Originally Posted by
Atlas Shrugged
Not really......
A37575, you have to remember that there is very little, if any, reverse thrust. Most reversers only affect the fan air, not the flow from the core. Whilst the fan flow might generate some reverse, the core is still pushing you along. All reverse really does in an airliner is cancel out the core thrust, and not much more. It does destroy the lift generated by the wings and may dissipate any water that might be on the runway - both help sit the aircraft down on the ground a bit more firmly - but that's about it.
80% of a modern, high by-pass engine's thrust comes from the fan. The core engine is really only there to drive the fan, the gearboxes for the ancillary pumps/generators etc. , and provide bleed air for air conditioning/anti-icing. On that basis Fan T/Rev thrust significantly cancels out Core Thrust during application of of T/Rev.