C++ skills demonstration: a simulator to simulate some eVTOL aircraft flying around to see how they perform carrying passengers when limited chargers are available and they all have different specs, such as range, recharge time, and number of passengers they can carry.
Since each simulation run injects randomness using C++'s robust pseudo-random number generators, the results of repeated runs of the simulation comprise a Monte Carlo simulation.
Click here for the full problem description
(click to expand)
- break apart into multiple modules, each with a header and source file.
- [nah] add setters and getters, perhaps; nah.
- (optional) add namespaces to modules
Next:
- add clang-format
- add gtest and a few basic unit tests
- add a test fixture as a
FRIEND_TESTin order to test private class functions. See example gtest code here!: https://github.com/google/googletest/blob/main/docs/advanced.md#testing-private-code
- add a test fixture as a
- finish/fix all build instructions below
- https://en.cppreference.com/w/cpp/numeric/random
- https://en.wikipedia.org/wiki/Monte_Carlo_method
- [my answer] How to install Google Test (
gtest) and Google Mock (gmock) as shared, static.alibraries, system-wide, on Linux/Unix
-
Provided Assumptions
- Each vehicle starts the simulation with a fully-charged battery
- Each vehicle instantaneously reaches Cruise Speed
- Each vehicle is airborne for the full use of the battery, and is immediately in line for the charger after running out of battery power.
- Chargers are a scarce resoure, as there are only 3 of them, so vehicles must wait in line if they are all taken.
- The simulation will cover 20 vehicles randomly selected from 5 different companies, flying and charging continuously, as needed, for 3 hours.
-
Additional Assumptions:
- faults can only occur during flying, NOT during waiting for a charger, or charging.
- faults don't make the vehicle stop flying; it keeps flying; you just count the faults
- when the plane runs out of fuel it is instantly at the charger without adding distance
- only charge when the battery is empty (at 0% State of Charge (SoC))
- "the probability of fault per hour" statistic should be evenly spread across the time steps, to provide a more-realistic "real-life" simulation, providing for the ability to run this simulation "real time" if you wanted to train ground support personal to actually respond to the emergencies and operations at the predicted real-time cadence.
- once a vehicle gets on the charger, it will stay there until full
- each vehicle is fully loaded with passengers every flight
- To see the full effect of what
clang-formatdid, as I tweak the.clang-formatconfig file and all, run this:git difftool 1f8e7ec86e29eb630924459fbbccb8ed77d9070d..e1c49be9e7037c86596341e43decaacc7c6863e8
Install dependencies:
# ccache
sudo apt install ccache
# git lfs; see: https://packagecloud.io/github/git-lfs/install
curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
# clang-format
sudo apt install clang-format
# install gtest
# From my full instructions here: https://stackoverflow.com/a/75718815/4561887
sudo apt update
sudo apt install cmake
# You can find some of these instructions, here:
# https://github.com/google/googletest/tree/main/googletest
time git clone https://github.com/google/googletest.git
cd googletest # "Main directory of the cloned repository."
mkdir build # "Create a directory to hold the build output."
cd build
time cmake .. # "Generate native make build scripts for GoogleTest."
# Takes ~2 seconds.
time make # Run those makefiles just autogenerated by cmake above.
# Takes ~10 seconds.
sudo make install # Install the .a library files, and headers, into
# /usr/local/.Get this repo:
# get this repo
git clone https://github.com/ElectricRCAircraftGuy/eVTOL_simulation.git
cd eVTOL_simulation
git lfs pull
git submodule update --init --recursiveUpdate this repo whenever you need to pull my latest changes:
git pull
git lfs pull
git submodule update --init --recursiveRun clang-format to auto-format the C++ code:
# from the root of the repo
./run_clang-format.shBuild and run the program
# build and run both the unit tests and main program
./build.sh
# build and run ONLY the unit tests
./build.sh tests
# build and run ONLY the main program
./build.sh main
# Just run the already-built unit tests, without rebuilding
time bin/evtol_simulation_unittest
# Just run the already-built simulation, without rebuilding
time bin/evtol_simulationeVTOL_simulation$ ./build.sh
No arguments; building and running both unit tests and the main program.
=================================================
Building and running evtol_simulation_unittest.
=================================================
Building...
real 0m3.058s
user 0m2.805s
sys 0m0.241s
Running...
Running main() from /home/gabriel/GS/dev/temp/googletest/googletest/src/gtest_main.cc
[==========] Running 2 tests from 2 test suites.
