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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 23 Years (2001 – 2024) 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.
10-18-2024 - CAD Images by Stephen Stanley: Curtiss R-600 Challenger; Velie M-5
10-07-2024 - 1 Jan 1945 — Lycoming XR-7755 Engine Mount Studies
10-07-2024 - Lycoming XR-7755-1 Engine Specification No. 2020-C; Installation Drawing No. 80005;
Power Curve No. 3985
10-02-2024 - Lycoming XR-7755: 19 Apr 1948 – First 50-hr Test at 5,000 hp
10-02-2024 - Lycoming XR-7733 Specifications, Installation Drawings and Power Curves:
5 Jul 1943 — Lycoming X-6 Engine Specification No. 2020
30 Jun 1944 — Lycoming X-7 Engine Preliminary Specification;
Installation Drawing No. 80001
4 Jun 1945 — Lycoming XR-7755-3 Engine Specification No. 2031-A;
Installation Drawing No. 80004;
Power Curve No. 5714
29 Nov 1945 — Lycoming XR-7755-5 Engine Specification No. 2030-B; Installation Drawing No. 80006
7 Feb 1955 — Military Specification MIL-E-25109, Engines, Aircraft, Reciprocation, General Specification For (supersedes AN-9500d dated 23 Sep 1948)
10-01-2024 - Wright P-1 CAD Model: Crankcase Rear Section, Oil System, by John Riend
10-01-2024 - The Lighter Than Air Era, by Sergio Pasquali (Italian Language)
09-27-2024 - Lycoming XR-7755 Article Update
09-07-2024 - Lycoming XR-7755 Article Update
09-05-2024 - Lycoming XR-7755 Article Update
09-04-2024 - Lycoming XR-7755 Article Update
09-03-2024 - Lycoming XR-7755 Article Update
09-01-2024 - AEHS Members 2024 Newsletter #3
08-31-2024 - Lycoming XR-7755 Article Update
08-30-2024 - Lycoming XR-7755 Article Update
08-27-2024 - Lycoming XR-7755 Article Update
08-24-2024 - Lycoming XR-7755 Article Update
08-20-2024 - Lycoming XR-7755 Article Update
08-09-2024 - Lycoming XR-7755 Article Update
08-07-2024 - Lycoming XR-7755 Article Update
08-03-2024 - Lycoming XR-7755 Article Update
08-01-2024 - The Lycoming XR-7755
07-11-2024 - The McKinnon Jet Goose (updated)
07-10-2024 - Curtiss-Wright Cyclone 22 (Military XR-4090)
07-01-2024 - Allison V-3420-9 Type Test
06-17-2024 - Stromberg NA-S4 Carburetor Development—Part 4: Testing on the Lawrance J-1
06-16-2024 - Stromberg NA-S4 Carburetor Development—Part 3: The Fixes
06-14-2024 - Programs for all AEHS Conventions Added (Members' Section)
06-07-2024 - YouTube video of Tom Fey’s OS FS-20 Running
06-06-2024 - Stromberg NA-S4 Carburetor Development—Part 2: Testing on the Lawrance L-4
06-05-2024 - Stromberg NA-S4 Carburetor Development—Part 1: Description
06-04-2024 - Wright J-5A 100-hour Full-Throttle Endurance Test
06-03-2024 - Wright J-4A Endurance Tests
06-02-2024 - Wright J-3 50-hour Test
06-01-2024 - AEHS Members 2024 Newsletter #2
05-22-2024 - Curtiss V-1400 R3C-2 Schneider Cup Racing Engine
05-15-2024 - Instructing in the T-6
05-14-2024 - The McKinnon Jet Goose
05-12-2024 - WWII Bomber Operations from a British Perspective
05-01-2024 - Wright P-1 CAD Model, Complete Assembly, Front Section, by John Riend
04-19-2024 - Wright P-1 CAD Model, Valve Train, by John Riend
04-16-2024 - Ad Astra per Aspera (To the Stars Through Hardships), by Terry Spath
04-12-2024 - U.S. Military Engine Development, updated with Lycoming XR-7755 and Studebaker XH-9350 data.
