Sean McLeod

@bcoconni I see chapter 10 in Gas Turbine Performance - 2nd edition, P.P. Walsh & P. Fletcher, is all about windmilling. In particular information on the drag produced when windmilling,...

I've written some code to compare the N1 speeds based on using our current `qbar/10` approach to a model based on the chart (10.8) from Gas Turbine Performance - 2nd...

@bcoconni please take a look at the notebook above when you get a chance.

> Pull requests are welcome Will do, just getting more familiar with the code first. > However for quadcopters, the time step might need to be chosen in the 1000...

I've updated the allowable minimum propeller inertia to 1e-6 slug*ft2 from the current 1e-3 slug*ft2. The original value of 0.001 seemed potentially a bit arbitrary since both the minimum propeller...

@mvacanti has been busy implementing a new electric engine model and testing it with small UAS models, take a look at his detailed report - https://github.com/mvacanti/jsbsim/blob/pr-bldc-validation/SUAS_BLDC.md @rega0051 have you tested...

> changes in the BLDC model include introduction of a new lever arm in the prop model Yep I noticed that. Busy having a look at the references he mentioned...

@mvacanti, @rega0051, @bcoconni I haven't worked on any of the JSBSim propeller code in the past, so I'm not that familiar with it, so there may be something I'm missing,...

> expect that the Total N moment calculated by JSBSim (absent other external forces) to equal the sum all propeller torque multiplied by the distance of the propeller to the...

@mvacanti if you're confident the Cp is correct or close enough what about the moment of inertia of the drone, maybe it's off by a factor of 2 or so?