Contrails are made from high altitude water vapour condensing round black soot being emmitted from jet engines.

22nd April 2021 The UK Government have set a legally binding target to cut the countries Greenhouse gas emissions by 78% by 2035 compared to 1990 levels. The sixth Carbon Budget will incorporate the UK's share of international aviation emissions in its calculations. Put simply, 80% of planes have to be crushed and 80% of Heathrow bulldozed today (ie. Bulldoze Terminals 2, 3 and 4 and carparks). No If's, no But's, just do it!

Heathrow Terminal 2 to be powered by woodchip biomass – with dubious and extravagant “green” claims

The winter of 2018 was colder than previous years which slightly increased the gas and oil consumption for heating in some areas. We also experienced power supply issues over several weeks that required the use of back-up diesel power generation.

Aviation Fuel Facts

- A “standard” 747 in mid-flight will burn approximately 4 litres of fuel every second which, based on a cruising speed of 565 mph, means consumption of 25 litres per mile (giving a fuel economy range of 0.18 miles per gallon!).

- A 747 has the capacity to carry a staggering 220,000 litres and this only gives it a distance range of around 8,500 miles - not enough to get to Australia from London non-stop.

- A 747 with a full tank of fuel, adds an incredible 175 tonnes to the plane’s payload.

- Total consumption of jet fuel in the UK is an impressive 15bn litres per annum, but an incredible 55% of this volume goes through Heathrow – that’s over 22million litres per day.

- All of Heathrow’s jet fuel comes in by pipeline - either direct from refineries (Immingham, Fawley and Stanlow can all pump product directly into Heathrow’s fuel farm) or via import pipelines from the Thames estuary (over 60% of UK jet fuel is now imported).

- Once it arrives at Heathrow, the Avtur is stored in the airport tank before being further distributed via its 80 miles of pipelines. This incredible underground “hydrant” system runs the length and breadth of the airport and has multiple fuelling points to allow the airport’s mobile bowsers to connect up and fuel planes across the whole Heathrow complex.

(Ack:- https://www.rix.co.uk/blog/why-do-planes-use-kerosene)