[----------] Global test environment set-up.
[----------] 1 test from SimulationTestFixture
[ RUN ] SimulationTestFixture.EndToEndTest
Done running simulation. Calculating results.
[ OK ] SimulationTestFixture.EndToEndTest (2 ms)
[----------] 1 test from SimulationTestFixture (2 ms total)
[----------] 1 test from Simulation
[ RUN ] Simulation.TrivialEndToEnd
Done running simulation. Calculating results.
[ OK ] Simulation.TrivialEndToEnd (0 ms)
[----------] 1 test from Simulation (0 ms total)
[----------] Global test environment tear-down
[==========] 2 tests from 2 test suites ran. (3 ms total)
[ PASSED ] 2 tests.
=================================================
Building and running evtol_simulation.
=================================================
Building...
real 0m1.882s
user 0m1.746s
sys 0m0.129s
Running...
Running simulation
Vehicle types:
Alpha Primary values: 120.00 320.00 0.60 1.60000000 4 0.25
Derived values: max_range_miles=200.00 max_flight_time_hrs=1.67 cruise_power_kw=192.00
Bravo Primary values: 100.00 100.00 0.20 1.50000000 5 0.10
Derived values: max_range_miles=66.67 max_flight_time_hrs=0.67 cruise_power_kw=150.00
Charlie Primary values: 160.00 220.00 0.80 2.20000000 3 0.05
Derived values: max_range_miles=100.00 max_flight_time_hrs=0.62 cruise_power_kw=352.00
Delta Primary values: 90.00 120.00 0.62 0.80000000 2 0.22
Derived values: max_range_miles=150.00 max_flight_time_hrs=1.67 cruise_power_kw=72.00
Echo Primary values: 30.00 150.00 0.30 5.80000000 2 0.61
Derived values: max_range_miles=25.86 max_flight_time_hrs=0.86 cruise_power_kw=174.00
Vehicles:
i name
----------
0: Echo
1: Bravo
2: Echo
3: Alpha
4: Delta
5: Charlie
6: Delta
7: Bravo
8: Bravo
9: Alpha
10: Delta
11: Alpha
12: Alpha
13: Charlie
14: Echo
15: Delta
16: Alpha
17: Delta
18: Echo
19: Echo
DEBUG: num_steps = 10800
Done running simulation. Calculating results.
DEBUG: 0: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 4
DEBUG: 1: Bravo, num_flights = 3, flight_time_hrs = 2.001944, distance_miles = 200.194444, num_times_waiting = 2, wait_time_hrs = 0.597500, num_charges = 2, charge_time_hrs = 0.400556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 2: Echo, num_flights = 3, flight_time_hrs = 2.356111, distance_miles = 70.683333, num_times_waiting = 2, wait_time_hrs = 0.043333, num_charges = 2, charge_time_hrs = 0.600556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 3: Alpha, num_flights = 2, flight_time_hrs = 2.039722, distance_miles = 244.766667, num_times_waiting = 1, wait_time_hrs = 0.360000, num_charges = 1, charge_time_hrs = 0.600278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 4: Delta, num_flights = 2, flight_time_hrs = 1.677778, distance_miles = 151.000000, num_times_waiting = 1, wait_time_hrs = 0.701944, num_charges = 1, charge_time_hrs = 0.620278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 5: Charlie, num_flights = 2, flight_time_hrs = 1.250556, distance_miles = 200.088889, num_times_waiting = 1, wait_time_hrs = 0.575833, num_charges = 2, charge_time_hrs = 1.173611, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 6: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.322222, num_charges = 1, charge_time_hrs = 0.010833, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 7: Bravo, num_flights = 2, flight_time_hrs = 1.334444, distance_miles = 133.444444, num_times_waiting = 2, wait_time_hrs = 1.465278, num_charges = 1, charge_time_hrs = 0.200278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 8: Bravo, num_flights = 2, flight_time_hrs = 1.334444, distance_miles = 133.444444, num_times_waiting = 2, wait_time_hrs = 1.465278, num_charges = 1, charge_time_hrs = 0.200278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 9: Alpha, num_flights = 1, flight_time_hrs = 1.666667, distance_miles = 200.000000, num_times_waiting = 1, wait_time_hrs = 1.333333, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 10: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.333056, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 11: Alpha, num_flights = 1, flight_time_hrs = 1.666667, distance_miles = 200.000000, num_times_waiting = 1, wait_time_hrs = 1.333333, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 12: Alpha, num_flights = 1, flight_time_hrs = 1.666667, distance_miles = 200.000000, num_times_waiting = 1, wait_time_hrs = 1.333333, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 13: Charlie, num_flights = 2, flight_time_hrs = 1.250556, distance_miles = 200.088889, num_times_waiting = 1, wait_time_hrs = 0.948889, num_charges = 1, charge_time_hrs = 0.800556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 14: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 15: Delta, num_flights = 2, flight_time_hrs = 2.320556, distance_miles = 208.850000, num_times_waiting = 1, wait_time_hrs = 0.059167, num_charges = 1, charge_time_hrs = 0.620278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 16: Alpha, num_flights = 2, flight_time_hrs = 1.720000, distance_miles = 206.400000, num_times_waiting = 1, wait_time_hrs = 0.679722, num_charges = 1, charge_time_hrs = 0.600278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 17: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.279722, num_charges = 1, charge_time_hrs = 0.053333, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 18: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 2
DEBUG: 19: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
Results by vehicle type:
- The most important results, in my opinion, are marked with "<====".
