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"Seeing the future by searching the past — Securing the future by saving the past" -- Alex Pong
The Aircraft Engine Historical Society is a non-profit educational and historical society that fosters an appreciation of the people, art, and science associated with aircraft engine development, manufacture, and use. Celebrating Our 20th Year (2001 – 2021) Features
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Torque Meter Journal of the Aircraft Engine Historical Society For seven years the AEHS published a prestigious quarterly journal, Torque Meter, which contained articles on all types of aircraft engines, both new and old. Topics included engines and the aircraft they powered with emphasis on the engine installation, propellers, accessories, cooling, operation, and maintenance. Torque Meter is no longer published. However, |
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Searchable Torque Meter Table of Contents
Volumes 1-7 (2002-2008) (488 K PDF) Searchable Torque Meter Alphabetic Feature and Column Index (106 K PDF) Most new articles are now published in the Members' Section AEHS Members also have access to the Members' Bulletin Board Join AEHS Now! |
In order to conserve bandwidth, many images and references provided by the Aircraft Engine Historical Society require the use of Portable Data Format (.pdf) and Tagged Image Format (.tif) file readers. Readers for these file formats can be downloaded free of charge by clicking on the icons below.
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The AEHS Needs Your Help!
Please help the Aircraft Engine Historical Society achieve its mission. We need donations (click here to donate) and we need material for publication on this web site. If you wish to contribute material, you can find submission guidelines
here. Please feel free to contact us about your article ideas.
Webmasters: Please feel free to link to this page of the AEHS site. Other pages may change and should not be linked.
04-01-2021 - Napier Nomad II Aircraft Engine Performance Verification
04-01-2021 - Manned U.S. Rocket Propulsion – Part 8.00: The Saturn V
04-01-2021 - Pratt & Whitney Field Service Information Letters (Members Section)
No. 3: R-1535 Master Rod, R-1830-64 Impeller Shaft and Ball Bearing Failures
No. 4: Sump Plug Material Change, Handling Failed Ignition and Carburetor Components
No. 5: R-985 Intake Pipe Flange Breakage, R-2000 Inter-Rocker Hose Assembly, R-2800 Fuel Transfer Inserts
No. 6: Shipping Cases Damaged in Transit
No. 8: R-2800 Radio Interference
No. 22: Engines, Aircraft Carburetor Settings and Notes
No. 27: R-2800 Fuel Feed Valve Housing Seals, R-2000 Impeller/Shaft Fit
No. 28: R-1830-64 Master/Articulated Rod Assemblies
No. 29: R-1830-86, R-1830-88, R-2000-3 Ignition Systems
No. 30: R-2800 Spark Plug Connectors
No. 32: Bendix Stromberg Pressure Carburetor Idle Adjustment; Carburetor Impact Tube Damage; Supercharger Regulators
No. 34: Oil Pressure Loss in Altitude Airplane Engines
No. 35: R-2800 Fuel Discharge Nozzles
No. 39: R-1830 Ignition Lead and Intake Pipe Interference
No. 40: R-1830 Crankshaft to Propeller Shaft Oil Transfer Pipe
No. 41: Hycar Nylon Fuel Feed Diaphragm
No. 42: R-1830 and R-2800 Loose Data Plates and Emblems
No. 46: Two-Stage and Two-Speed Blower Drive Clutches
No. 71: "K" Airship Carburetor Air Temperature
No. 72: Collapsible Boxes
No. 73: Corrosion in Storage Questionnaire
No. 74: Removal of R-2000 and R-1830 Cast Ignition Harness
No. 89: Chrome Plated Top Piston Rings
No. 90: Scintilla #47 Compound Used in R-2800 Distributor Fingers
No. 92: New CAA Mechanic's Certificate Regulations
No. 129: Military Engines and P&W Equivalents
No. 131: P&W Special Representatives
No. 132: R-2800 Hesitation and Momentary Cutting-Out
No. 133: Request for Field Data on Cast and Forged R-2800 Cylinder Barrels
No. 134: Engine Sudden Stoppage
No. 135: New Idle Adjustment Method
No. 136: Damaged Main Oil Screens When Testing Hydromatic Propellers with Engine Inoperative
No. 137: Airplane Manufacturer's Charts
03-27-2021 - Hispano-Suiza 16 FS Animation by Sergio Pasquali
03-19-2021 - Bill Brogdon - AEHS 2012 Convention Presentation, Diesel Aircraft Engines, Updated 20 Nov 2020 (Members Section)
03-01-2021 - AEHS Members 2021 Newsletter #1