04-11-2024 - Wright P-1 CAD Model, Starter, by John Riend
04-09-2024 - U.S. Military Experimental Engine Development, 1935 – 1947
04-06-2024 - Tom Fey’s OS FS-20 Restoration
04-06-2024 - Wright P-1 CAD Model, Gear Trains, by John Riend
03-30-2024 - Wright P-1 CAD Model, Partial Assembly, by John Riend
03-27-2024 - Allison V-3420-A8R, AEC Serial Number 173 Restored
03-18-2024 - Wright P-1 CAD Model, Cylinder, by John Riend
03-07-2024 - Wright P-1 CAD Model, new castings added, by John Riend
03-05-2024 - NMUSAF Rocket Tour Docent Training, by Jeff Robeson (2.0M PDF)
03-04-2024 - NMUSAF Piston Engine Tour Docent Training, by Jeff Robeson (2.8M PDF)
03-01-2024 - Book Review: Building Engines for War by Edward M. Young
03-01-2024 - Wright P-1 CAD Model, by John Riend
03-01-2024 - AEHS Members 2024 Newsletter #1
02-23-2024 - The USAAF Compound Engine Project
02-13-2023 - Bonus Reno 2023 Gallery (Members Section)
02-10-2023 - Reno 2023
02-06-2024 - Wright R-2 Drawings (Members Section)
02-05-2024 - Additions to Wright P-2 CAD Model, by John Riend
02-01-2024 - It Sounded Like a Good Idea at the Time: Canadian Car and Foundry HI-4800 3,000 hp Diesel Oil Engine, Updated (Members Section)
01-30-2024 - A Wolseley Motor That "Never Was" – The Hispano-Suiza 'Viper' W-12 Aero-Engine, by Jerry Wells
01-28-2024 - New Features and Videos
01-28-2024 - Wright P-2 CAD Model, by John Riend
01-27-2024 - It Sounded Like a Good Idea at the Time: Canadian Car and Foundry HI-4800 3,000 hp Diesel Oil Engine (Members Section)
01-18-2024 - Book Review: The History of North American Small Gas Turbine Aircraft Engines
01-09-2024 - Book Review: Rolls-Royce and the Mustang
01-07-2024 - It Sounded Like a Good Idea at the Time: Variable Discharge Turbosupercharger Engine (VDT) (Members Section)
01-05-2024 - Additions to Wright J-5C CAD Model by John Riend
01-01-2024 - Kinner Aircraft Engines
01-01-2024 - Additions to Wright J-5C CAD Model by John Riend
12-16-2023 - It Sounded Like a Good Idea at the Time: Xylidine (Members Section)
12-14-2023 - It Sounded Like a Good Idea at the Time: Tetraethyl Lead (Members Section)
12-12-2023 - It Sounded Like a Good Idea at the Time: Spark Plugs (Members Section)
12-10-2023 - Additions to Wright J-5C CAD Model by John Riend
12-10-2023 - It Sounded Like a Good Idea at the Time: Packard Gas Turbines (Members Section)
12-08-2023 - It Sounded Like a Good Idea at the Time: Hard Alloy Propeller Blades (Members Section)
12-06-2023 - It Sounded Like a Good Idea at the Time: Bulova Fuel Injection Case History (Members Section)
12-05-2023 - It Sounded Like a Good Idea at the Time: Berylium Case History (Members Section)
12-04-2023 - General Electric GE4 Afterburner Test Rig
12-04-2023 - Turbosuperchargers for Experimental USSAC Aircraft, circa 1942 (Updated)
12-02-2023 - Wright J-5C CAD Model by John Riend
12-01-2023 - AEHS Members 2023 Newsletter #4
11-25 2023 - Another Water Injection Servicing Error
11-14-2023 - S.D. Stanley CAD Models: Curtiss Chieftain
11-12-2023 - Turbosuperchargers for Experimental USSAC Aircraft, circa 1942
11-11-2023 - Aircraft Engine Development circa 1923
11-06-2023 - The de Havilland H-1 as built in the U.S. by Allis-Chalmers
11-05-2023 - The U.S. Air Force Nuclear Aircraft Propulsion Program
