The Beardmore Tornado is an eight-cylinder inline diesel aircraft engine built in 1927 by William Beardmore and Company of Glasgow, Scotland, and used in the British R101 airship when petrol engines were thought unsafe in the tropics.

The big end bearings were also found to be prone to early failure, In addition, there were two critical vibration frequencies which coincided with idling and cruising speeds, resulting in a limitation on the maximum rpm and consequently a reduction in power output.

The Tornado had steam cooling; water in the cylinder jackets was allowed to come to boiling point, and then condensed in three small triangular radiators on the hull above the power cars, or for the two midships engines was condensed in a retractable radiator and used to heat the passenger accommodation.

Running the engines at a relatively high thermal temperature was expected to improve the specific fuel consumption.

The proposed R102 airship was to have seven engines of an improved version of the Tornado, having an output of 850 bhp (630 kW, maximum) or 700 bhp (520 kW, cruising, continuous),[4] but the project was cancelled in 1931 after the crash of the R101 and the end of the Imperial Airship Scheme.