03-01-2021 - Manned U.S. Rocket Propulsion – Part 7: The Saturn I and IB
03-01-2021 - Two-Stage Superchargers
02-25-2021 - Updates to S.D. Stanley’s 3-D Printed Pratt & Whitney R-1340
02-13-2021 - Book Review: The Canadair North Star
02-05-2021 - Book Review: The Secret Horsepower Race
02-02-2021 - Curtiss-Wright Maintenance Considerations in Design (Members Section)
02-01-2021 - Manned U.S. Rocket Propulsion – Part 6: The Titan Missile
02-01-2021 - Curtiss-Wright Exhaust System Investigations
01-12-2021 - Wright TC18: Theory of Operation (Members Section)
01-12-2021 - Wright TC18: Troubleshooting for Optimum Performance (Members Section)
01-12-2021 - Facts About the Wright Turbo Compound (Members Section)
01-06-2021 - Stories & Essays: Fingerprint Remover
01-06-2021 - Lecture: The Secret History of Fighter Aircraft Engine Development in WW2
01-06-2021 - Video: Delta Airlines Jet Engine Maintenance
01-05-2021 - Engine Development Through WWI
01-05-2021 - Bristol Brabazon Centaurus Power Plants
01-04-2021 - V-1710 Crankshaft Counterweight Capers at Allison, by Jerry Wells
01-01-2021 - Manned U.S. Rocket Propulsion – Part 5: The Atlas Missile
01-01-2021 - Curtiss-Wright 1953 Airline Engineering and Maintenance Meeting Minutes
VIII. Ignition (pp 195-213) (Members Section)
IX. Exhaust System (pp 214-223) (Members Section)
X. Cylinder Heads (pp 223-235) (Members Section)
XI. General Maintenance Problems (pp 236-243) (Members Section)
XII. General Operating Problems (pp 243-267) (Members Section)
XIII. Miscellaneous (pp 267-286) (Members Section)
12-10-2020 - AEHS Members 2020 Newsletter #4
12-09-2020 - Curtiss-Wright 1953 Airline Engineering and Maintenance Meeting Minutes
Contents, Opening Remarks (pp Cover - 5)
I. Front Section (pp 6-16) (Members Section)
II. Power Section (pp 17-59) (Members Section)
III. Cylinder Assembly (pp 60-99) (Members Section)
IV. Supercharger (pp 99-112) (Members Section)
V. Rear Section (pp 113-121) (Members Section)
VI. Lubrication (pp 121-157) (Members Section)
VII. Carburetion (pp 157-194) (Members Section)
12-07-2020 - Manned U.S. Rocket Propulsion – Part 4.1: The Redstone Missile
12-07-2020 - Manned U.S. Rocket Propulsion – Part 4.2: The Redstone Engine
11-19-2020 - Book Review: V-1710 and V-3420 Designs and Concepts
11-15-2020 - Dayton Aircraft Engines
11-09-2020 - Grumman Magnum Widgeon
11-07-2020 - GMC Fisher Body Div Aircraft Program Report: 1 Nov 1941 - 31 Aug 1942 (Members Section)
11-07-2020 - GMC Fisher Body Div Aircraft Program Report: 1 Sep 1942 - 30 Apr 1943 (Members Section)
11-07-2020 - GMC Fisher Body Div Aircraft Program Report: 1 May 1943 - 31 Oct 1943 (Members Section)
11-07-2020 - GMC Fisher Body Div Aircraft Program Report: 1 Nov 1943 - 30 Jun 1944 (Members Section)
11-06-2020 - Manned U.S. Rocket Propulsion – Part 3: The Navaho Program
11-01-2020 - Manned U.S. Rocket Propulsion – Part 1: Introduction
11-01-2020 - Manned U.S. Rocket Propulsion – Part 2.1: German V-2 Predecessors
11-01-2020 - Manned U.S. Rocket Propulsion – Part 2.2: V-2 Propulsion
10-18-2020 - The Hamilton Standard Superhydromatic Propeller, additional material
10-10-2020 - General Motors Research Laboratory X-250 Article Revised (Members Section)
10-06-2020 - U.S. WWII Engine Production
10-06-2020 - U.S. WWII Propeller Production
10-03-2020 - Allison V-1410 Firing Order
10-01-2020 - U.S. Manned Rocket Propulsion Evolution: Part 1 — Introduction
10-01-2020 - Szekely SR3-Model-L, -O Instruction Book (Members Section)
10-01-2020 - Continental Aircraft Engines for Utility Planes Brochure (Members Section)
10-01-2020 - Westinghouse Turbojet Engines Brochure (Members Section)
10-01-2020 - Turbosupercharger Control Systems: Part 1 — Oil Pressure Powered
10-01-2020 - Turbosupercharger Control Systems: Part 2 — Electronic
09-23-2020 - Hirth Engine Animation, by Sergio Pasquali
09-01-2020 - Pratt & Whitney Engine Operation Information Letters
No. 26: Emergency Use of Prime During Icing Conditions (Members Section)
No. 27: Water Injection (Members Section)
No. 28: Double Wasp CB Mixture Settings at Maximum Continuous Power (Members Section)
No. 29: Carburetor Preheat Use Before Takeoff (Members Section)
No. 30: PWA Operating Instructions for Military R-985 Models (Members Section)
