An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

100th Anniversary Logo with the 100 in large letters and the museum logo
Open 9 a.m. to 5 p.m. seven days a week.
FREE Admission & Parking

Kettering Aerial Torpedo “Bug”

In 1917 Charles F. Kettering of Dayton, Ohio, invented the unmanned Kettering Aerial Torpedo, nicknamed the "Bug." Launched from a four-wheeled dolly that ran down a portable track, the Bug's system of internal pre-set pneumatic and electrical controls stabilized and guided it toward a target. After a predetermined length of time, a control closed an electrical circuit, which shut off the engine. Then, the wings were released, causing the Bug to plunge to earth -- where its 180 pounds of explosive detonated on impact.

The Dayton-Wright Airplane Co. built fewer than 50 Bugs before the Armistice, and the Bug never saw combat. After the war, the U.S. Army Air Service conducted additional tests, but the scarcity of funds in the 1920s halted further development. Museum personnel built this full-size reproduction of the Bug, and it went on display in 1964.


TECHNICAL NOTES: 
Armament:
180 lbs. of high explosive
Engine: One De Palma 4-cylinder of 40 hp 
Maximum speed: 120 mph
Range: 75 miles
Span: 14 ft. 11 1/2 in.
Length: 12 ft. 6 in.
Height: 4 ft. 8 in.
Weight: 530 lbs. loaded

Click here to return to the Early Years Gallery.