11-05-2023 - Book Review: A Span of Wings, an autobiography by Sir Archibald Russell
10-31-2023 - Boeing Gas Turbines
10-23-2023 - The Northrop Turbodyne (XT37) Turboprop
10-06-2023 - Maintaining the Aeroproducts Model 606 Propellers, by Tony Vasko
09-09-2023 - The Aeroproducts Models A6441FN-606 and A6441FN-606A Propellers
09-08-2023 - Mysteries of the Convair B-36 Propeller: Part 1
09-03-2023 - Air-Cooled Engines: Post WWI Royal Aircraft Establishment Work (Members Section)
09-03-2023 - Allison Background, Products, Facilities (Members Section)
09-03-2023 - Hibner Rotary Gas Engine (Members Section)
09-03-2023 - Isotta Fraschini Gamma RC.35 Air-Cooled V-12 (Members Section)
09-03-2023 - Kemp Air-Cooled Aeroplane Motors (Members Section)
09-03-2023 - Rebuilding Curtiss OX Motors to Obtain Maximum Power and Reliability (Members Section)
09-03-2023 - Meccanica Verghera Agusta Aircraft Engines (Members Section)
09-03-2023 - Tampier L'Alimentation des Moteurs d'Aeroplanes 1913 (Blocktube Carburetor) (Members Section)
09-03-2023 - Tampier L'Alimentation des Moteurs d'Aeroplanes 1914 (Blocktube Carburetor) (Members Section)
09-03-2023 - Tampier L'Alimentation des Moteurs d'Aeroplanes 1916 (Blocktube Carburetor Repair Parts) (Members Section)
09-03-2023 - Wright Propeller-Speed Cooling Fan Service Instructions (Members Section)
09-01-2023 - The Lockheed L-188 Electra, Allison 501 Engine and Aeroproducts Propeller
09-01-2023 - AEHS Members 2023 Newsletter #3
08-28-2023 - General Electric J47 Images
08-28-2023 - Early Engines: Wright Aeronautical Corporation
08-20-2023 - Restoring an Aeroproducts Hollow Steel Turbopropeller Blade
08-14-2023 - Early Engines: Winterthur
08-14-2023 - Early Engines: Wolseley
08-14-2023 - Early Engines: Wright Brothers
08-08-2023 - Early Engines: Western
08-08-2023 - Early Engines: Werner & Pfleiderer
08-08-2023 - Early Engines: Wells-Adams
08-07-2023 - Wings of History Air Museum engines added to AEHS List of Engines in Museums
08-06-2023 - Early Engines: Warner
07-24-2023 - Early Engines: Walter
07-10-2023 - Early Engines: Willis-DePalma
06-29-2023 - Early Engines: Vivinus
06-29-2023 - Early Engines: Viking
06-29-2023 - Early Engines: Universal Test Engine
06-27-2023 - Early Engines: Union
06-26-2023 - Early Engines: Trebert
06-19-2023 - Early Engines: Tosi
06-17-2023 - Wright L-320 Gipsy Engine Assembly CAD Models
06-14-2023 - Early Engines: Tips
06-08-2023 - Wright L-320 Gipsy Valve Train Assembly CAD Models
06-06-2023 - Wright L-320 Gipsy Lower Crankcase Studding Assembly CAD Models
06-05-2023 - Wright L-320 Gipsy Upper Crankcase Studding Assembly CAD Models
06-04-2023 - Early Engines: Thomas
06-01-2023 - AEHS Members 2023 Newsletter #2
05-29-2023 - Early Engines: Sunbeam
05-24-2023 - Wright L-320 Gipsy Crankcase, Upper CAD Models
05-19-2023 - Wright L-320 Gipsy Manifolds, Oil Pump, Prop Hub CAD Models
05-17-2023 - Wright L-320 Gipsy Cylinder and Head CAD Models
05-15-2023 - ID Unknown: Conner Radial
05-14 2023 - Accidents Due to Water Injection Servicing Errors
05-14-2023 - Wright L-320 Gipsy CAD Model
05-10-2023 - Early Engines: Sturtevant
05-08-2023 - Early Engines: S.P.A.
05-05-2023 - Early Engines: Smith
05-02-2023 - Early Engines: Siemens-Halske
04-30-2023 - Early Engines: Siddeley-Deasy
04-29-2023 - Early Engines: S.H.K.