No. 31: Cruise Spark Advance (Members Section)
No. 32: Effect of Fuel Grade on Engine Performance (Members Section)
No. 33: Overboost Limits (Members Section)
09-01-2020 - WWII Lorin Ramjet Experiments
09-01-2020 - Wright P-1 CAD Rendering, by Stephen Stanley
09-01-2020 - Interview with Charles E. Taylor
09-01-2020 - AEHS Members 2020 Newsletter #3
08-01-2020 - Pratt & Whitney Engine Operation Information Letters
No. 13: Engine Overspeeding (Members Section)
No. 14: Checking Propellers after Reverse Pitch Operation; Firewall Shutoff Valve Operation (Members Section)
No. 15: Fuel Boost Pump Use (Members Section)
No. 16: Double Wasp CA Power Loss in Moist Air (Members Section)
No. 17: Mixture Strength Effect on Cylinder Head Temperature and Horsepower (Members Section)
No. 18: Idle Mixture Setting (Members Section)
No. 19: Detonation and Preignition (Members Section)
No. 20: Full Takeoff Power Use (Members Section)
No. 20a: Engine Rating, Limits and Power Control (Members Section)
No. 21: Transport Carburetor Setting (Members Section)
No. 21a: Cruise Mixture Setting Using Torque Pressure Drop (Members Section)
No. 22: Manifold Pressure versus RPM at Part Throttle (Members Section)
No. 23: Extinguishing Blower Fires During Starting (Members Section)
No. 24: Prestart Engine Procedure (Members Section)
No. 25: Minimum Manifold Pressure (Members Section)
08-01-2020 - Hamilton Standard Variable Camber Propellers
07-17-2020 - American Sleeve Valve Aircraft Engines Special Offer
07-09-2020 - 1942 Curtiss-Wright Promotional Video
07-06-2020 - Pratt & Whitney Engine Operation Information Letters
No. 1: Carburetor Air Temperature Measurement on Single-Row Engines (Members Section)
No. 2: Fuel Pressure Limits with Pressure Injection Carburetors (Members Section)
No. 3: Wasp Mag Check; Twin Wasp CHT Limits; Wasp Major Torquemeter Constants (Members Section)
No. 4: Icing with Float Type Carburetors (Members Section)
No. 5: Practice Feathering and Unfeathering Procedures (Members Section)
No. 6: Reverse Pitch Propeller Operation (Members Section)
No. 7: Runaway Propeller Procedure (Members Section)
No. 8: High-Blower Takeoff Carb Air Temp Limits (Members Section)
No. 9: Commercial Engine Rating Definitions (Members Section)
No. 10: Preflight Power Checking (Members Section)
No. 11: Magneto Check During Flight (Members Section)
07-06-2020 - Pratt & Whitney Double Wasp Description Added
07-06-2020 - Pratt & Whitney Wasp Major Description Added
07-03-2020 - Renault 80hp Engine Instruction (Members Section)
07-03-2020 - Renault 150hp Engine Instruction (Members Section)
06-13-2020 - German WWI Engine Factories (French Report) (Members Section)
06-13-2020 - German WWI Propeller Factories (French Report) (Members Section)
06-13-2020 - German WWI Engine Development (French Report) (Members Section)
06-13-2020 - German WWI Hiero 200, 230 hp Engines (French Report) (Members Section)
06-13-2020 - German WWI Basse and Selve 300 hp Engines (French Report) (Members Section)
06-13-2020 - German WWI Benz 575-675 hp Engines (French Report) (Members Section)
06-13-2020 - German WWI Variable-Pitch Propellers (French Report) (Members Section)
06-08-2020 - Rolls-Royce Vulture II and IV Description (Members Section)
06-08-2020 - Grumman Ranger Widgeon
06-07-2020 - Pratt & Whitney Twin Wasp E (R-2180) Description
06-02-2020 - Pratt & Whitney Twin Wasp D (R-2000) Description
06-02-2020 - AEHS Members 2020 Newsletter #2
05-11-2020 - Wright Cyclone Engine Brochure (R-1750), 1928 (Members Section)
05-11-2020 - Wright Cyclone Engine Brochure (R-1750), 1930 (Members Section)
05-11-2020 - Wright Cyclone Engine Brochure (R-1820), 1930 (Members Section)
05-11-2020 - Wright Cyclone Engine Brochure (R-1820), 1933 (Members Section)
05-11-2020 - Wright F-50 Series Cyclone Engine Brochure (R-1820), 1935 (Members Section)
05-11-2020 - Wright G Series Cyclone Engine Brochure (R-1820), 1936 (Members Section)
05-11-2020 - Wright G-100 Series Cyclone Engine Brochure (R-1820), 1938 (Members Section)
05-11-2020 - Wright G-200 Series Cyclone Engine Brochure (R-1820), 1939 (Members Section)
05-11-2020 - Wright Cyclone Powered Aircraft, 1937 (Members Section)
05-11-2020 - Wright Whirlwind and Cyclone Airline Service, 1938 (Members Section)
05-11-2020 - Wright Cyclone (R-1820-F) Serial Numbers, 1935 (Members Section)
