A radial flow reaction turbine has the following characteristics: Circumferential area at entrance and exit: A = 258 cm² , Acz = 180 cm² ; Q = 0.1 12.5 cm, B, = 140°, B2 = 155°, az = 90°, Ø, = 0.75, and nwyd = 92 % . Assume shockless entrance of water to blade. 1.n, = 0.82 , = 25 cm, rz %3D %3D %3D %3D

An ideal rocket has characteristic velocity c* = 1800 m/s, nozzle throat diameter of 25 cm, thrust coefficient CF = 1.47, and mass flow rate of 48 kg/s. Find: (1) the Chamber Pressure P1 Po, (2) the Thrust F, and (3) the Specific Impulse Iş. Show all calculations.

A turbojet engine with a convergent divergent nozzle expands the flow such that Po = 0.8 P, The engine has the following data at a flight Mach number of 1.5 : Te = 7.5 ,Tt4=1400 K, e. = et = 0.9 , y = 1.34 ,CP; = 1135 J/kg.K If the jet velocity is 1025 m/s, determine the flight altitude.

What is the advantage of nitriding? Select all correct answers.     Some complex components can be nitride without difficulty.     Better wear resistance.     Better fatigue resistance.     The cheapest method of case hardening.     What is the correct definition of plastic deformation?     The behavior of a material when its size changes by the addition of heat.     The behavior of a material that deforms under load and returns to its original shape when the load is removed.     Deformation caused by cleavage, where the material is actually pulled apart across atomic planes within the crystals or along the grain boundaries.     The behavior of a material that deforms under load and does not fully return to its original shape when the load is removed.