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- The Fickett–Jacobs cycle is a conceptual thermodynamic cycle that allows to compute an upper limit to the amount of mechanical work obtained from a cycle using an unsteady detonation process (explosive). The Fickett–Jacobs (FJ) cycle is based on Chapman–Jouguet (CJ) theory, an approximation for the detonation wave's velocity during a detonation. This cycle is researched for rotating detonation engines (RDE), considered to be more efficient than the classical combustion engines that are based on the Brayton or Humphrey cycles. The FJ cycle for detonation is an elaboration of the original ideas of Jacobs (1956). The first to propose applying thermodynamic cycles to detonation was Yakov Zeldovich in 1940. In his work, he concluded that the efficiency of the detonation cycle is slightly larger than that of previous constant-volume combustion cycles. Zeldovich's ideas were not known to Jacbos or Fickett. Since 1940, serious attempts have been discussed for detonating propulsion systems, nevertheless, until today, no practical approach has been found. Detonation is the process by which material is very rapidly burned and converted into energy (extremely high combustion rate). The major difficulty involved in the process is the necessity to rapidly mix the fuel and air at high speeds and sustaining the detonation in a controllable manner. (en)
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- The Fickett–Jacobs cycle is a conceptual thermodynamic cycle that allows to compute an upper limit to the amount of mechanical work obtained from a cycle using an unsteady detonation process (explosive). The Fickett–Jacobs (FJ) cycle is based on Chapman–Jouguet (CJ) theory, an approximation for the detonation wave's velocity during a detonation. This cycle is researched for rotating detonation engines (RDE), considered to be more efficient than the classical combustion engines that are based on the Brayton or Humphrey cycles. (en)
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- Fickett–Jacobs cycle (en)
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