Vehicle type: Alpha
Extra data:
num_vehicles = 5
total_num_flights = 7
total_flight_time_hrs = 8.759722
total_distance_miles = 1051.166667
total_num_charges = 2
total_charge_time_hrs = 1.200556
total_num_times_waiting = 5
total_wait_time_hrs = 5.039722
sum of all 3 times (hrs) = 15.000000
avg faults per vehicle = 0.000000 <==
avg passenger miles per vehicle = 4204.666667 <====
Required data:
avg_flight_time_per_flight_hrs = 1.251389
avg_distance_per_flight_miles = 150.166667
avg_charge_time_per_session_hrs = 0.600278
total_num_faults = 0
total_num_passenger_miles = 21023.333333
Vehicle type: Bravo
Extra data:
num_vehicles = 3
total_num_flights = 7
total_flight_time_hrs = 4.670833
total_distance_miles = 467.083333
total_num_charges = 4
total_charge_time_hrs = 0.801111
total_num_times_waiting = 6
total_wait_time_hrs = 3.528056
sum of all 3 times (hrs) = 9.000000
avg faults per vehicle = 0.333333 <==
avg passenger miles per vehicle = 2335.416667 <====
Required data:
avg_flight_time_per_flight_hrs = 0.667262
avg_distance_per_flight_miles = 66.726190
avg_charge_time_per_session_hrs = 0.200278
total_num_faults = 1
total_num_passenger_miles = 7006.250000
Vehicle type: Charlie
Extra data:
num_vehicles = 2
total_num_flights = 4
total_flight_time_hrs = 2.501111
total_distance_miles = 400.177778
total_num_charges = 3
total_charge_time_hrs = 1.974167
total_num_times_waiting = 2
total_wait_time_hrs = 1.524722
sum of all 3 times (hrs) = 6.000000
avg faults per vehicle = 0.000000 <==
avg passenger miles per vehicle = 1200.533333 <====
Required data:
avg_flight_time_per_flight_hrs = 0.625278
avg_distance_per_flight_miles = 100.044444
avg_charge_time_per_session_hrs = 0.658056
total_num_faults = 0
total_num_passenger_miles = 2401.066667
Vehicle type: Delta
Extra data:
num_vehicles = 5
total_num_flights = 7
total_flight_time_hrs = 8.999167
total_distance_miles = 809.925000
total_num_charges = 4
total_charge_time_hrs = 1.304722
total_num_times_waiting = 5
total_wait_time_hrs = 4.696111
sum of all 3 times (hrs) = 15.000000
avg faults per vehicle = 0.200000 <==
avg passenger miles per vehicle = 1619.850000 <====
Required data:
avg_flight_time_per_flight_hrs = 1.285595
avg_distance_per_flight_miles = 115.703571
avg_charge_time_per_session_hrs = 0.326181
total_num_faults = 1
total_num_passenger_miles = 8099.250000
Vehicle type: Echo
Extra data:
num_vehicles = 5
total_num_flights = 11
total_flight_time_hrs = 9.256111
total_distance_miles = 277.683333
total_num_charges = 6
total_charge_time_hrs = 1.801667
total_num_times_waiting = 10
total_wait_time_hrs = 3.942222
sum of all 3 times (hrs) = 15.000000
avg faults per vehicle = 1.200000 <==
avg passenger miles per vehicle = 555.366667 <====
Required data:
avg_flight_time_per_flight_hrs = 0.841465
avg_distance_per_flight_miles = 25.243939
avg_charge_time_per_session_hrs = 0.300278
total_num_faults = 6
total_num_passenger_miles = 2776.833333
eVTOL_simulation$ time bin/evtol_simulation
Running simulation
Vehicle types:
Alpha Primary values: 120.00 320.00 0.60 1.60000000 4 0.25
Derived values: max_range_miles=200.00 max_flight_time_hrs=1.67 cruise_power_kw=192.00
Bravo Primary values: 100.00 100.00 0.20 1.50000000 5 0.10
Derived values: max_range_miles=66.67 max_flight_time_hrs=0.67 cruise_power_kw=150.00
Charlie Primary values: 160.00 220.00 0.80 2.20000000 3 0.05
Derived values: max_range_miles=100.00 max_flight_time_hrs=0.62 cruise_power_kw=352.00
Delta Primary values: 90.00 120.00 0.62 0.80000000 2 0.22
Derived values: max_range_miles=150.00 max_flight_time_hrs=1.67 cruise_power_kw=72.00
Echo Primary values: 30.00 150.00 0.30 5.80000000 2 0.61
Derived values: max_range_miles=25.86 max_flight_time_hrs=0.86 cruise_power_kw=174.00
Vehicles:
i name
----------
0: Echo
1: Alpha
2: Delta
3: Charlie
4: Delta
5: Delta
6: Charlie
7: Delta
8: Echo
9: Delta
10: Bravo
11: Charlie
12: Echo
13: Echo
14: Alpha
15: Charlie
16: Alpha
17: Alpha
18: Delta