05-11-2020 - Wright Cyclone C9GC Serial Numbers, 1953 (Members Section)
05-11-2020 - Wright Cyclone 9HE Serial Numbers, 1949 (Members Section)
05-11-2020 - Wright Cyclone R-1750 Serial Numbers, 1931 (Members Section)
05-08-2020 - Pratt & Whitney Hornet B Description
05-06-2020 - Pratt & Whitney Hornet A, C, D, E Description
04-24-2020 - Pratt & Whitney Twin Wasp Description
04-20-2020 - Pratt & Whitney Twin Wasp Junior Description
04-15-2020 - Pratt & Whitney Wasp Description
04-13-2020 - Pratt & Whitney Wasp Junior Description
04-11-2020 - Italian Aero Industry, c 1934 (Members Section)
04-11-2020 - Italian Regia Aeronautica, c 1934 (Members Section)
04-11-2020 - Isotta Fraschini Factory, c 1934 (Members Section)
04-11-2020 - Piaggio Factory, c 1934 (Members Section)
04-11-2020 - Alfa Romeo Factory, c 1934 (Members Section)
04-11-2020 - Fiat Factory, c 1934 (Members Section)
04-08-2020 - Commparing WWII Soviet and U.S. Radials
03-23-2020 - Gnome 80hp Carburetor Animation, by Sergio Pasquali
03-04-2020 - Italian Aero Industry, c 1933 (Members Section)
03-04-2020 - Issota Fraschini Factory, c 1933 (Members Section)
03-04-2020 - Alfa Romeo Factory, c 1933 (Members Section)
03-04-2020 - Piaggio Aero Engine Factory, c 1933 (Members Section)
03-04-2020 - Italian Experimental Aircraft and Engine Development, c 1933 (Members Section)
03-03-2020 - Issota Fraschini Engines, c 1931 (Members Section)
03-03-2020 - Fiat Aero Engine Factory, c 1931 (Members Section)
03-03-2020 - Italian Experimental Aero Engines, c 1932 (Members Section)
03-03-2020 - Alfa Romeo Engines, c 1932 (Members Section)
03-03-2020 - Issota Fraschini Engines, c 1932 (Members Section)
03-03-2020 - Italian Regia Aeronautica Visit, c 1932 (Members Section)
03-01-2020 - AEHS Members 2020 Newsletter #1
02-28-2020 - Italian Aero Industry, c 1931 (Members Section)
02-28-2020 - Italian Experimental Aero Engines, c 1931 (Members Section)
02-25-2020 - Wright Supercharger Principles (Members Section)
02-25-2020 - Wright Engine Specification Preparation (Members Section)
02-09-2020 - Reno 2019
02-05-2020 - Union Aircraft Engine Installation, Operation and Care (Members Section)
02-05-2020 - Le Rhone 80 hp Instructions (Members Section)
02-05-2020 - Hall-Scott A-7a Care and Operation (Members Section)
02-05-2020 - Guiberson Diesel Engine Notes (Members Section)
02-04-2020 - Hispano-Suiza 650 CV Types 12 Nb, 12 Nbr Description (Members Section)
02-04-2020 - Hispano-Suiza Aviation Engine Installation (Members Section)
01-30-2020 - Hispano-Suiza 650 CV Type 12Nbr Specification (Members Section)
01-30-2020 - Hispano-Suiza 650 CV Type 12Nbr Illustrated Parts Catalog (see also 650 CV Type 12Nb) (Members Section)
01-30-2020 - Hispano-Suiza 650 CV Type 12Nb Illustrated Parts Catalog (Members Section)
01-30-2020 - Hamilton Standard 43E60, 34E60 Propeller Assembly, Installation (Members Section)
01-30-2020 - D.R.P. (Pobjoy) Aurora 150hp Aircraft Engine (Members Section)
01-24-2020 - Continental W670 Runner Gallery
01-24-2020 - Continental Radials
01-22-2020 - Rolls-Royce Merlin Model Differences and Timing (Members Section)
01-21-2020 - Fiat AS8 Propeller Reduction Gear Animation
01-21-2020 - Junkers Jumo 213 Valve Gear Drive Animation
01-13-2020 - Pratt & Whitney R-1340 3-D Printed Model by Stephen Stanley
01-01-2020 - Napier Lion History
12-14-2019 - A.B.C. Hornet Engine Brochure (Members Section)
12-14-2019 - American Airlines Douglas DC-7 Introduction and Description (Members Section)
12-14-2019 - A.B.C. Scorpion Engine Brochure (Members Section)
12-14-2019 - A.B.C. Scorpion Engine Maintenance and Running Instructions (Members Section)
12-14-2019 - Benz B.4 200 ps Engine Manual (Members Section)
12-14-2019 - Claudel-Hobson Aircraft Carburetters (Members Section)
12-14-2019 - Claudel-Hobson Aircraft Carburetters and Automatic Engine Controls (Members Section)
12-14-2019 - Claudel-Hobson H.C. 8 Carburettor Instructions (Members Section)
12-14-2019 - Claudel-Hobson Carburetters Catalog (Members Section)
12-08-2019 - AEHS Members 2019 Newsletter #4
12-07-2019 - The Hamilton Standard Superhydromatic Propeller, additional material
12-04-2019 - Liberty 12 Crankcase and Engine CAD Renderings
12-04-2019 - Vic Bentley’s Nelson H-59 Restoration
