Good old committes
The use of a diesel engine in the R101 was the result of a government committee that decided that petrol was too flammable for the trip to India. Forgetting, strangely enough, the millions of cubic feet of hydrogen filling the hull!
Consequently, the ship was stricken with locomotive engines that were too heavy, unreliable couldn't run at full speed otherwise they would shake themselves apart. This was a contributory factor in it crashing in France as it didn't have enough power to try and get above the rain that was weighing it down from the moment it took off.
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