checksixx wrote:
Lockheed Martin published a confirmed unclassified supercruise speed of 1.78 Mach....I would venture that the actual number was 'tuned' down for public consumption as that is usually how its done. I asked a pilot on the flightline once how fast it was and he said, "I know you've got a clearance but you don't need to know...well put it this way, I've supercruised in this thing at the highest speed I've ever personally took the '15." That says a lot for the jet...Check
I used to chat with a former F-15C pilot who pointed out how rare it was for ANY Eagle driver to get above Mach 2.0, let alone the jet's maximum speed of approximately Mach 2.5. This is because the F-15C almost never flies in a clean configuration. Even in the rare cases it does, the pilot will almost never have an excuse to do Mach 2+. It's entirely possible this F-15 pilot you spoke to never got his jet above Mach 2. It's even possible he never got above Mach 1.78. Seriously... why would an F-15 need to go that fast? There are only a few special situations that would necessitate reaching such high speeds... even in wartime.