Hispano-Suiza piston aero-engines were predominantly piston engines produced by Hispano-Suiza in France, Spain, and under licence in the United Kingdom, the United States and Russia from the First World War through to the 1950s. Development of these engines started with the very successful V-8 engines which introduced many new features which ensured the success of the Hispano-Suiza line.

Designations

Letter system The Service technique de l'aéronautique (STAé) used a common designation system for the vast majority of engines produced in France, which signified the major attributes of the particular engines:- Manufacturer - In this case Hispano-Suiza 12 - the number of cylinders in any configuration (V, straight, W, horizontally opposed, radial, etc.). Y - the family letter in capitals (note: in at least two instances the family designator consisted of two letters in capitals e.g. 14AA and 14AB), advancing alphabetically. (note:Hispano-Suiza avoided W to avoid confusion with W / Broad-arrow engines) a – sub variant indicator, (which could also indicate the rotation of the engine, where otherwise identical engines with opposite hand rotation were built, e.g. 12Ndr anti-clockwise and 12Nfr clockwise). r – attribute indicators, denoting various attributes that the engine might have, (r = reduction gearing, i = fuel injection, s = supercharged, etc.) 1 - sub-sub variants were denoted by using a number after the letters, (e.g. 12Xhrs and 12Xhrs1), usually indicating differences in ancillary equipment.

Thus the 12Xgrs was of the X family, with reduction gearing and supercharger, whereas the 12Xhrs was identical but rotated in the opposite direction.

Number system The STAé introduced a numbered attribute indicator from the late 1930s, thus;

12Y-26, 12Y-27 – left and right rotation versions of the same engine.

Basic versions of each engine had even numbers and opposite rotation version were odd numbered.

List of H-S piston aero-engines Data from:Moteurs d'Aviation Hispano-Suiza

Livre d'Or de la Société Française Hispano-Suiza

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Jun 28

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Jan 28

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Nov 29

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Dec 30

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Jun 30

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Nov 31

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Apr 32

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Oct 32

Hispano-Suiza:Revue et Bulletin Technique de la Société Française Hispano-Suiza Jan-Jun 35

Le moteur-canon V8 Hispano-Suiza

HISPANO-SUIZA:LES MOTEURS DE TOUS LES RECORDS

Aviafrance

5Q

6M 6Mb 6Mbr

6P 6Pa

8A 8Aa 8Ab

8B 8Ba 8Bb 8Bc 8Bd 8Be 8Bec

8C 8Cb

8F 8Fa 8Fb 8Fe

9Q 9Qa 9Qb 9Qc 9Qd 9Qdr

9T Produced under licence from Clerget, derived from the Clerget 9C, diesel radial engine.

9V 9Vr 9Vb 9Vbr 9Vbrs 9Vbs 9Vd 9V-10 9V-11 9V-16 9V-17

12B (1945)

12F 12Fd

12G (Type 50) 12Ga 12Gb

12H (Type 51) 12Ha 12Hb 12Hbr 12Hbxr

12J (Type 52) 12Ja 12Jb

12K Kb Kbrs

12L Lb Lbr Lbxr

12M(Type 57) 12Mb/500 12Mb/500r 12Mc/500 12Mcr/500 12Md 12Mdr 12Mdsh

12N (Type 61) 12Nb/650 12Nbr/650 12Nbrs/650 12Nc 12cNr: 12Ndr 12Ner 12Nfr 12Ngr 12Ns 12Nsr 12Ns Special 12Nsr Special

12X (Type 72) 12Xbr 12Xbrs 12Xbrg 12Xbr 12Xbrs 12Xbrs1 12Xdrs 12Xfrs 12Xgrs 12Xgrs1 12Xhrs 12Xhrs1 12Xirs 12Xjrs (Type 76) with calibre Hispano-Suiza HS.404 cannon between cylinder banks, firing through propeller shaft. 12Xcrs 12Xers 12Xirs 12Xjrs 12Xirs1 12Xjrs1 12X-13

