Expert: Ray Wilkinson - 5/20/2007

Question
what is the highest thrust to weight ratio on a military fighter?

thank you,
Riley

Answer
Hi

I don't know the exact answer, but here goes. Until recently, the only fighter that had a thrust:weight ratio greater than 1 was the Harrier, and even then not at maximum take-off weight - the Harrier can't take off vertically with a full load. Even lightweight fighters like the F16 are significantly less than 1 at max weight. However, modern fighters tend to be higher as engine performance improves and weight is controlled. Wing area is also increasing to improve turn performance.

So my answer would be probably a little better than 1, and my guess would be that the USMC Harrier AV-8B would be the highest - lightly loaded it has a thrust:weight ratio of about 1.3, but it's still less than 1 at max take-off weight.

I hope this answers your question.

Regards

Ray