About 60 years ago I built a model of a Javelin. My mate & I decided to see how fast it would go, we rigged a catapult the length of the cricket pitch & launched the thing.
We discovered that in order to keep the a/c in a straight & level attitude at increasing speeds we had to seriously increase the amount of down elevator. If the down elevator was not maintained the thing climbed & lost speed considerably.
We were about 13yrs old & learned a lot from such pissing about. Mainly in this case
"You can't have one without the other". The Javelin eventually broke up in exactly the same fashion as the full sized version did a few weeks later. If the AAIB had asked us we could have told them what would happen
