Propulsion

Use this for “A compressor with ηc = 0.85 takes in air at 300 K and has a pressure ratio of 10. What is its exit temperature?”

Use this for “A turbojet takes in 50 kg/s of air at 250 m/s and jets it out at 600 m/s, burning 0.9 kg/s of fuel. Find F, TSFC and ηₚ.”

Use this for “A turbofan’s core takes 20 kg/s with a bypass ratio of 5 at 230 m/s. The core jet leaves at 500 m/s, the fan jet at 320 m/s. Find its thrust.”

Use this for “An engine burns 250 kg/s at vₑ = 2900 m/s, with pₑ = 70 kPa on a 1 m² exit at sea level. What are F and Iₛₚ?”

Use this for “Stage 1 (300 s) takes a 120 t rocket to 50 t; stage 2 (340 s) takes 30 t to 10 t. What is the total Δv?”

Use this for “Gas with γ = 1.2 and R = 350 J/(kg·K) leaves a 3200 K chamber, expanding to 1% of the chamber pressure. Find vₑ.”

Use this for “Air enters the burner at 600 K. What fuel–air ratio heats it to 1400 K with 43,000 kJ/kg fuel, and what is φ?”

Use this for “Xenon ions (131.29 u) leave through a 1100 V grid in a 1.5 A beam. Find vₑ, ṁ, F and Iₛₚ.”

Use this for “A 1000 kg probe with an 1800 s, 339.8 mN thruster needs Δv = 2 km/s. How much propellant, and how long a burn?”