def test_lf_needed_fuel(self):
m_c = physics.lf_needed_fuel([1750, 580, 310, 792], 4 * [345], 1500,
1 / 8)
self.assertAlmostEqual(m_c, 3378.94, places=1)
m_c = physics.lf_needed_fuel([1750, 580, 310, 792], 3 * [345] + [300],
1500, 1 / 8)
self.assertAlmostEqual(m_c, 3625.64, places=1)
def CreateRadialLFEnginesDesign(payload, pressure, dv, acc, eng, size, count):
design = Design(payload, eng, count, size)
lf = physics.lf_needed_fuel(dv, physics.engine_isp(eng, pressure), design.mass, 1/8)
if lf is None:
return None
design.AddLiquidFuelTanks(9/8 * lf)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateRadialLFEnginesDesign(payload, pressure, dv, acc, eng, size, count):
design = Design(payload, eng, count, size)
lf = physics.lf_needed_fuel(dv, physics.engine_isp(eng, pressure),
design.mass, 1 / 8)
if lf is None:
return None
design.AddLiquidFuelTanks(9 / 8 * lf)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateMonoPropellantEngineDesign(payload, pressure, dv, acc, engine, tank, count):
design = Design(payload, engine, count, tank.size)
f_e = engine.f_e
mp = physics.lf_needed_fuel(dv, physics.engine_isp(engine, pressure),
design.mass, f_e)
if mp is None:
return None
design.AddMonoPropellantTanks((1+f_e) * mp, tank)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateElectricPropulsionSystemDesign(payload, pressure, dv, acc):
design = Design(payload, parts.ElectricPropulsionSystem, 1, parts.RadialSize.Tiny)
f_e = parts.ElectricPropulsionSystem.f_e
xf = physics.lf_needed_fuel(dv, physics.engine_isp(parts.ElectricPropulsionSystem, pressure),
design.mass, f_e)
if xf is None:
return None
design.AddXenonTanks((1+f_e) * xf)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateAtomicRocketMotorDesign(payload, pressure, dv, acc):
design = Design(payload, parts.AtomicRocketMotor, 1, parts.RadialSize.Small)
f_e = parts.AtomicRocketMotor.f_e
af = physics.lf_needed_fuel(dv, physics.engine_isp(parts.AtomicRocketMotor, pressure),
design.mass, f_e)
if af is None:
return None
design.AddAtomicFuelTanks((1+f_e) * af)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateMonoPropellantEngineDesign(payload, pressure, dv, acc, engine, tank,
count):
design = Design(payload, engine, count, tank.size)
f_e = engine.f_e
mp = physics.lf_needed_fuel(dv, physics.engine_isp(engine, pressure),
design.mass, f_e)
if mp is None:
return None
design.AddMonoPropellantTanks((1 + f_e) * mp, tank)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateElectricPropulsionSystemDesign(payload, pressure, dv, acc):
design = Design(payload, parts.ElectricPropulsionSystem, 1,
parts.RadialSize.Tiny)
f_e = parts.ElectricPropulsionSystem.f_e
xf = physics.lf_needed_fuel(
dv, physics.engine_isp(parts.ElectricPropulsionSystem, pressure),
design.mass, f_e)
if xf is None:
return None
design.AddXenonTanks((1 + f_e) * xf)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def CreateAtomicRocketMotorDesign(payload, pressure, dv, acc):
design = Design(payload, parts.AtomicRocketMotor, 1,
parts.RadialSize.Small)
f_e = parts.AtomicRocketMotor.f_e
af = physics.lf_needed_fuel(
dv, physics.engine_isp(parts.AtomicRocketMotor, pressure), design.mass,
f_e)
if af is None:
return None
design.AddAtomicFuelTanks((1 + f_e) * af)
design.CalculatePerformance(dv, pressure)
if not design.EnoughAcceleration(acc):
return None
return design
def test_lf_needed_fuel(self):
m_c = physics.lf_needed_fuel([1750, 580, 310, 792], 4*[345], 1500, 1/8)
self.assertAlmostEqual(m_c, 3378.94, places=1)
m_c = physics.lf_needed_fuel([1750, 580, 310, 792], 3*[345]+[300], 1500, 1/8)
self.assertAlmostEqual(m_c, 3625.64, places=1)