12-03-2019 - Book Review: Westinghouse Aviation Gas Turbine Designs & Studies
12-01-2019 - The Mathis 42-Cylinder Engine
11-30-2019 - McCulloch XO-90-2 Target Drone Engine Qualification Test
11-30-2019 - McCulloch XO-50-2 Target Drone Engine Calibration
11-30-2019 - McCulloch YO-100-4 Calibration and Qualification for Rotorcycle Use
11-30-2019 - McCulloch PN 10609B Starter Tests
11-30-2019 - Kiekhaefer V-105-2 Calibration
11-30-2019 - Kiekhaefer O-45-35 Starting Tests
11-30-2019 - Kiekhaefer KB7ATS Experimental Target Drone Engine Performance and Endurance Tests
11-30-2019 - Kiekhaefer Mercury KB 3-1/2-ST Starter Performance and Endurance Tests
11-27-2019 - Waste Heat Utilization in High Output Aircraft Piston Engines
11-25-2019 - General Dynamics F-16 Hydrazine (H70) Manual (Members Section)
11-20-2019 - Angle’s Engines (Aircat, LeBlond, Rearwin, Ken-Royce, Velie, Lambert and Angle A-1)
11-08-2019 - Identifying Allison V-3420-A8R, AEC Serial Number 173 (2.0 MB PDF)
10-18-2019 - Wright Installation (Members Section)
Wright Installation Manual, 1939: Section 1 – Front Matter, Table of Contents
Wright Installation Manual, 1939: Section 1 Chapter 1 – Engine Mounts
Wright Installation Manual, 1939: Section 1 Chapter 2 – Cowling and Nacelles
Wright Installation Manual, 1939: Section 1 Chapter 3 – Fuel System
Wright Installation Manual, 1939: Section 1 Chapter 4 – Lubrication System
Wright Installation Manual, 1939: Section 1 Chapter 5 – Induction System
Wright Installation Manual, 1939: Section 1 Chapter 6 – Exhaust System
Wright Installation Manual, 1939: Section 1 Chapter 7 – Engine Controls
Wright Installation Manual, 1939: Section 1 Chapter 8 – Ignition System
Wright Installation Manual, 1939: Section 1 Chapter 9 – Accessories
Wright Installation Manual, 1939: Section 2 – Installation Inspection and Test
Wright Installation Manual, 1939: Section 2 Chapter 1 – Installation Inspection
Wright Installation Manual, 1939: Section 2 Chapter 2 – Test Specification
Wright Installation Manual, 1939: Section 2 Chapter 3 – Vibration
Wright Installation Manual, 1939: Section 2 Chapter 4 – Appendix (Accessories, Tables)
10-11-2019 - Wright Installation Manual, 1937 (Members Section)
10-10-2019 - Burlat Moteurs Rotatifs (Members Section)
10-08-2019 - Aeroplane and Motor Car Engine Weight Comparison (Members Section)
10-08-2019 - Aero Motors, Present and Future (Members Section)
09-28-2019 - Liberty 12 Crankshaft, Piston, Connecting Rods, Camshaft, Camshaft Drive and Water Pump Drive CAD Renderings
09-25-2019 - Liberty 12 Intake Manifold CAD Renderings
09-24-2019 - Allison Single and Double V-3420-B Installation Studies
09-15-2019 - Allison V-3420-B Images
09-12-2019 - Allison V-3420-A Images
09-05-2019 - Liberty 12 Fuel Pump CAD Renderings
09-05-2019 - Liberty 12A CAD Rendering by Stephen Stanley
09-05-2019 - Pratt & Whitney R-1340 CAD Rendering by Stephen Stanley
09-03-2019 - AEHS Members 2019 Newsletter #3
08-23-2019 - Liberty 12 Cylinder and Crankcase CAD Renderings
08-20-2019 - The Last Flying Curtiss Turboelectric Propeller - by Tom Fey
08-17-2019 - U.S. Military Aircraft Manual Index
08-16-2019 - U.S. Military Engine Manual Index
08-14-2019 - Liberty 12 CAD Renderings
08-14-2019 - Allison V-1710-G Images
08-13-2019 - Allison V-1710-F Images
08-12-2019 - Allison V-1710-E Images
08-11-2019 - Allison V-1710-D Images
08-10-2019 - Allison V-1710-C Images
08-09-2019 - Allison V-1710-B Images
08-08-2019 - Allison GV-1710-A Images
08-07-2019 - Allison Piston Engine Specifications
07-14-2019 - Siddeley Puma 240 hp Technical Notes (Members Section)
07-14-2019 - R.A.F. 3a 200 hp Technical Notes (Members Section)
07-14-2019 - R.A.F. 1a 90 hp Technical Notes (Members Section)
07-14-2019 - Gnome 100 hp Monosoupape Technical Notes (Members Section)
07-14-2019 - Le Rhone 80 hp Technical Notes (Members Section)
07-14-2019 - Gnome 80 hp Technical Notes (Members Section)
07-14-2019 - Clerget 110 hp Technical Notes (Members Section)
07-14-2019 - Beardmore 120 hp Technical Notes (Members Section)
07-01-2019 - Tom Fey’s Righter O-15-3 Restoration
07-01-2019 - Pratt & Whitney Gasoline and Engine Specifications (Members Section)
Updated to include:
Specification No. 8116, Double Wasp CA5 (R-2800)
Specification No. 8117, Double Wasp CA17 (R-2800)
Specification No. 8125, Double Wasp CA19 (R-2800)
