Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Blank table for comparing weights and weights per horsepower of various series of 'Falcon' engines.11th Nov 1917Box 36 \ 2  scan 043
Requesting updated power and consumption figures for Eagle and Falcon engines for an Instruction Book.11th Nov 1917Box 36 \ 2  scan 044
Chasing for data to produce power and consumption curves for Eagle 8 and Falcon 3 series engines.19th Nov 1917Box 36 \ 2  scan 045
Power and consumption curve data for the Falcon & Beagle engines.28th Nov 1917Box 36 \ 2  scan 046
Data table of powers, consumptions, and efficiencies for the Falcon Engines Series 3.30th Nov 1917Box 36 \ 2  scan 047
Data table of power, consumptions, and efficiencies for the Eagle Engine Series 8.30th Nov 1917Box 36 \ 2  scan 048
Performance curves for the Falcon Engine showing power, consumption, torque, B.M.P., and B.T.E.21th Dec 1917Box 36 \ 2  scan 049
Performance comparison of a Martinsyde Scout aircraft fitted with 'Falcon' 111 and 300 HP Hispano engines.26th Apr 1917Box 36 \ 2  scan 050
Specification sheet for the 'Falcon' aero engine detailing performance and physical characteristics.26th Apr 1917Box 36 \ 2  scan 051
Specifications for engine components including carburation, pipe connections, and starter.22th Aug 1917Box 36 \ 2  scan 052
Instruction sheet for Falcon engine tests, detailing valve timing for best power.22th Aug 1917Box 36 \ 2  scan 053
Instructions and results for Falcon engine performance tests, before and after modifications.22th Aug 1917Box 36 \ 2  scan 054
Test results comparing power and compression on a Falcon engine with different pipe configurations.22th Aug 1917Box 36 \ 2  scan 055
Performance data and discussion for the 'Falcon' engine with various fuel types and throttle settings.10th Feb 1919Box 36 \ 2  scan 056
The performance and petrol consumption of the 'Falcon' engine at different RPMs.6th May 1919Box 36 \ 2  scan 057
Table comparing the Brake Horsepower of 'Falcon' engines for Series 1, 2, and 3 at various speeds.6th May 1919Box 36 \ 2  scan 058
Comparative table of fuel consumption for various series of Falcon engines at different speeds.28th Apr 1917Box 36 \ 2  scan 059
Table of comparative fuel consumptions for various series of 'Falcon' engines.28th Apr 1917Box 36 \ 2  scan 060
Obtaining consumption figures for 'Eagle' and 'Falcon' engines.1st Dec 1920Box 36 \ 2  scan 061
The 10-hour endurance test of the first 'Hawk' engine.21th Jan 1916Box 36 \ 2  scan 062
Page 2 of an engine test report detailing performance data, component observations, and inspection results.21th Jan 1916Box 36 \ 2  scan 063
Engine test, detailing observations on components, lubrication, faults, and preparations for delivery.21th Jan 1916Box 36 \ 2  scan 064
Recurring failure of a Dixie magneto during a 75 HP engine endurance test.21th Jan 1916Box 36 \ 2  scan 065
Power curve table from Brazil Straker Ltd. showing the average performance of ten recently tested 75 HP engines.16th Nov 1916Box 36 \ 2  scan 066
Performance comparison table for the Eagle, Falcon, and Hawk aero engines.24th Nov 1916Box 36 \ 2  scan 067
Request for the power curve of Brazil Straker built Hawk engines.9th Feb 1917Box 36 \ 2  scan 068
The power curve figures for the 'Hawk' Engine.13th Feb 1917Box 36 \ 2  scan 069
Letter detailing the average power curve data for ten 75 HP engines.15th Feb 1917Box 36 \ 2  scan 070
Test results for a Hawk engine using a standard R.R.C.H. Falcon carburetter, detailing fuel consumption against RPM and horsepower.22th Aug 1917Box 36 \ 2  scan 071
Test results for a Hawk engine using a car carburetter, measuring fuel consumption and horsepower at various RPMs.22th Aug 1917Box 36 \ 2  scan 072
Hawk engine tests comparing power output from R.R.CH. and car carburetors.22th Aug 1917Box 36 \ 2  scan 073
Hawk engine test results comparing the efficiency of the R.R.C.H. (Falcon) carburettor and a car carburettor.22th Aug 1917Box 36 \ 2  scan 074
Recommended improvements to the 'Hawk' engine for airships.26th Jun 1918Box 36 \ 2  scan 075
