(1). Name the very first mass-produced aircraft engine. (2). What was the great very first feature of this engine? (3). Date of first test? (4). Horsepower? (5), and displacement? 6). Names of the two men who developed it? (7,8). Various companies producing it? (9+10). (Ignore the gremlin coming up instead of number 8..

1. Gnome 7 Omega

2. Pressure operated inlet valve in centre of piston crown and single exhaust valve on cylinder head operated by pushrod.

3. I can only specify the year as 1908. Can find no record of day and month.

4. 50 hp.

5. 7.98 Litres (488.5 cu.ins.)

6. Brothers Louis and Laurent Seguin.

7. Clerget, Le Rhone, Gnome, Daimler, Bentley, Siemens, Oberursel.

Rob