I would be interested in some comments about the span loading.
Without ejection seats, what is the plan for sink rate after engine failure?
And the stated 700 pounds thrust with a gross of 2100 pounds is a 1/3 ratio.
What is the RC models thrust ratio?[/QUOTE
What is the planned sink rate? Well it will be higher than a C-152 but less than a real F-16. Seriously, It will be a tad steeper than my BD-5J, which has a best L/D airspeed of 110kts which gives it a 15/1 glide ratio. I'm guessing between 10/1 or maybe 12/1 glide ratio for the scale F-16. Tests will reveal more....
As far as power to weight goes, the RC F-16s will have much better performance (speed, acceleration, climb rate). But it should be a tad better than my -5J. My BD-5J has a 200lb thrust motor and grosses out at 1000lbs ~1/4. The 60% F-16 will be slightly better with 700 and 2100 respectively. Remember that's two people and full fuel. If you go solo and take enough to bomb around for an hour your max weight tops out at around 1400lbs and your thrust is 700lbs = 1/2.....much better numbers!!
That's the equivalent of my BD-5J bombing around with a 500lb thrust motor.... I can't even imagine. Cause it's a dog on take-off, but once the gear and flaps are up, it's a real screamer. The big joke with the BD-5 jet is that "it takes off like a tanker, and lands like a fighter" I would agree......
So it should do very well. The key is keeping it light. That's why I chose 60% scale, any higher and the performance drops off and puts the jet into a difficult position. You lose performance and may need to go to a lager motor which throws everything off. It gets bigger and heavier, and then that requires more fuel, and that makes it heavier, etc, etc. This consequently was the problem with the Viperjet and to a lesser degree the BD-10 they kept out growing themselves into unrealistic numbers which couldn't hold up. So again, it has to be as light as you can make it to get the right performance and still be able to afford to go out and fly it without going broke. Heavy airplane requires more thrust, more thrust burns more fuel, more fuel means more weight, and around you go..... I think you get the picture. We're at that sweet spot. If the empty weight breaks 1000lbs we're basically screwed unless the engine comes out pushing 800lbs of thrust at 40gals/hr at 80lbs of weight..... We'll have to wait and see, but the initial numbers look pretty good as long as we can keep with in the envelope. We saved almost 200 lbs by switching from carbon fiber to aluminum, so that was huge! I'm more comfortable with metal anyway having worked on my BD-5J. So that suits me just fine.