04-28-2023 - Early Engines: Sauda
04-27-2023 - Early Engines: Salmson
04-23-2023 - Wright L-320 Gipsy Parts Catalog
04-13-2023 - Early Engines: Rolls-Royce
04-06-2023 - Early Engines: Roberts
04-06-2023 - Early Engines: Rheinische
04-04-2023 - Early Engines: R.E.P.
04-01-2023 - Early Engines: Renault
03-12-2023 - Early Engines: Renard
03-10-2023 - Some Notes on the Bristol Cherub and its Inner Works
03-07-2023 - Early Engines: Rausenberger
03-04-2023 - Early Engines: Rapp
03-01-2023 - AEHS Members 2023 Newsletter #1
02-20-2023 - Early Engines: R.A.F.
02-19-2023 - Technical Publication and Information Index, 1 Apr 1943 (Members' Section)
02-19-2023 - Technical Publication and Information Index, 1 Jun 1943 (Members' Section)
02-19-2023 - Technical Publication and Information Index, 1 Apr 1945 (Members' Section)
02-19-2023 - Technical Publication and Information Index Supplement, 14 Apr 1945 (Members' Section)
02-19-2023 - Technical Publication and Information Index Supplement, 1 May 1945 (Members' Section)
02-19-2023 - Technical Publication Alphabetical Index, 15 Jun 1945 (Members' Section)
02-19-2023 - Technical Publication and Information Index, 1 Oct 1946 (Members' Section)
02-19-2023 - Technical Orders Explanation, 1946 (Members' Section)
02-12-2023 - Curtiss R-600 Challenger CAD Model: PN C-10126 Cam Drive Geartrain
02-11-2023 - Allison V-1710-81, -87 Parts Catalog (Members' Section)
02-08-2023 - Early Engines: Pipe
02-08-2023 - Early Engines: Potez
02-08-2023 - Early Engines: Prini-Berthaud
02-08-2023 - Early Engines: Pratt & Whitney
02-06-2023 - Early Engines: New Irwin Engine Drawings
02-02-2023 - Early Engines: Peugeot
02-01-2023 - S.D. Stanley CAD Models: Hall-Scott A7A, Wright J-5
02-01-2023 - Curtiss Wright Turbo Compound Data Plate Sampling, by Carl Kuhns
02-01-2023 - Early Engines: Packard
02-01-2023 - Early Engines: Panhard
01-24-2023 - Early Engines: Oberursel
01-24-2023 - Early Engines: Oerlikon
01-24-2023 - Early Engines: Opel
01-24-2023 - Early Engines: Orlo
01-24-2023 - Early Engines: Otto
01-21-2023 - Book Review: Turbulent Journey
01-21-2023 - Early Engines: Novus
01-20-2023 - New Links
01-17-2023 - Curtiss R-600 Challenger CAD Model: PN C-10225EXP Cam Drive Geartrain
01-19-2023 - Early Engines: N.E.C.
01-17-2023 - Curtiss R-600 Challenger CAD Model: PN C-10225ABC Cam Drive Geartrain
01-17-2023 - Reno 2022
01-15-2023 - Early Engines: Napier
01-14-2023 - Early Engines: N.A.G.
