Vertical take off

Twenty years after ever jet flight took place, vertical takeoff and landing (VTOL) emerged as a concept, which was soon to be successfully implemented. Dr A.A Griffith, in 1941 who was then the chief engineer of Rolls Royce ltd. put forward this idea in his paper to the aeronautical research council. He proposed the idea of using small lift engines for lift only and not for normal flight. He claimed that there was great advantage in using a wing configuration and propulsion system without reference to take off and landing. This was vertical take off and landing not for its own sake but as a means to an end being a more efficient aircraft.
The 60’s and 70’s saw the most exciting phase of development in VTOL where in the five important criteria of high thrust\weight ratio , low efflux velocity , low fuel consumption and low machinery noise were successfully dealt with.
Rolls Royce has been working on VTOL power plants for more than 35 years. A large fund of practical knowledge on the installation and operation of a variety of VTOL power plants has been accumulated in the form of experimental aircrafts and test rigs.


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