Greek

Apollo

Armstrong Whitworth AW.55 Apollo – 1940s British airliner which never made it past test flying

Ares

Scaled Composites Model 151 ARES – American technology demonstrator

Hermes

Elbit Hermes – series of unmanned aerial vehicles from Israel

Poseidon

Boeing P-8 Poseidon – maritime patrol aircraft based on the Boeing 737 utilised by the US Navy, Royal Air Force, Royal Australian Air Force and Indian Navy and ordered by Norway, South Korea and New Zealand

Known as Neptune in Indian service

Roman

Ceres

CAC Ceres – Australian cropduster

Hercules

Lockheed C-130 Hercules – extremely prolific transport and specialised role aircraft

Juno

H135 Juno HT1 – training helicopter used by the UK Defence Helicopter Flying School

Jupiter

H145 Jupiter – larger version of the Juno outfitted with winch equipment

Mars

Martin Mars – large seaplane designed during WW2 and still in limited use for firefighting 

Mercury

Boeing E-6B Mercury – based on the 707, operated solely by the US Navy in a command and control role. The aircraft can communicate to all US strategic forces, including nuclear submarines via a 5 mile long trailing wire antenna.

Neptune

Lockheed P-2 Neptune – early maritime patrol aircraft developed at the end of WW2

Saturn

Lockheed Saturn – 1940s airliner that never got past prototyping

Vulcan

Avro Vulcan – one of the UK’s V Bombers, designed to carry nuclear weapons