ORIGINAL: JohnBuckner
As always when you are talking a technical field, language becomes very fluid and is constantly changing. In the full scale world I believe the word spoilers was used in connection to systems such as the P-61 as well a virtually ever glider/sailplane still to this day but all of these typically were never mixed ailerons and spoilers. The were normally separate surfaces positioned near mid cord and they killed lift to provide increased rate of descent or used differentially to provide roll control. The P-61 not only had these for primary roll control but also small conventional ailerons to provide primarily some tactile pilot feedback on the controls, something pure differential spoilers were/are poor at.
Spoilerons is something that I cannot think of a single application in the full scale world but its early this morning
and the pure use of mixed spoilers is OK but even the spoiler function is poor when used in this manner as there is excessive pitching when applied. This is something pure spoilers mounted near mid cord do not do. Those are a joy to use both in full scale and RC true spoilers do not effect any pitching at all.
John
The spoilerons on the p-61 weren't used to dump lift, they were used to induce roll. One spoileron would go up and the other would remain flush with the top of the wing. The P-61 also had very small ailerons, but the spoilerons were the primary roll control. Some modern planes use this arrangement too, and some of them have no ailerons at all, but I can't offhand recall particular planes (maybe MD-11?). In any event, this is very different from an arrangement in which both ailerons can be raised at the same time, which seems to be what people in this thread mean by spoilerons. It's also very different from ordinary spoilers, as on the gliders you mention, where both go up at the same time.