12Y(Type 73) 12Ybr 12Ybrg 12Ybrs1 12Ygrs 12Ydr 12Ydrs 12Ydrs1 12Ydrs2 12Yfrs 12Yfrs1 12Yfrs2 12Y-21 12Y-25 12Y-26 12Y-27 12Y-28 12Y-29 12Y-38 12Y-39 (Type 77) with 20 mm Hispano-Suiza HS.404 cannon between cylinder banks, firing through propeller shaft. 12Ybrs 12Ycrs 12Y-28 12Y-29 12Y-30 12Y-31 12Y-32 12Y-33 12Y-36 12Y-37 12Y-41 12Y-45 12Y-47 12Y 49 12Y-50 12Y-51

12Z (Type 89) 12Z-1 12Z-17 12Z-89

14AA(Type 79) 14AA-00 14AA-01 14AA-02 14AA-03 14AA-04 14AA-05 14AA-06 14AA-07

14AB 14AB-12 14AB-13

14H 14Ha-7a 14Hbs 14Hbrs

14U Produced under licence from Clerget, derived from the Clerget 14F, diesel radial engine.

Hispano Suiza 400hp V-16

Hispano Suiza 600hp V-16

18R

18S 18Sb 18Sbr

24Y (Types 82 and 90)

24Z (Type 95)

36Y

48H

48Z

Whirlwind

Abadal 12Y(HS 8 with a third inverted vertical bank) at 2,500 rpm, with reduction gear, weighing .

Hispano-Suiza in-house Type designations Data from:

The Hispano-Suiza Type numbers were used for all Hispano-Suiza products, including cars trucks and engines: Types 21, 22 and 23 are known to have been cars.

Type 31 Prototype, (bxs ), with mixed cooling (11 fins) and initial production 8A, (bxs ), with 8 cooling fins, 1,450 rpm, .

Type 34 8Aa, 1800 rpm, 4.7:1 compression, , 100% water-cooling.

Type 34-S (S for surcomprimé) 8Ab, 1800 rpm, 5.3:1 compression, , 100% water-cooling.

Type 35 8B, 2,000 rpm, , geared.

Type 35-S (S for surcomprimé) 8B, 2,000 rpm, , high compression, geared.

Type 36 8B with Lewis gun

Type 38 8BeC, Type 36 with a modified SAMC Model 37 cannon

Type 39 Coupled engines

Type 40 (8E ?)

Type 41 (8A ?)

Type 42 8Fb, (bxs ), , at 1,800 rpm.

Type 42VS 8Fe

Type 43 cannon equipped project

Type 44 A later, little used, moteur-canon version.

