Question

How much horsepower would the Challenger Hellcat Redeye Widebody need to run the speed of sound...

How much horsepower would the Challenger Hellcat Redeye Widebody need to run the speed of sound arrives before the sound of its legendary engine arrives?

Pro Tips

  • Assume Stock Redeye Widebody curb weight
  • Assume no wind
  • Assume no driveline losses
  • Redeye traveling at the speed of sound (760 MPH --> 1116.4ft/sec)



What you need to know:

  • HP = Fsum x V/hp
  • F drag = 1/2 pv^2 CdA
  • F rolling resistance = Crr x Weight
  • F sum = F drag + F rolling resistance
  • Cd = .398
  • A = 26.72 Ft^2
  • Crr = .015
  • p= .002377 slugs/ft^3
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