Handley Page Hermes - Variants

Variants

All 29 aircraft were built at Radlett Aerodrome, Hertfordshire, England.

H.P.68 Hermes 1

Prototype powered by four 1,650 hp (1,230 kW) Bristol Hercules 101 radial engines, one built.

H.P.74 Hermes 2

Prototype powered by four 1,675 hp (1,249 kW) Bristol Hercules 121 engines and a 13 ft (4.57 m) longer forward fuselage, one built.

H.P.81 Hermes 4

Production aircraft with tricycle landing gear and powered by four 2,100 hp (1,570 kW) Bristol Hercules 763 engines, 25 built.

H.P.81 Hermes 4A

Hermes 4 aircraft modified to use use 100-octane fuel with the engine re-designated Hercules 773, most converted back to Hermes 4 standard.

H.P.82 Hermes 5

Development aircraft with four 2,490 hp (1,860 kW) Bristol Theseus 502 turboporops, two built.