01-09-2023 - Propeller Indexing
01-07-2023 - P & W R-4360 Engine Exploded Views (Members' Section)
01-07-2023 - Wright R-3350 Engine Exploded Views (Members' Section)
12-29-2022 - Manned U.S. Rocket Propulsion – Part 9.50: The Apollo Guidance Computer
12-09-2022 - Manned U.S. Rocket Propulsion – Part 9.46: Apollo Lunar Module Guidance and Control
12-07-2022 - F-1 Rocket Engine Combustion Instability Fix
12-01-2022 - Manned U.S. Rocket Propulsion – Part 9.21: Apollo Command Module Guidance and Control
12-01-2022 - AEHS Members 2022 Newsletter #4
11-27-2022 - Curtiss R-600 Challenger CAD Model: PN C-10225B and PN C-10225C Cam Gear Assemblies
11-25-2022 - Curtiss R-600 Challenger CAD Model: PN C-10225A Cam Gear Assembly
11-24-2022 - Curtiss R-600 Challenger CAD Model: PN C-10126 Cam Gear Assembly
11-22-2022 - Curtiss R-600 Challenger CAD Model: PN C-10839 Crankshaft
11-22-2022 - Curtiss R-600 Challenger CAD Model: PN C-10787 Crankshaft
11-20-2022 - Book Review: Allison Drawings: 1919 - 1943
11-20-2022 - Wright R-3350 Turbo Compound Power Recovery Turbine Fluid Couplings
11-15-2022 - Curtiss R-600 Challenger CAD Model: PN C-10369 Crankshaft
11-13-2022 - Curtiss R-600 Challenger CAD Model: PN C-10102 Crankshaft
11-07-2022 - Curtiss R-600 Challenger CAD Model: PN C-10608 Master Rods
11-04-2022 - Curtiss R-600 Challenger CAD Model: PN C-10785 Master Rods
11-03-2022 - Early Engines: Murray-Willat
11-03-2022 - Early Engines: Morehouse
11-03-2022 - Early Engines: Minerva
11-03-2022 - Early Engines: Miller
11-03-2022 - Early Engines: Michigan Aero
11-03-2022 - Early Engines: Michel
11-02-2022 - Distributors for the Rolls-Royce Heritage Trust, Allison Branch Liberty L-12A
11-02-2022 - Early Engines: Mercedes
10-31-2022 - Curtiss R-600 Challenger CAD Model: PN C-10039 Master Rods
10-21-2022 - Early Engines: Maybach
10-17-2022 - Early Engines: Maximotor
10-17-2022 - Early Engines: Manly
10-13-2022 - Early Engines: Liberty
09-30-2022 - Early Engines: Le Rhône
09-20-2022 - General Electric F110 Turbine Blade Details
09-20-2022 - Curtiss R-600 Challenger CAD Model: Lanchester Damper
09-19-2022 - Early Engines: Lorraine-Dietrich
09-19-2022 - Early Engines: Lawrance
09-03-2022 - Curtiss R-600 Challenger CAD Model: Final Production Oil Pump
09-07-2022 - Pratt & Whitney R-4360 C-Series Ignition System Map
09-07-2022 - Curtiss R-600 Challenger CAD Model: First Production Oil Pump
09-06-2022 - Curtiss R-600 Challenger CAD Model: Experimental Oil Pump
09-03-2022 - Curtiss R-600 Challenger CAD Model: Experimental Oil Cooler
09-01-2022 - Pobjoy Cascade II
09-01-2022 - AEHS Members 2022 Newsletter #3
08-29-2022 - P&W J58 Overview
08-18-2022 - Early Engines: New Irwin Engine Drawings
08-10-2022 - General Electric Jet Propulsion circa 1979 (Members Section)
08-09-2022 - General Electric Jet Propulsion circa 1983 (Members Section)
08-08-2022 - Early Engines: Körting
08-08-2022 - Early Engines: Knox
08-06-2022 - Early Engines: Kirkham
08-06-2022 - Early Engines: King
08-04-2022 - Early Engines: Kessler
08-04-2022 - Early Engines: Kemp
08-01-2022 - Early Engines: Junkers
07-21-2022 - Tom Fey’s Righter 4-O-34 Restoration Part 3
07-20-2022 - Tom Fey’s Righter 4-O-34 Restoration Part 2
07-19-2022 - Early Engines: Issoto-Fraschini
07-18-2022 - Early Engines: Isaacson
07-18-2022 - Early Engines: Irwin
07-13-2022 - Early Engines: Indian
07-11-2022 - Early Engines: Hispano-Suiza
07-08-2022 - R-1830 Foundry Pattern and Die Work at Buick
07-08-2022 - R-1830 Machining and Assembly, Buick, Melrose, Illinois
07-07-2022 - Wright Duplex Cyclone R-3350 (972TC18DA) Performance Data (Members Section)
07-07-2022 - Wright Duplex Cyclone R-3350 (988TC18EA) Performance Data (Members Section)
07-07-2022 - R-1830 Cylinder Head Manufacture at Buick
07-01-2022 - Early Engines: Hiero
06-30-2022 - Metropolitan Vickers, the Gas Turbine, and the State:
A Socio-Technical History, 1935-1960, by Jakob Whitfield
06-30-2022 - Pratt & Whitney R-1830 Engine Manufacture at Buick
06-30-2022 - Pratt & Whitney R-1830 Reduction Gear Manufacture at Buick
06-30-2022 - Early Engines: Harriman
06-30-2022 - Early Engines: Hansen & Snow
06-30-2022 - Early Engines: Heath-Henderson
06-23-2022 - Early Engines: Hall-Scott
06-16-2022 - Early Engines: Gyro
06-15-2022 - Early Engines: Green
06-13-2022 - Early Engines: Gnome-Rhone
06-13-2022 - Early Engines: Gnome
06-11-2022 - Early Engines: Galloway
06-07-2022 - Early Engines: Fox
06-07-2022 - Early Engines: Fiat
06-01-2022 - AEHS Members 2022 Newsletter #2
05-31-2022 - Early Engines: Farman
05-30-2022 - Early Engines: Farina
05-28-2022 - Early Engines: Farcot
05-28-2022 - Early Engines: Fairchild
05-14-2022 - Early Engines: E.N.V.