19: Echo
DEBUG: num_steps = 10800
Done running simulation. Calculating results.
DEBUG: 0: Echo, num_flights = 1, flight_time_hrs = 0.862222, distance_miles = 25.866667, num_times_waiting = 1, wait_time_hrs = 2.137778, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 1: Alpha, num_flights = 1, flight_time_hrs = 1.666667, distance_miles = 200.000000, num_times_waiting = 1, wait_time_hrs = 1.333333, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 2: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.333056, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 3: Charlie, num_flights = 2, flight_time_hrs = 1.250556, distance_miles = 200.088889, num_times_waiting = 1, wait_time_hrs = 0.948889, num_charges = 1, charge_time_hrs = 0.800556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 4: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.333056, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 5: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.333056, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 6: Charlie, num_flights = 2, flight_time_hrs = 1.250556, distance_miles = 200.088889, num_times_waiting = 1, wait_time_hrs = 0.948889, num_charges = 1, charge_time_hrs = 0.800556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 7: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.333056, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 8: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 9: Delta, num_flights = 2, flight_time_hrs = 2.320556, distance_miles = 208.850000, num_times_waiting = 1, wait_time_hrs = 0.059167, num_charges = 1, charge_time_hrs = 0.620278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 10: Bravo, num_flights = 3, flight_time_hrs = 1.787778, distance_miles = 178.777778, num_times_waiting = 2, wait_time_hrs = 0.811667, num_charges = 2, charge_time_hrs = 0.400556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 11: Charlie, num_flights = 2, flight_time_hrs = 1.250556, distance_miles = 200.088889, num_times_waiting = 1, wait_time_hrs = 0.495556, num_charges = 2, charge_time_hrs = 1.253889, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 12: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 13: Echo, num_flights = 2, flight_time_hrs = 1.725000, distance_miles = 51.750000, num_times_waiting = 2, wait_time_hrs = 0.974722, num_charges = 1, charge_time_hrs = 0.300278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 14: Alpha, num_flights = 2, flight_time_hrs = 2.340278, distance_miles = 280.833333, num_times_waiting = 1, wait_time_hrs = 0.059444, num_charges = 1, charge_time_hrs = 0.600278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 15: Charlie, num_flights = 2, flight_time_hrs = 0.898333, distance_miles = 143.733333, num_times_waiting = 1, wait_time_hrs = 1.301111, num_charges = 1, charge_time_hrs = 0.800556, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 16: Alpha, num_flights = 2, flight_time_hrs = 1.740000, distance_miles = 208.800000, num_times_waiting = 1, wait_time_hrs = 0.659722, num_charges = 1, charge_time_hrs = 0.600278, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 17: Alpha, num_flights = 1, flight_time_hrs = 1.666667, distance_miles = 200.000000, num_times_waiting = 1, wait_time_hrs = 1.060278, num_charges = 1, charge_time_hrs = 0.273056, flight+wait+charge-time(hrs) = 3.000000, num_faults = 1
DEBUG: 18: Delta, num_flights = 1, flight_time_hrs = 1.666944, distance_miles = 150.025000, num_times_waiting = 1, wait_time_hrs = 1.259722, num_charges = 1, charge_time_hrs = 0.073333, flight+wait+charge-time(hrs) = 3.000000, num_faults = 0
DEBUG: 19: Echo, num_flights = 1, flight_time_hrs = 0.862222, distance_miles = 25.866667, num_times_waiting = 1, wait_time_hrs = 2.137778, num_charges = 0, charge_time_hrs = 0.000000, flight+wait+charge-time(hrs) = 3.000000, num_faults = 2
Results by vehicle type:
- The most important results, in my opinion, are marked with "<====".