Type 45 cannon

Type 50 12G

Type 51 12H

Type 52 12J

Type 57 12M

Type 61 12N

Type 72 12X

Type 73 12Y

Type 76 12X with cannon

Type 77 12Y with cannon

Type 79 14AA

Type 82 24Y

Type 89 12Z

Type 90 24Y

Type 95 24Z

Type 96 48Z

Specifications Data from: This table gives the major attributes of each engine model, where known. Model Bore Stroke Capacity Comp. Wt. dry T/O pr T/O rpm S. charger Red. gear Rated pr Rated rpm Rated alt Comments5Q5.1nDD2,000S/L5-cyl. Radial6Pa5.52,100nDD6 cyl. In-line water-cooled6Mb62,100nDD6 cyl. In-line water-cooled6Mbr62,100n0.5:16 cyl. In-line water-cooled8Aa4.72,100nDDV-8 90°8Ab5.32,100nDDV-8 90°8Ad5.32,100nDDV-8 90°8Fb5.32,100nDDV-8 90°8Fe5.52,100nDDV-8 90°9Qa5.1nDD2,000S/L9-cyl. Radial9Qb5.1nDD1,800S/L9-cyl. Radial9Qc6nDD2,200S/L9-cyl. Radial9Qcx5.1nDD2,200S/L9-cyl. Radial9Qdr6n0.615:12,200S/L9-cyl. radial9V5.3nDD1,900S/L9-cyl. Radial9Vr5.3n0.63:11,950S/L9-cyl. radial9T162,100nDD1,900S/L9-cyl. radial diesel engine12Ga5.32,100nDD1,800S/LW-12, 3x twin carbs12Gb62,100n2,000S/LW-12, 3x twin carbs, 300 built12Ha5.32,100nDD1,800S/L6x twin carbs12Hb62,100nDD2,000S/L6x twin carbs, 750 built12Hbr62,100n0.5:12,000S/L6x twin carbs12Ja5.32,100nDD1,800S/L12Jb62,100NDD2,000S/L12Kb62,100nDD2,000S/LW-12 60°12Lb6:12,100n2,000S/L12Lbr6:12,100n0.5:12,000S/L12Mb62,100nDD2,000S/L 6x twin carbs, 600 built12Mbr62,000n0.5:11,950S/L 6x twin carbs12Mc72,200nDD2,000S/L 6x twin carbs12Nb6.2:12,100nDD2,000S/L6x Zenith twin carbs12Nbr6.2:12,100n0.5:12,000S/L6x Zenith twin carbs12Nbrs6.2:1y1,950S/L6x Zenith twin carbs, 11,700 built12Xbr 6.4:12,200n0.666:112Xbrg 5.8:12,400n0.666:12,400with Gaveur (mixture distributor)12Xbrs 5.8:12,600y0.666:12,6006x Zenith single carbs12Xirs 5.8:12,600yy6x Zenith single carbs, 800 built, 85 Octane12Ybr6.4:12,200n0.666:112Ybrg5.8:12,400n0.666:12,400with Gaveur (mixture distributor)12Ybrs5.8:12,400y0.666:12,40012Y-30/-312,400y0.666:12,400-30 LH rotation, -31 RH rotation, with cannon12Y-32/-332,400y0.666:12,400-32 LH rotation, -33 RH rotation12Y-36/-372,400y0.55:12,400-36 LH rotation, -37 RH rotation12Y-50/-517:12,500y0.666:12,500-50 LH rotation, -51 RH rotation12Z-17:12,800y 2-speed0.60:1high 2,800with cannon18Sb6.22,100nDD2,000S/LW-18 80°18Sbr6.22,100n0.5:12,000S/LW-18 80°14U162,200nDD1,900S/L14-cyl. radial diesel engine14AA-00 / -016.2y (5.95:1)DD2,10014-cyl. radial, -00 RH -01 LH14AA-02 / -036.2y (5.95:1)0.6252,10014-cyl. radial, -02 RH -03 LH14AA-04 / -056.2y (10:1)0.6252,12514-cyl. radial, -04 RH -05 LH14AA-06 / -076.2y (10:1)DD2,12514-cyl. radial, -06 RH -07 LHJ-5 Whirlwind1,800nDDLicence-built Wright J-5

