junzis / openap Goto Github PK
View Code? Open in Web Editor NEWOpen Aircraft Performance Model and Python Toolkit
Home Page: https://openap.dev
License: GNU Lesser General Public License v3.0
Open Aircraft Performance Model and Python Toolkit
Home Page: https://openap.dev
License: GNU Lesser General Public License v3.0
Hello !
I am a student working on flight planning and I noticed that the fuel flow (enroute) computed seems strange for cruising.
I tried to make a short case to illustrate it as you can see bellow. I have taken an A320 and computed the fuel flow in the same situation for different speed between a bit less than cruise speed (0,78) and the maximal cruise speed (0.82).
The fuel flow is always decreasing I think it should increase after the optimal mach 0.78.
Here is a plot and the code :
ac = aircraft(actype)
speeds = np.arange(start=ac["cruise"]["mach"]-0.04,stop=ac["limits"]["MMO"]+0.001,step=0.005)
res = []
masse = (ac["limits"]["MTOW"]+ac["limits"]["MLW"])//2
for speed in speeds:
s = op.aero.mach2tas(speed,35_000*op.aero.ft)
res.append(op.FuelFlow(actype).enroute(mass=masse , tas = s, alt=35_000))
fig = plt.Figure()
ax = plt.axes()
plt.xlabel("Mach")
plt.ylabel("Fuel flow computed at 35_000ft")
ax.plot(speeds, res)
plt.savefig("fflow")
Thanks in advance!
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.