List of proposed modifications for the 'Hawk' engine, including parts from the 'Falcon' engine.26th Jun 1918Box 36 \ 2  scan 076
Performance of 'Hawk' engines and a proposed modification for airship use.28th Jun 1918Box 36 \ 2  scan 077
Modifications and performance test results for the 'Hawk' engine X.3320 and X.2935.18th Oct 1918Box 36 \ 2  scan 078
Test report on the 'Hawk' engine, detailing power, consumption figures, and modifications for airship use.1st Oct 1919Box 36 \ 2  scan 079
Page of engine performance data and a note about sending modified parts.8th Oct 1918Box 36 \ 2  scan 080
Summary of power increases and specifications for the Hawk engine from 1915 to 1918.1st Dec 1918Box 36 \ 2  scan 081
Summary of power increases and specifications for the Hawk, Eagle, Falcon, and Condor aero engines.3rd Dec 1918Box 36 \ 2  scan 082
High fuel consumption during carburetter tests on the 'Hawk' engine.1st Dec 1918Box 36 \ 2  scan 083
Attaching the Horse Power Curve for the Hawk Aero engine to the Test Department.2nd Feb 1921Box 36 \ 2  scan 084
Power curve data table for a 75 HP engine, averaged from ten recent tests by Brazil Straker Ltd.16th Nov 1916Box 36 \ 2  scan 085
Graph of maximum power and consumption curves for the Falcon X engine.15th Apr 1924Box 36 \ 2  scan 086
Falcon X engine test detailing issues with pre-ignition, valve wear, and water leakage after 14 hours of running.30th Jul 1926Box 36 \ 2  scan 087
Engine testing, fault investigation, and modifications for the FX.2 engine.30th Jul 1926Box 36 \ 2  scan 088
Report page discussing engine performance data, propeller limitations, and design schemes for the F.X. engine.12th Nov 1926Box 36 \ 2  scan 089
Performance data and proposal for fitting Claudel carburettors on a 'V' type engine.12th Nov 1926Box 36 \ 2  scan 090
Power curve test for a Falcon X wet liner engine fitted with new horizontal carburetters.13th Nov 1926Box 36 \ 2  scan 091
The 1-hour final test of the F.X. No.10 engine, detailing performance and oil consumption improvements.24th Nov 1926Box 36 \ 2  scan 092
Engine test results and observations report, including a magneto failure and oil leaks.24th Nov 1926Box 36 \ 2  scan 093
Graph showing throttle and consumption curves for the FX No 10 engine after its final official test.24th Nov 1926Box 36 \ 2  scan 094
The reverse of an archival document with a handwritten reference number and date, and an ink stamp.25th Nov 1926Box 36 \ 2  scan 095
Blueprint graph showing power, BMEP, and consumption curves plotted against RPM for engine test F.X. No 10.24th Nov 1926Box 36 \ 2  scan 096
Heavily faded typed document with a handwritten reference and a stamped date.25th Nov 1926Box 36 \ 2  scan 097
2-hour Acceptance Test for the Aeronautical Inspection Directorate (A.I.D.).1st Dec 1926Box 36 \ 2  scan 098
Power curve test report for an F.10 engine, showing results with and without silencers.13th Dec 1926Box 36 \ 2  scan 099
Investigation report on water leaks found in engine cylinders due to a porous casting.12th Dec 1926Box 36 \ 2  scan 100
Horsepower rating for the F.10 engine.12th Dec 1926Box 36 \ 2  scan 101
Final acceptance test report for H.I.D. power and throttle curves.22th Feb 1927Box 36 \ 2  scan 102
Test report notes on water leaks and petrol pump performance including suction and pressure measurements.15th Mar 1927Box 36 \ 2  scan 103
Regained horsepower on an engine and the effect of air intakes.15th Mar 1927Box 36 \ 2  scan 104
Comparing the performance of engine models X-F-12, X-F-14, and X-F-18.14th Mar 1927Box 36 \ 2  scan 105
Comparison of running conditions for engines X-F-12 and X-F-14, detailing differences in pistons, rings, and tappet clearances.14th Mar 1927Box 36 \ 2  scan 106
Graph showing comparative horsepower curves for XF14 and XF12 engines, detailing the effect of intake system removal.14th Mar 1927Box 36 \ 2  scan 107
2-hour acceptance test for the A.I.D.31th Mar 1927Box 36 \ 2  scan 108
Analysis of a camshaft bearing flange failure and its potential causes, including thermal expansion.20th Apr 1927Box 36 \ 2  scan 109
