News for hackers. Stuff that matters.

A comment on Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-Breaking Speeds. Parent comment

Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by dogma1138 on Tuesday February 19, 2019 @05:02PM (#19203300)
It’s likely less than the reading error in most speedometers including those which are used for autonomous vehicles unless you are writing a guidance system for bombs or attempting to land on another planet that’s pretty negligible.
[ Parent | on HN ]
Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by ummonk on Tuesday February 19, 2019 @08:14PM (#19204723)
Given that the ground speed was likely drawn from gps data, which should have velocity readings more accurate than 1mph (particularly for an airborne gps unit), the choice of calculation method for ground speed does make a difference.
[ Parent | on HN ]