Jet Fuel Hoax

I have been contacted by several people asking me to comment on an unusual new theory, that jet aircraft do not need any fuel and actually use a free energy system.
See here for background: https://hpanwo-tv.blogspot.com/2019/06/flat-earth.html.
And: https://hpanwo-tv.blogspot.com/2019/08/cancer-cure-reply-to-secret-sources.html.
And: https://hpanwo-tv.blogspot.com/2015/02/energy-politics-and-ufos-2015.html.