findMaximumClimbRate: Find maximum climb rate

Description

Numerically find the maximum attainable climb rate.

Usage

findMaximumClimbRate(bird, maximumPower, speed, ...)

Value

Data frame of class power.mechanical

speed: airspeed either prescribed or optimized for maximum climbrate
power: aerodynamic (mechanical) power matching maximum power
...: see computeFlappingPower for other variables
climbAngle: angle between flightpath and horizontal plane in degrees
climbRate: rate of vertical climb

Arguments

bird: bird description object (see Bird)
maximumPower: numeric value for maximum available mechanical power
speed: airspeed for which to compute the maximum climbrate
...: optional arguments for computeFlappingPower

Author

Marco Klein Heerenbrink

Details

The function searches for a climb angle between -90 and 90 degrees that matches the specified maximum power available. If no speed provided, the function will also find the optimal airspeed for maximum climbrate.

Examples

Run this code

## Define a bird:
myBird = Bird(
  massTotal = 0.215, #  (kg) total body mass
  wingSpan = 0.67, #  (m) maximum wing span
  wingArea = 0.0652, #  (m2) maximum wing area
  type = "passerine"
)

## maximum power available:
Paero.available <- computeAvailablePower(myBird)

climbSpeed <- 8 #  airspeed during climb

## find maximum climbrate:
Paero.climb <- findMaximumClimbRate(myBird,Paero.available,climbSpeed)
print(Paero.climb[c('speed','amplitude','frequency','climbRate')])
#   speed amplitude frequency climbRate
# 1     8  54.84965  5.948083  1.162002

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