The Antonov An-225 is the heaviest aircraft ever built, with a maximum takeoff weight of 640 metric tonnes. It also has the largest wingspan of any aircraft in operational service. Sea level standard day (sls) conditions for calculations are 15°C; 101.3kPa Rotate speed (Vr) at takeoff (sls): Vr = 154 kts = 1.2×Vmin (1 kt = 0.514 m/s) Cruise Engine Thrust : a) Calculate the lift coefficient for a standard day takeoff b) Calculate the drag coefficient at cruis Fcruise = 0.85 Fmax Engine maximum thrust: Factual,max = Fsls,max×δ θ½   δ = Pactual/Pref; and   θ = Tref/Tactual

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The Antonov An-225 is the heaviest aircraft ever built, with a maximum takeoff weight of 640 metric tonnes. It also has the largest wingspan of any aircraft in operational service.

Sea level standard day (sls) conditions for calculations are 15°C; 101.3kPa

Rotate speed (Vr) at takeoff (sls):

Vr = 154 kts = 1.2×Vmin

(1 kt = 0.514 m/s)

Cruise Engine Thrust :

a) Calculate the lift coefficient for a standard day takeoff

b) Calculate the drag coefficient at cruis

Fcruise = 0.85 Fmax

Engine maximum thrust:

Factual,max = Fsls,max×δ θ½

  δ = Pactual/Pref; and

  θ = Tref/Tactual

Measurement
A380-800
Wing area
900 m2 (9,680 sq ft)
Maximum take-off weight
640,000 kg (1,400,000 lb)
Operating speed
(800 km/h, 500 mph, 430 knots)
(at cruise altitude)
Cruise altitude
12,500 m (41,000 ft)
Service ceiling
11,000 m (36,000 ft)l254]
Engines (6)
Progress D-18T
Thrust each (at sea level
229.5 kN (51,600 lbf)
standard day)
Transcribed Image Text:Measurement A380-800 Wing area 900 m2 (9,680 sq ft) Maximum take-off weight 640,000 kg (1,400,000 lb) Operating speed (800 km/h, 500 mph, 430 knots) (at cruise altitude) Cruise altitude 12,500 m (41,000 ft) Service ceiling 11,000 m (36,000 ft)l254] Engines (6) Progress D-18T Thrust each (at sea level 229.5 kN (51,600 lbf) standard day)
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