Glossary
| Term | Meaning |
|---|---|
| BTH | British Thomsons Houston, a magneto manufacturer |
| bhp | Brake horsepower |
| bmep | Brake mean effective pressure |
| bsfc | brake specific fuel consumption |
| CAT | carburetor air temperature |
| Division | U.S. Army Air Service/Corp Materiel Command Engineering Division. Equivalent to Air Corps and MatCmd |
| fmep | friction mean effective pressure |
| fps | feet per second |
| gpm | gallons per minute (flow) |
| gph | gallons per hour (flow) |
| imep | indicated mean effective pressure |
| inHgA | inches of mercury, absolute |
| inHgG | inches of mercury, gauge |
| IOM | Inter-Office Memorandum |
| isfc | indicated specific fuel consumption |
| MatCmd | The U.S. Army Air Corps Materiel Command at WF. Used interchangeably with the Division and Wright Field |
| OCAC | Office, Chief of the Air Corps |
| ¶ | Paragraph |
| PESCO | Pump Engineering Service Corporation |
| PPL | Wright Field Power Plant Laboratory |
| TE | Technical Executive |
| USAAC | U.S. Army Air Corps |
| Van Dyke | A sepia intermediate photographic reproduction paper used to make secondary tracing masters. The Van Dyke process allowed drafters to create a translucent negative copy of an original blueprint, which could then be used to print more blueprints on standard blueprint paper. |
| WF | Wright Field |