Those estimates are probably about right. Ardupilot is 700k LOC, and that’s for
something uncertified where the penalty for failure is a few hundred dollars
and embarrassment on youtube.
Of course, people here will say that AGC was ~200k and Shuttle was ~400k. You
may buy more hardware so you can afford to run lots of code, or you can pay
more programmers so you can have tighter, more efficient code.
On May 31, 2019, at 4:21 PM, Brian Feeney
<alaiadesign@xxxxxxxxx<mailto:alaiadesign@xxxxxxxxx>> wrote:
I'm trying to get an understanding of the number of lines of code that may be
required for a Fly By Wire Flight Control System for a manned Air / Spacecraft.
(runway capable - it has wings). Also the magnitude from basically it works to
fully tested for commercial ops.
This would include fully automated flight (unmanned) from runway takeoff to
runway landing. I will add it also has the capability to land vertically.
I can't find any applicable references online (so far) other than the 8 million
plus LOC for the F35 and 18 million for the Boeing 787 that seams rather
overkill?
I was contemplating the use of a successful basic, autonomous small UAV off the
shelf system that does both runway and VTOL flight as a starting point and
build out and up from there. There are also several early successful eVTOL
flights taking place that are at least a reference compared to the heavy metal
FBW aircraft.
Experienced input fully appreciated. This is to develop a phased budget ...
Cheers,
Brian Feeney
