He based his argument on the extremely low efficiency of existing compressor designs.
The most expedient engine choice for the P-80 thus became the Allison J33 based on British centrifugal compressor designs.
Starting in 1936, Junkers started a jet engine development project under the direction of Wagner and Müller, who worked on axial compressor designs.
The inter prefix in the device name originates from historic compressor designs.
Griffiths, meanwhile, started studying the issues with compressor design.
They unanimously supported starting a development project to study Griffiths' compressor designs.
The RAE continued working on axial compressor design after the F.2 success.
He was given responsibility for compressor design generally, and among other projects worked on transonic compressors, this being well ahead of equivalent work in America.
The schedule shows that variable inlet guide vanes (IGV) were also part of the compressor design.
Griffith continued development of his own concepts, eventually developing an advanced compressor design using two contra-rotating stages that improved efficiency.