Progress report on an F.10 type test, detailing non-stop engine runs and reliability.20th Apr 1927Box 36 \ 2  scan 110
Interim report on the X-F-18 100 hours type test, detailing power curve and initial endurance runs.20th Apr 1927Box 36 \ 2  scan 111
Comparative power curves between old and new carburettors.27th Apr 1927Box 36 \ 2  scan 112
Continuation page of a report discussing performance curves from an engine arrangement and planned modifications.27th Apr 1927Box 36 \ 2  scan 113
Comparative power curves for the XF.12 engine with old, new, and small diffuser carburettors.27th Apr 1927Box 36 \ 2  scan 114
Archival cover sheet with a reference number and date.29th Apr 1927Box 36 \ 2  scan 115
Blueprint diagram of a jet nozzle tried with new carburettors, showing modifications.28th Apr 1927Box 36 \ 2  scan 116
Cover page with a handwritten reference number and a date stamp.29th Apr 1927Box 36 \ 2  scan 117
Progress report on an F.10 type engine test, detailing a 90-hour non-stop run.28th Apr 1927Box 36 \ 2  scan 118
Test report detailing the 100-hour endurance run and power curve results for a Falcon X engine.3rd May 1927Box 36 \ 2  scan 119
Test report page detailing carburetter freezing issues, oil leaks, and engine performance data from various test phases.3rd May 1927Box 36 \ 2  scan 120
Engine testing, detailing oil and water leaks and performance metrics over multiple 10-hour hangar tests.3rd May 1927Box 36 \ 2  scan 121
Engine endurance test log detailing performance, water leaks, a back-fire incident, and a valve spring failure.3rd May 1927Box 36 \ 2  scan 122
Engine test bed report detailing results from endurance, speed, power, consumption, and leak tests.3rd May 1927Box 36 \ 2  scan 123
Engine test report detailing boiling, water pump, circulation tests, and issues with spark plugs and valve tappet clearance.3rd May 1927Box 36 \ 2  scan 124
Graph of power and consumption curves for the Falcon 10 engine Nแต’ 18, before and after a 100-hour type test at full throttle.3rd May 1927Box 36 \ 2  scan 125
The reverse of an archival document with handwritten references and a date stamp.3rd May 1927Box 36 \ 2  scan 126
Chart showing performance figures obtained during a 100-hour type test of a Falcon 10 engine.30th Apr 1927Box 36 \ 2  scan 127
Cover sheet with a handwritten reference and a date stamp.3rd May 1927Box 36 \ 2  scan 128
Request for the horsepower curve and take-off horsepower for the high compression F.11 engine.1st Jul 1927Box 36 \ 2  scan 129
The effect of using longer duration inlet camshafts.8th Aug 1927Box 36 \ 2  scan 130
Comparative power curve graph showing the effect of a later inlet closing on F.10 engines with rollerless rockers.8th Aug 1927Box 36 \ 2  scan 131
Cover sheet with a handwritten reference number and a date stamp.10th Aug 1927Box 36 \ 2  scan 132
Urgent request for power curves for the standard F.11 engine with 6 to 1 and 8 to 1 compression ratios.11th Aug 1927Box 36 \ 2  scan 133
Comparative compression curves for the Falcon engine.17th Aug 1927Box 36 \ 2  scan 134
Graph comparing power curves for the R-R F.10 and F.11 engines with different compression ratios and fuels.13th Aug 1927Box 36 \ 2  scan 135
Stamped and referenced document, likely a cover sheet or blank page.17th Aug 1927Box 36 \ 2  scan 136
The average power and consumption curves for F.11 & 12 production engines from August-October 1927.11th Nov 1927Box 36 \ 2  scan 137
Graph of average power and fuel consumption curves for F.XI & F.XII production engines.10th Nov 1927Box 36 \ 2  scan 138
Performance chart comparing various metrics for F.11 and F.12 production engines from August to October 1927.21th Nov 1927Box 36 \ 2  scan 139
The reverse side of a document with handwritten annotations and a date stamp.9th Nov 1927Box 36 \ 2  scan 140
Performance chart for F.11 & F.12 production engines from August to October 1927, showing various metrics at different RPMs.2nd Nov 1927Box 36 \ 2  scan 141
Cover page with handwritten reference numbers and a stamped date.9th Nov 1927Box 36 \ 2  scan 142


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