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ASE 167M - Lecture 8

# ASE 167M - Lecture 8 - Lecture#8 ASE 167M Lecture 8 Click...

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Lecture #8 Click to edit Master subtitle style 9/18/11 ASE 167M Lecture 8 Climb and Glide Performance

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Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Today’s Topics Climb performance (Steady and Nonsteady) We have seen that for all altitudes below the ceiling, we have two solutions for steady level flight: a low speed solution Vmin and a high speed solution Vmax What happens if we try to fly at any speed V between these two solutions using full power? Now we have excess power and two things can happen: A/C will accelerate to Vmax if altitude is held constant The A/C will CLIMB Glide performance Flight briefing
Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Climb Performance Steady Climb – use the EOM for steady climb to write (R/C) and fi explicitly. Accelerated Climb or Nonsteady Climb – use Energy Methods to write (R/C) and ° as a function of the Specific Energy.

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Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Climb Performance - Steady From the FBD for a Steady Climb:
Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Climb Angle From EOM : From h :

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Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Rate of Climb W DV TV W D T V V h C R - = - = = = γ sin / From  EOM: required power available power where = = DV TV ( 29 power excess specific = - = W V D T P S D R/C is max when Ps is max
Lecture #8 9/18/11 ASE-167M Apurva Chunodkar Example Problem A 10,000 lb aircraft has 4,292 lbs thrust

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ASE 167M - Lecture 8 - Lecture#8 ASE 167M Lecture 8 Click...

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