Specification No. 7029, Wasp Major VSB11-G (R-4360)
Specification No. 7052, Wasp Major TSB3-G (R-4360)
06-25-2019 - Examinations of Cadet Officer Frank Whittle’s 1928 Paper Dispute that it is the First Mention of Jet Propulsion
06-18-2019 - Book Review: Studebaker’s XH-9350
06-18-2019 - Book Review: America’s Round-Engine Airliners
06-07-2019 - Pratt & Whitney Gasoline and Engine Specifications (Members Section)
Updated to include:
Specification No. 2039, Wasp Jr B4 (R-985)
Specification No. 2040, Wasp Jr B5 (R-985)
Specification No. 1052, Wasp S3H (R-1340)
Specification No. 1053, Wasp S3H1-G (R-1340)
Specification No. 1055, Wasp S3H2 (R-1340)
Specification No. 1056, Wasp S1H1 (R-1340)
Specification No. 1058, Wasp S1H1-G (R-1340)
Specification No. 5054, Twin Wasp S1C3-G (R-2000)
Specification No. 9027, Twin Wasp 2SD13-G (R-2000)
Specification No. 9030, Twin Wasp E5 (R-2000)
Specification No. 6051, Twin Wasp E1 (R-2180)
06-04-2019 - AEHS Members 2019 Newsletter #2
05-12-2019 - AN-9506. Specification, Ends, Aircraft Engine Nose and Propeller Shaft (Members Section)
05-10-2019 - Continental A-40 50-hr Endurance Test (Members Section)
05-10-2019 - Pratt & Whitney Installation: Wasp Jr (R-985) B4, B5 (Members Section)
05-10-2019 - Pratt & Whitney Installation: Wasp (R-1340) S3H1, S3H1-G, S3H2 (Members Section)
05-10-2019 - Pratt & Whitney Installation: Twin Wasp (R-1830) S1C3-G (Members Section)
05-10-2019 - Pratt & Whitney Installation: Twin Wasp (R-2000) 2SD13-G, D2 (Members Section)
05-10-2019 - Pratt & Whitney Installation: Double Wasp (R-2800) CA Series (Members Section)
05-10-2019 - Pratt & Whitney Installation: Double Wasp (R-2800) CB Series (Members Section)
05-10-2019 - Pratt & Whitney Installation: Wasp Major (R-4360) B Series (Members Section)
05-07-2019 - Pratt & Whitney Installation: Lubrication System (Members Section)
05-07-2019 - Pratt & Whitney Installation: Fuel System (Members Section)
05-07-2019 - Pratt & Whitney Installation: Electrical System (Members Section)
05-07-2019 - Pratt & Whitney Installation: Inspection (Members Section)
05-07-2019 - Pratt & Whitney Installation: Instrumentation, Operation, Test (Members Section)
05-07-2019 - Pratt & Whitney Installation: Power Analysis and Performance (Members Section)
05-07-2019 - Pratt & Whitney Installation: References (Members Section)
04-09-2019 - Lycoming Lubricating Oil Specification 301-C (Members Section)
04-09-2019 - Lycoming Aviation Gasoline Specification 201-D (Members Section)
04-09-2019 - Lycoming R-680-E3A Model Specification 1047-C (Members Section)
04-09-2019 - Lycoming O-435, O-435-A Model Specification 1065-A (Members Section)
04-09-2019 - Lycoming O-350, O-350-A Model Specification 1063-A (Members Section)
04-09-2019 - Lycoming O-290, O-290-A Model Specification 1061-A (Members Section)
04-09-2019 - Lycoming O-235, O-235-A Model Specification 1059-B (Members Section)
04-09-2019 - Lycoming GO-145-C3, -C4 Model Specification 1046-C (Members Section)
04-09-2019 - Lycoming GO-145-C2 Model Specification 1045-C (Members Section)
04-09-2019 - Lycoming GO-145-C1 Model Specification 1044-B (Members Section)
04-06-2019 - Lycoming O-145-C3, -C4 Model Specification 1029-C (Members Section)
04-06-2019 - Lycoming O-145-C2 Model Specification 1028-C (Members Section)
04-06-2019 - Lycoming O-145-C1 Model Specification 1027-B (Members Section)
04-06-2019 - Lycoming O-145-B3, -B4 Model Specification 1036-B (Members Section)
04-06-2019 - Lycoming O-145-B2 Model Specification 1035-B (Members Section)
04-06-2019 - Lycoming O-145-B1 Spec No. 1034-A (Members Section)
04-06-2019 - Lycoming O-145-A3, -A4 Spec No. 1020-D (Members Section)
04-06-2019 - Lycoming O-145-A2 Spec No. 1026-D (Members Section)
04-06-2019 - Lycoming O-145-A1 Model Specification 1029-D (Members Section)
04-05-2019 - Specified and Alternate Grade Fuels for Aircraft and Engine Combinations (Members Section)
04-05-2019 - Alternate Grade Fuels in Aircraft Engines (Members Section)
04-03-2019 - Harold Caminez, Engine Designer
03-29-2019 - Book Review: Early Westinghouse Axial Turbojets, by Paul J. Christiansen
03-27-2019 - Twin Wasp D (R-2000) Model Differences (2.4M PDF). Courtesy of Wings Over the Rockies Museum and James Tegart
03-26-2019 - Ford-Built R-4360s
