RE: LANDING BEFORE EMPTY ?
When I performed my first landing, it was a dead stick landing. It had to be dead stick because it was a high performance sailplane. Flying a sailplane is the very best way to learn how to fly. There is no such thing as a go-around. The question of how to avoid D/S landings has certainly been answered but the correct procedure to follow has not been mentioned.
Maybe I should present some vital info and ideas at this point.
I have watched many people fly at different fields all over the US and Australia. very few people that I have seen have ever flown their plane correctly or safely. (Safely???)
IMO all RC pilots should adopt the same procedure for flying and landing as the full size pilots do. This means taking off and discover how your plane reacts and handles in any situation. The plane should be flown high, about 100 feet or so and then the motor set to idle. Then find the most ideal angle for the glide path so the plane will decend at a safe rate without being too slow (and stall) or too fast (and overshoot). Once the glide path is established, go back up and then start the glide, now enter a 90 deg. turn of about 20 foot radius. Watch the plane closely and see how much height is lost in the turn. Can a turn be done where the speed does not increase? You should be able to turn with no speed increase and with a minimum of height lost. Height will always be lost faster in a gliding turn so watch your plane closely.
As with all landings, the plane (full size or RC) must be positioned to fly the correct landing circuit. This means entering the circut at the top end of the Downwing Leg and being at the correct height. Fly downwind to the turn for the Base Leg and do a smooth 90 deg. turn. Continue on to the point where you will turn onto Final Approach. The secret to a good (perfect) landing is to set it up correctly. This means knowing your planes flight characteristics intimately. This knowledge only comes from lots of practice.
Setting up for landing does not just mean flying a good looking circuit. It means knowing how high to be when you make that turn onto the Base Leg. It also means where to position the plane to make that important turn.
The next turn is onto the Final Leg. Again it is essential to know what height you should be as you start the turn and when to start so the completed turn will align the plane in the center of the runway. This is all relatively easy to do (?) when the engine is running at idle. You should be able to fly this same landing circuit with the plane being dead stick. So you also need to know how well the plane flies dead stick and gliding. By positioning the plane correctly throughout the circuit and landing approach you will never find yourself landing in a swamp or in the rough or anywhere you shouldn't be.
Nothing looks more beautiful that a perfect landing that results from a carefully planed and executed circuit to the Final Approach. If you think you can fly and do it easily, then go and fly a few circuits at a constant height of 20 or 25 feet. Make every turn a 90 deg. precision turn and don't deviate more than 1 foot up or down thru the flight; do the same thing but fly 3 figure 8s'. The most common and the worst mistake that I witness is seeing pilots fly a 180 deg. turn at each end of the circuit. Such flying teaches you nothing about precision flying. The day will come when you simply must fly a precision flight path so practice the correct turns.
Good luck and good flying.
Wedge