05-14-2022 - Early Engines: Engineering Division
05-11-2022 - Early Engines: Elbridge
05-08-2022 - Early Engines: Duesenberg
05-08-2022 - Early Engines: Duthiel-Chalmers
05-07-2022 - Early Engines: Detroit Aero
05-07-2022 - Early Engines: Dodge
05-06-2022 - Early Engines: Darracq
05-06-2022 - Early Engines: De Dion
05-04-2022 - Museum Flugausstellung Peter Junior
05-01-2022 - Early Engines: Bristol
04-26-2022 - Early Engines: Curtiss
04-18-2022 - Early Engines: Cosmos
04-12-2022 - Early Engines: Clerget
04-06-2022 - Early Engines: Cirrus
03-30-2022 - Early Engines: Bugatti
03-30-2022 - Early Engines: BMW
03-27-2021 - Technik Museum Speyer
03-24-2022 - Early Engines: Benz
03-19-2022 - Technik Museum Sinsheim
03-17-2022 - Early Engines: Bentley
03-11-2022 - Early Engines: Beardmore
03-10-2022 - Tom Fey’s Righter 4-O-34 Restoration Part 1
03-07-2022 - The Vortex and the Jet by Reiner Decher
03-05-2022 - Early Engines: Argus
03-01-2022 - AEHS Members 2022 Newsletter #1
02-28-2022 - Early Engines: Anzani
02-26-2022 - Early Engines: Antoinette
02-24-2022 - Early Engines: Ansaldo
02-22-2022 - Early Engines: Aeromarine
02-17-2022 - Early Engines: Adams-Farwell
02-17-2022 - Reno 2021 Photo Gallery (Members Section)
02-15-2022 - Early Engines: A.B.C.
02-09-2022 - Reno 2021
02-04-2022 - Mounting Troubles by Lee S. Langston
02-04-2022 - Powering Out of Troubles by Lee S. Langston
02-04-2022 - Single-Crystal Turbine Blades Earn ASME Milestone Status by Lee S. Langston
01-29-2022 - The Lockheed L-1000 (XJ37) Turbojet
01-15-2022 - Book Review: Jet: The Story of a Pioneer by Sir Frank Whittle
01-01-2022 - Search AEHS Document Collection for 'Aviation Fuels' scan by Tom Fey (Members Section)
10-06-2020 - U.S. WWII Engine Production
10-06-2020 - U.S. WWII Propeller Production
10-01-2020 - Turbosupercharger Control Systems: Part 1 — Oil Pressure Powered
10-01-2020 - Turbosupercharger Control Systems: Part 2 — Electronic
10-01-2021 - Manned U.S. Rocket Propulsion – V-2 to Moon Landing
08-17-2019 - U.S. Military Aircraft Manual Index
08-16-2019 - U.S. Military Engine Manual Index
11-13-2018 - Studebaker XH-9350 Aircraft Engine
11-04-2018 - A German Assessment of the Allison V-1710 Aircraft Engine
09-01-2018 - Packard-Built V-1650, Rolls-Royce Merlin XXVII Engineering Information
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
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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