Vehicle type: Alpha
Extra data:
num_vehicles = 4
total_num_flights = 6
total_flight_time_hrs = 7.413611
total_distance_miles = 889.633333
total_num_charges = 3
total_charge_time_hrs = 1.473611
total_num_times_waiting = 4
total_wait_time_hrs = 3.112778
sum of all 3 times (hrs) = 12.000000
avg faults per vehicle = 0.500000 <==
avg passenger miles per vehicle = 3558.533333 <====
Required data:
avg_flight_time_per_flight_hrs = 1.235602
avg_distance_per_flight_miles = 148.272222
avg_charge_time_per_session_hrs = 0.491204
total_num_faults = 2
total_num_passenger_miles = 14234.133333
Vehicle type: Bravo
Extra data:
num_vehicles = 1
total_num_flights = 3
total_flight_time_hrs = 1.787778
total_distance_miles = 178.777778
total_num_charges = 2
total_charge_time_hrs = 0.400556
total_num_times_waiting = 2
total_wait_time_hrs = 0.811667
sum of all 3 times (hrs) = 3.000000
avg faults per vehicle = 0.000000 <==
avg passenger miles per vehicle = 893.888889 <====
Required data:
avg_flight_time_per_flight_hrs = 0.595926
avg_distance_per_flight_miles = 59.592593
avg_charge_time_per_session_hrs = 0.200278
total_num_faults = 0
total_num_passenger_miles = 893.888889
Vehicle type: Charlie
Extra data:
num_vehicles = 4
total_num_flights = 8
total_flight_time_hrs = 4.650000
total_distance_miles = 744.000000
total_num_charges = 5
total_charge_time_hrs = 3.655556
total_num_times_waiting = 4
total_wait_time_hrs = 3.694444
sum of all 3 times (hrs) = 12.000000
avg faults per vehicle = 0.250000 <==
avg passenger miles per vehicle = 2232.000000 <====
Required data:
avg_flight_time_per_flight_hrs = 0.581250
avg_distance_per_flight_miles = 93.000000
avg_charge_time_per_session_hrs = 0.731111
total_num_faults = 1
total_num_passenger_miles = 8928.000000
Vehicle type: Delta
Extra data:
num_vehicles = 6
total_num_flights = 7
total_flight_time_hrs = 10.655278
total_distance_miles = 958.975000
total_num_charges = 2
total_charge_time_hrs = 0.693611
total_num_times_waiting = 6
total_wait_time_hrs = 6.651111
sum of all 3 times (hrs) = 18.000000
avg faults per vehicle = 0.000000 <==
avg passenger miles per vehicle = 1917.950000 <====
Required data:
avg_flight_time_per_flight_hrs = 1.522183
avg_distance_per_flight_miles = 136.996429
avg_charge_time_per_session_hrs = 0.346806
total_num_faults = 0
total_num_passenger_miles = 11507.700000
Vehicle type: Echo
Extra data:
num_vehicles = 5
total_num_flights = 8
total_flight_time_hrs = 6.899444
total_distance_miles = 206.983333
total_num_charges = 3
total_charge_time_hrs = 0.900833
total_num_times_waiting = 8
total_wait_time_hrs = 7.199722
sum of all 3 times (hrs) = 15.000000
avg faults per vehicle = 1.000000 <==
avg passenger miles per vehicle = 413.966667 <====
Required data:
avg_flight_time_per_flight_hrs = 0.862431
avg_distance_per_flight_miles = 25.872917
avg_charge_time_per_session_hrs = 0.300278
total_num_faults = 5
total_num_passenger_miles = 2069.833333
real 0m0.005s
user 0m0.005s
sys 0m0.000s