03-15-2019 - Allison V-3420 and DV-6840 Engine Arrangements (Members Section)
03-08-2019 - Alfaro Engine Technical Development Report 4 (Members Section)
03-08-2019 - Alfaro Engine Technical Development Report 19 (Members Section)
03-08-2019 - Alexander Motor Prize Competition, 1911 (Members Section)
03-08-2019 - British Advisory Committee for Aeronautics Interim Report, 1910 - 1911 (Members Section)
03-08-2019 - Aero-Engine Efficiencies, by A.H. Gibson (Members Section)
03-01-2019 - 1/8 Scale Fiat AS.6, by John May
03-01-2019 - AEHS Members 2019 Newsletter #1
02-22-2019 - Reno 2018 (High-Resolution Images in the Members Section)
02-10-2019 - Alistair Wright’s time in the Rolls-Royce Derby Special Projects Office; the Rolls-Royce Conway
02-05-2019 - Sperry Engine Analyzer with with Operating Instructions for Pratt & Whitney R-2800 (Members Section)
02-04-2019 - The S.U. Petrol Injection Pump (Members Section)
02-04-2019 - Napier Sabre VA Pilot’s Notes (Members Section)
02-04-2019 - Royal Aircraft Establishment Work on Air-Cooled Cylinders (Members Section)
02-04-2019 - Bristol Sleeve Valve Aero Engine Brochure (Members Section)
02-04-2019 - British High-Speed Aircraft for the 1931 Schneider Trophy Contest (Members Section)
02-04-2019 - British High-Speed Aircraft for the 1927 Schneider Trophy Contest (Members Section)
02-04-2019 - Napier Sabre IIA, IIB Pilot’s Notes (Members Section)
02-04-2019 - The S.U. Injection Pump (Members Section)
02-03-2019 - Oldsmobile and the Rolls-Royce Merlin Engine (Members Section)
02-03-2019 - Rolls-Royce Merlin Pocket Folio of Dismantling, Erecting and Repair Notes (Members Section)
02-03-2019 - Rolls-Royce Merlin Folio of Design, Installation, Running and Maintenance Notes (Members Section)
02-03-2019 - Rolls-Royce Merlin II, III, IV Pilot’s Notes (Members Section)
02-03-2019 - The Rolls-Royce Merlin 500 as Fitted to York Aircraft (Members Section)
02-03-2019 - Bristol Mercury XV Pilot’s Notes (Members Section)
02-03-2019 - Junkers Jumo 211B/D, G/H Brochure (Members Section)
02-03-2019 - Junkers Jumo 211B, D Brochure (Members Section)
02-03-2019 - Junkers Jumo 211A Brochure (Members Section)
02-03-2019 - Junkers Jumo 205 Brochure (Members Section)
01-18-2019 - Radioplane US AAF OQ-3, Navy TDD-2 Radio Controlled Airplane Target Instructions and Parts Catalog (Members Section)
01-18-2019 - Radioplane US AAF OQ-14, Navy TDD-3 Radio Controlled Airplane Target Instructions and Parts Catalog (Members Section)
01-18-2019 - McCulloch O-100-1 Engine Overhaul Manual (Members Section)
01-18-2019 - Righter 2-GS-17 Series 41 and 42 Engine Specification (Members Section)
01-18-2019 - Righter O-15-1 Engine Operation and Maintenance Instructions (Members Section)
01-01-2019 - Bristol Centaurus V, VII, IX, XI Operating Instructions (Members Section)
01-01-2019 - Tampier Rotary Engine Carburetor Carburetor Blocktube Parts Catalog (Members Section)
01-01-2019 - Tampier Rotary Engine Carburetor Carburetor Blocktube Description (Members Section)
01-01-2019 - Bristol Sleeve-Valve Aero Engine Brochure (Members Section)
01-01-2019 - Bristol Sleeve-Valve Engine Reference Data (Members Section)
01-01-2019 - Bristol Orpheus Description (Members Section)
01-01-2019 - Armstrong Siddeley Aircraft Engines (Members Section)
01-01-2019 - Bristol Siddeley Double Mamba Mk.112 Performance and Installation Data (Members Section)
01-01-2019 - Bristol Theseus, Proteus Description, Performance (Members Section)
11-13-2018 - Studebaker XH-9350 Aircraft Engine
11-04-2018 - A German Assessment of the Allison V-1710 Aircraft Engine
10-01-2018 - Pratt & Whitney ‘CA’ Double Wasp Inside Information (Members Section)
09-01-2018 - Packard-Built V-1650, Rolls-Royce Merlin XXVII Engineering Information
08-09-2018 - Des Hélices Aériennes - A 1909 Propeller Design Text
07-09-2018 - WWI-Era Engine Reports and Power Curves, 1917 (Members Section)
07-07-2018 - Air Board Engine Book (Members Section)
07-04-2018 - WWI Engine Power Curves, 1917 (Members Section)
07-04-2018 - Jacobs L-4, L-5, L-6 Series Specifications, Data, Installation Drawings (Members Section)
05-24-2018 - Propeller Shaft Dimensions
05-12-2018 - More Jacobs Aircraft Engine History
05-01-2018 - Request for Data R40-A Engine Evaluation (P&W X-1800, Wright R-2160, Continental XH-2860, Allison V-3420 competition.)
