ||||||||
| Technical specifications[1] | |||||||||
| Chassis | Aluminiummonocoque | ||||||||
| Axle track | Front: 1,625 mm (64.0 in) Rear: 1,515 mm (59.6 in) | ||||||||
| Wheelbase | 2,800 mm (110 in) | ||||||||
| Engine | FordCosworth DFV 3.0, 2,993 cc (182.6 cu in), 90°V8,NA,mid-engine,longitudinally mounted | ||||||||
| Transmission | Hewland FGB, 5-speedmanual | ||||||||
| Weight | 540 kg (1,190 lb) | ||||||||
| Fuel | Elf | ||||||||
| Tyres | Michelin | ||||||||
| Competition history | |||||||||
| Notable entrants | LigierGitanes | ||||||||
| Notable drivers |  Jean-Pierre Jarier Raul Boesel | ||||||||
| Debut | 1983 Brazilian Grand Prix | ||||||||
| Last event | 1983 South African Grand Prix | ||||||||
| |||||||||
| Constructors' Championships | 0 | ||||||||
| Drivers' Championships | 0 | ||||||||
TheLigier JS21 was aFormula Oneracing car manufactured and raced byLigier during the1983 Formula One season. Powered by a Cosworth V8 engine while the majority of teams used turbo power, the team failed to score any points.
The JS21 was designed byClaude Galopin under the technical direction of Michel Beaujon. Henri Durand worked on the car's aerodynamics.[1] Having usedTalbot engines for the previous two seasons, the JS21 was designed to be powered by a FordCosworth DFV.[2] Ligier was the first choice to be the recipient of the then-new Honda turbo engine due to team owner Guy Ligier's longstanding relationship with Honda but the team declined to use it.[3] The first three JS21 chassis were converted from the previous year's JS19, with four in total being built.[2]
The Ligier team recruited two new drivers for the 1983 season,Jean-Pierre Jarier, who had a single outing for the team back in 1977, and Brazilian noviceRaul Boesel. Jarier qualified for every race with a best grid placing of 9th, at theMonaco Grand Prix. His best finish was 7th inAustria. For most of the season, Boesel usually qualified several places behind Jarier but improved towards the season's end although he did miss qualifying for the Austrian andItalian races. His best qualifying was 17th, in the season openingBrazilian Grand Prix, and he achieved his best finish of 7th the following race in the United States.[1]
1983 was the first season in the team's history that it failed to score a single point. For the following year, team ownerGuy Ligier secured the use of Renault V6 turbocharged engines.[2]
(key) (Results inbold indicate pole position; results initalics indicate fastest lap)
| Year | Team | Engine | Tyres | Drivers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Points | WCC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1983 | Equipe Ligier Gitanes | FordCosworth DFV 3.0V8 | M | BRA | USW | FRA | SMR | MON | BEL | DET | CAN | GBR | GER | AUT | NED | ITA | EUR | RSA | 0 | NC | |
| Jean-Pierre Jarier | Ret | Ret | 9 | Ret | Ret | Ret | Ret | Ret | 10 | 8 | 7 | Ret | 9 | Ret | 10 | ||||||
| Raul Boesel | Ret | 7 | Ret | 9 | Ret | 13 | 10 | Ret | Ret | Ret | DNQ | 10 | DNQ | 15 | NC |