Applications and chronology + Chronology of Hispano-Suiza aero-engines and a selection of their applications Year Aircraft Role Engine(s) no. built1922Breguet XIX B.2Two-seat bomber1x12Hb4,0001922Nieuport-Delage NiD 43Seaplane fighter1x12Hb11923CAMS 38Schneider Cup racer1x12Fd11924Potez 26Single-seat bomber / attack aircraft1x12Ha11926Avimeta 88Two-seat fighter1x 12Hb11926Nieuport-Delage NiD 42Fighter1x 12Hb251926Levasseur PL.7Shipborne Torpedo-bomber1x 12Lbr411927Morane-Saulnier MoS-121Light fighter1x 12Jb11927Nieuport-Delage NiD.52Fighter1x 12Hb1251928Latécoère 32.3Postal transport flying boat1x 12Hbr61928Nieuport-Delage NiD.62Fighter 6911926Blériot 127.14-seat multi-role combat aircraft 431928Nieuport-Delage NiD.62Fighter 6751928Breguet 284T8-seat airliner1x 12Lbrx81928C.A.M.S. 53Postal flying boat transport 311929Bernard 20Fighter1x 12Jb11929Nieuport-Delage NiD.72Fighter1x 12Hb251929Levasseur PL.14Shipborne torpedo-bomber1x 12Nb301929Levasseur PL.10Reconnaissance1x 12Lb1601929Latécoère 28Transport 8 passengers 361929Potez 390Observation1x 12Hb2401930Breguet Br 270Bomber1x 12Hb1501930Dewoitine D.27Fighter1x 12Mb801930Dewoitine D.33 Trait d'unionlong-distance record breaker 11930Dewoitine D.35Transport1x 9Q1931Dewoitine D.530Fighter 61931Latécoère 290Bomber land/floatplane 351931Latécoère 35.0Transport 10 passengers3x 12Jb11931Blériot 125Transport 12 passengers2x 12Hbr11931C.A.M.S. 58Transport 6 passengers2x 12Nbr ( C.A.M.S. 58.0, 58.3)3 (+1x 58.2)1932Bernard 260Fighter1x 12Xbrs11932Dewoitine D.500Fighter1x 12Xcrs2601932Dewoitine D.560Fighter1x 12Xbrs11932Lioré et Olivier H.256Patrol floatplane2x 12Nbr51932Morane-Saulnier MS.325Fighter1x 12Xcrs11932Nieuport-Delage NiD.122Fighter 3 (HS powered)1932Levasseur PL.15Reconnaissance1x 12Nbr161932Latécoère 500Transport transatlantic3x 12Jb ( Laté 500 / 501)21933Latécoère 300Postal transport flying-boat 71933Couzinet 70Transport transatlantic3x 12Nb11933Blériot 5190Postal transport flying-boat4x 12Nbr11934Breguet 530 SaigonTransport flying-boat3x 12Ybr51934Loire 130Ship-borne reconnaissance flying-boat1x 12Xirs1251934Potez 540Reconnaissance-bomber2x 12Xirs1851934Blériot-SPAD S.510Fighter1x 12Xbrs801935Dewoitine D.510Fighter1x12Ybrs1211935Dewoitine D.513Fighter1x12Ycrs11935Latécoère 520Transport transatlantic 0x 520, 1x 522, 3x 5231935Nieuport Ni-140Dive-bomber2x 12Xcrs21936Potez 621Transport 7 passengers2x 12Xirs10 + 3 conversions1936Farman F.220Postal transport 91936Latécoère 298Torpedo-bomber floatplane / reconnaissance1x 12Ycrs11481937Lioré et Olivier H-246Transport flying-boat 61937Loire 102Transatlantic transport flying-boat 11937Bloch MB.160Transport 16 passengers4x 12Xirs21938Dewoitine D.520Fighter1x 12Y-459001938Morane-Saulnier MS.405Fighter1x 12Y-31171938ANF Les Mureaux 110Observation 2-seater1x 12Ycrs2971938SNCAC NC.223Night bomber 131938Potez-CAMS 141Transatlantic transport flying-boat 11939Dewoitine D.550Fighter1x 12Y-511 1939Lioré et Olivier H-47Transatlantic transport flying-boat 61939Loire-Nieuport 40Ship-borne dive-bomber 721939Morane-Saulnier MS.406Fighter1x 12Y-451,0001940(Vernisse-Galtier) Arsenal VG-33Fighter1x 12Y-311551940Breguet 482 B.44-seat bomber4x 12Z21940Morane-Saulnier MS.450Fighter1x 12Y-5131940Potez 230Fighter1x 12Y-3111942Potez-CAMS 161Transatlantic transport flying-boat 1

References