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NONLIN25.ZIP
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MINFUEL.NLR
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1992-08-08
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841b
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!
! Compute how long to fire horizontal thrusters so that the total fuel
! consumed is minimized. The minimum value of the function is the total
! amount of fuel that will be used. The 'time' parameter is the length
! of time that the horizontal thruster should be fired (in seconds).
!
Title Compute fire time for thruster to minimize total fuel consumption
Register ! Please register your use of Nonlin
Constant G=1.67 ! Gravitational acceleration on moon (meters/sec^2)
Constant A=1.10 ! Acceleration from horizontal thruster (meters/sec^2)
Constant burnrate=2.3 ! Kg/sec fuel burn rate to produce 1 G acceleration
Constant dist=200 ! Horizontal distance to be moved (meters)
Parameter time ! Number of seconds to fire horizontal thruster
Function burnrate*(2*time*A/G + 2*time + (dist - A*time^2)/(A*time))
Data