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HYDRA

HYDRA. 16 CYLINDER TWO ROW, IN LINE (OCTAGON) AIR COOLED RADIAL. T.O POWER 760 HP BORE 5.0 in STROKE 5.0 in SWEPT VOLUME 1570 cu in COMPRESSION RATIO 6.0 : 1 SUPERCHARGED

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HYDRA

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  1. HYDRA 16 CYLINDER TWO ROW, IN LINE (OCTAGON) AIR COOLED RADIAL T.O POWER 760 HP BORE 5.0 in STROKE 5.0 in SWEPT VOLUME 1570 cu in COMPRESSION RATIO 6.0 : 1 SUPERCHARGED DRIVE : GEARED 0.424:1 No. BUILT 2 DESIGN 1932 1ST RUN 1933 SUFFERED VIBRATION PROBLEMS AND WAS OVERTAKEN BY THE SLEEVE VALVE DESIGN

  2. HYDRA FLIGHT TESTING 1933 INSTALLATION IN HAWKER HARRIER

  3. SLEEVE VALVE ENGINES PERSEUS 580 hp 1932 AQUILA 460 – 750 hp 1934 HERCULES 1275 – 2200 hp 1935 TAURUS 1050 hp 1936 CENTAURUS 1800 – 3300 hp 1938 ORION 3750 – 4000 hp 1944

  4. THE BRISTOL SLEEVE VALVE

  5. PERSEUS SLEEVE VALVE SINGLE ROW 9 CYLINDER RADIAL T.O. POWER 580 – 890 hp BORE 5.75 in STROKE 6.5 in SWEPT VOLUME 1520 cu in COMPRESSION RATIO 6.75 : 1 SUPERCHARGED DRIVE – GEARED 0.5 :1 DESIGN 1932 PRODUCTION 1932 - 42 No. BUILT 2892

  6. SOME PERSEUS APPLICATIONS BLACKBURN ROC 2 – SEATER FIGHTER VICKERS VILDEBEESTES CONVERTED TO PERSEUS Mk VIII D.H. 95 FLAMINGO 1938 BLACKBURN BOTHA

  7. AQUILA 9 CYLINDER SINGLE ROW AIR COOLED RADIAL T.O. POWER 420 hp BORE 5.0 in STROKE 5.375 in SWEPT VOLUME 949.5 cu in COMPESSION RATIO 6.5 : 1 SUPERCHARGED M GEAR 5.7: 1 DRIVE – GEARED 0.500 : 1 DESIGN 1933 FIRST RUN 1.9.34 CIVIL TYPE TEST OCT. 1934 FLOWN IN BRISTOL BULLDOG AND BRISTOL T 143 No. BUILT 6

  8. INSTALLATIONS / APPLICATIONS VICKERS VENOM 8 – GUN FIGHTER WITH 700 hp ACQUILA

  9. TAURUS 14 CYLINDER TWO ROW AIR COOLED RADIAL T.O. POWER 1050 / 1130 hp BORE 5 in STROKE 5.625 in SWEPT VOLUME 1550 cu in COMMPRESSION RATIO 7.2 : 1 DESIGN 1936 PRODUCTION 1937 - 42 No BUILT 3724

  10. TAURUS APPLICATIONS FAIRY ALBACORE - 1938 TORPEDO BOMBER BRISTOL BEAUFORT Mk1 DESIGNED IN 1939 1013 BEAUFORT Mk 1 AIRCRAFT WERE PRODUCED WITH THE TAURUS

  11. HERCULES 14 CYLINDER TWO ROW AIR COOLED RADIAL T.O. POWER 1275 – 2200 hp BORE 5.75 in STROKE 6.5 in SWEPT VOLUME 2360 cu in COMPRESSION RATIO 6.75 : 1 7.0 : 1 SUPERCHARGED DRIVE 0.444 :1 DESIGN 1935 PRODUCTION 1935 - 65 No BUILT 65247 (UK) 1375 (FRANCE)

  12. HERCULES – MAIN W.W. 2 APPLICATIONS BRISTOL BEAUFIGHTER HANDLEY PAGE HALIFAX Mk 3

  13. SOME POST- WW 2 HERCULES APPLICATIONS BRISTOL FREIGHTER VICKERS VIKING NORD 2501 NORATLAS

  14. CENTAURUS T.O. POWER 1800 – 3300 hp BORE 5.75 in STROKE 7.0 in SWEPT VOLUME 3270 cu in COMPRESSION RATIO 7.2 : 1 SUPERCHARGED M & S GEAR DRIVE - GEARED 0.400 : 1 DESIGN 1937 PRODUCTION 1938 – 59 No BUILT 5330 18 CYLINDER TWO ROW AIR COOLED RADIAL

  15. SOME CENTAURUS APPLICATIONS BLACKBURN BEVERLEY HAWKER TEMPEST II AIRSPEED AMBASSADOR AND BRISTOL BRABAZON 1

  16. THE SLEEVE VALVE FAMILY FROM LEFT TO RIGHT ORION* - CENTAURUS - PERSEUS / HERCULES -TAURUS * THE ORION, DESIGNED 1941 ( 18 CYLINDER, 2 ROW RADIAL) BORE 6.5 in. CAPACITY 4,140 cu in. INITIAL RATING WAS TO BE 4,000 hp

  17. THE END PRODUCED BY THE VIDEO ARCHIVE TEAM ( RALPH DENNING, JOHN GOODWIN, DON MANNING & PAT WILSON ) AT THE BRISTOL BRANCH OF THE ROLLS – ROYCE HERITAGE TRUST RESEARCH ADVISORS - JOHN HEAVEN & ALAN BAXTER

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