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D Napier & Son were involved in the production and testing of a variety of Rocket Motors and Ram Jets.  This work was undertaken at the Napier Flight Development Establishment in Luton.


A 100lb thrst mono-propellant rocket was first fired in June 1949. The following year Napier won a contract with the National Gas Turbine Establishment (N.G.T.E.) of the Ministry of Supply to develop and produce a variety of rocket motors which were used in a number of different applications.  They also produced a series of Ram jets.


Napiers most famous rocket product was probably the Napier Scorpion rocket motor which was initially developed but not deployed as a booster unit for the English Electric Lightning.  It was successfully fitted in the EE Canbera WK163 which broke the World Altitude record for an aircraft in 1957.

NRE 11  -  Produced in some numbers and sent to the Woomera Test Range in Australia.

NRE 14  -  Technical complexities arising from the introduction of the latest RAF fighters int

                front line service (1950's) resulted in the Napier Scorpion rocket being considered to

                prolong the operational life of existing fighters, notably the Canadair Sabre.

NRE 15  -  This booster rocket was famously used on English Electric Canberra WK163 which set

                 the world altitude record of 70,310' (21,445 metres) for Great Britain on 28th August 1957.

NRE 19  -  Napier and Saunders-Roe (SARO) collaborated to develop a booster rocket system with    

                a small weight penalty to help multiply helicopter rotor power fpr climbing.

                Centrifugal force causes High Test Peroxide (HTP) to build a high pressure and flow

                through restrictor bleeds and pass throughcatalyst packs at the tip of the rotor blades.

                The decomposed peroxide escapes trough rear facing nozzles thus boosting the rotor

                power.  This system was installed in the Skeeter 5 and raised the vertical climb rate

                from 230 ft/min to 1,400 ft/min.