05-01-2018 - Junkers Jumo 004 Technical Description
01-31-2018 - Pratt & Whitney R-4360 Valve Train Development
01-03-2018 - Evaporative Cooling, Part 1: Through WWII
01-03-2018 - Evaporative Cooling, Part 2: Post WWII
12-01-2017 - Wright TC18EA Cutaways and Schematics (Members Section)
12-01-2017 - Wright Turbo Compound Power Recovery Turbine Removal and Disassembly (Members Section)
11-24-2017 - Wright Cyclone Power Measurement (Members Section)
11-23-2017 - Wright Student Notebook: 2. Power Curves (Members Section)
11-23-2017 - Wright Student Notebook: 7. The Wright Torque Indicator (Members Section)
11-09-2017 - Propeller and Governor Application List (Members Section)
09-22-2017 - The Evolution of Crankshaft Design in High Output In-Line Aircraft Piston Engines --- by Robert J. Raymond
07-19-2017 - Book Review: Hucknall –the Rolls-Royce Flight Test Establishment, by David Birch
06-19-2017 - WWII Gunnery Target Engine Technical Analysis:
Part 1. Background and General Configuration
Part 2. The Righter 2-GS-17 (O-15-1) in Detail
Part 3. The Righter O-15-3 Engine
Part 4. Performance and Efficiency Comparison between O-15-1 and O-15-3 Engines
Part 5. The O-45-1 and Kiekhaefer O-45-35
Part 6. Performance and Efficiency Comparison between O-45-1 and O-45-35 Engines
Part 7. Conclusion
06-07-2017 - Hamilton Standard Propellers (Members Section)
04-19-2017 - U.S. Reciprocating Aircraft Engine General Specifications and Testing (AN-9500D, AN-9502D) (Members Section)
06-21-2016 - Allison V-1710 and Rolls-Royce Merlin Torsional Vibration Characteristics (1.3M PDF) --- by Robert J. Raymond and Daniel D. Whitney
12-21-2015 - Engine Approved Type Certificate List, Nos. 1 ~ 218, 1928 through 1939 (4.5M PDF)
12-12-2015 - U.S. Navy Aeronautical Engine Laboratory Report Index, by Paul Christiansen
06-02-2014 - U.S. National Archives I Navy Bureau of Aeronautics Index
05-13-2014 - An Analysis of the Contra-Rotating Propellers on the 1943 Radioplane OQ-2 Gunnery Target Drone, by Tom Fey
03-19-2014 - Ford's Aircraft Engine (Members Section)
08-17-2013 - Aircraft Carburetors and Fuel Systems
02-18-2013 - The Packard Variable Speed Drive, by Jerry Wells
09-10-2012 - AEHS Document Collection Catalog (Members Version with Access to Numerous Engine Accessory Manuals)
09-05-2012 - Triptane --- the Super Fuel (Members Section)
11-13-2011 - Napier Sabre Overhaul (Members Section) Public Preview of Napier Sabre Service and Overhaul Tools
10-09-2011 - Correct Designations for Jet, Turboprop, Pulse Jet, Ram Jet and Rocket Engines (No dash between J, T, PJ, RJ, R and number after 15 May 1945)
09-09-2011 - Installation Drawings for 25 Aircraft Engines from 1924
07-23-2011 - Characteristics of Fuels
07-21-2011 - BMW 801 D-2 Kommandogerät (Control System) (Members Section)
07-01-2011 - Merlin vs Allison: Aircraft Engine Performance Analysis at Rolls-Royce, ca 1940 --- by Robert J. Raymond (web version)
05-28-2011 - Merlin vs Allison: Aircraft Engine Performance Analysis at Rolls-Royce, ca 1940 --- by Robert J. Raymond
04-30-2010 - A-12 / SR-71 Propulsion, A Photo Essay by Richard E. Loftis (Members Section)
04-24-2010 - Manufacturing the Napier Sabre (Members Section)
04-14-2010 - Manufacturing the Packard-Built Merlin (Members Section)
04-11-2010 - Manufacturing the Allison V-1710 (Members Section)
02-21-2010 - Manufacturing the Rolls-Royce Merlin (Members Section)
11-15-2009 - The Westinghouse Aviation Gas Turbine Division 1950-1960
08-22-2009 - How Many Valves?, by Kevin Cameron (History of Number of Valves per Cylinder (Members Section)
08-22-2009 - The Engines of Brodhead, a Photo Essay by Richard E. Loftis (Members Section)
05-21-2008 - Indexes for over 550,000 Air Force Documents
02-06-2006 - Index to Navy ADI(k) Microfilms of German Documents
10-28-2004 - USAF Case History Files Index
... Plus much, much more that is older than two years.
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