"The Pedestrian wasted no time on the landscape but set out at once with the determined stride of a good walker who has lately realized that he will have to walk farther than He intended." --Out of the Silent Planet
This pair of Mk. V Hawker Tempest's demonstrate the two different power plants tried out. Nearest is an experimental machine fitted with an annular radiator for its Sabre engine, while EJ 823 was a standard in service version with a Napier Sabre engine with the well known "beard" radiator.