If a plane can fly, it because it's wing create lift and this lift is created when the plane go forward. However a minimal lift force is required to make the plane take-off and this minimal lift requires a minimal speed. The minimal speed to keep the plane in the air is called the stall speed. If a plane is not going at the stall speed ,the plane start stalling because it's wings or the total wing surface does not produce the minimal lift to keep the plane in the air or make it take-off. Obviously if the plane start stalling the pilot will naturally loose the control until the plane recover that speed but what if you can still have the control of the plane even the plane is stalling ? The ability to fly beyond the stall is called the supermaneuverability.
In the expression "supermaneuverability" we have: "super" and "maneuverability" Like I've said in my previous forum, the maneuverability is the rate of how the plane can its AOA (Angle Of Attack).When an object is in the air 4 different forces are applied to it: the lift, the drag, the thrust and the weight but in the case of the plane the lift is strong enough to compensate the weight effect.
When the plane start maneuvering, it's start changing its AOA which mean that the plane at this moment precisely does not change its flight path only its attitude in flight has changed. It's mean that the nose of the plane is not pointing anymore the flight path and the thrust is not going in the direction of the flight path. At this moment the plane is exposing more of his body to the flight path which of course increase the drag and knowing that the thrust is not going at the opposite direction of the drag anymore the plane will obviously loose energy. The quantity of energy lost depend of the type of maneuver the plane is going to execute. In fact, instead of losing energy; a plane gain energy after a diving maneuver.
But to make the plane fly beyond the stall, it should be equipped of the feature that allow it: this feature is the TVC (Thrust Vector Control). In fact, the Thrust vector control is the feature which improve the pointing rate of the nose making the plane more agile, more maneuverable and allowe the plane to be controlled even stalling.Comparatively to
wing surfaces, the TVC don't add lift which is neccessary to pull G so when the plane maneuvering the wing surface pull G and TVC extend it which reduce the amount of G the pilot should sustain. Comparatively to a normal plane, the TVC keep the nozzle of the engine in the direction of the flight path when it's AOA is changing which make the plane loose less energy than it should. With the TVC, the pilot have less luck to make his plane stalling but also allow the plane to perform move like the Kulbit and the Pugachev's cobra
Pls send feedback I could be wrong :) and we can debate like gentlemen sharing knowledge to each other
HarryBen47
I suggest that you look more into this, some of your statements aren't wrong but aren't right too like "rate of the nose making the plane more agile, more maneuverable and allow the plane to be controlled even stalling."( putting agility and maneuverability in the same sentence isn't right- most TVC was designed to achieve maneuverability not agility-) and "exposing more of his body to the flight path which of course increase the drag and knowing that the thrust is not going at the opposite direction of the drag anymore the plane will obviously loose energy"
( The thrust force wasn't terminated,So what did it do when its vector changed?????- For example If you were pushing against me and I suddenly let go and pushed you to the west you will continue to move in your path but you'll veer to the west- why doesn't the aircraft does that when loosing its energy?), Also Most of the Thrust vectoring Fighter jets can't achieve what the Su-35S can do- Do you know why?-because its 3-d thrust vectoring were backed up with an insane thrust force,Canards and a Aerodynamic maneuverable body.
furthermore, this doesn't explain these crucial Points which is a base of the Supermaneuverability.
I suggest you read about these things "Aerodynamic maneuverability" ------"Herbst maneuver (commonly known as the J-turn)" ----- "The Canards Functionality on some planes like the Gripen"
@EternalDarkness oh thanks ED very helpful
MiG-29 and Su-27 are famous for pulling cobra without vectoring. You should explain that in this post.
what about superagility?
Finally, a chart that says "lift thrust drag weight" and not "Lift thrust drag Gravity"
@HarryBen47 long story short, why doesn't the plane gain altitude while doing so( if it doesn't have thrust vectoring) like the MiG-29?
And about the example ,it a poor explanation about Net force,and for the references,CAnard and Herbst can be found on Wikipedia, The aerodynamic maneuverability look at Page 12 the 4th point on this PDF,(The models are in Page 4)
you might consider reading it, you won't regret it
The Swedish Saab J35 was also able to perform a Pugachev’s Cobra (they even claim to have done it before Russia, too.)
@EternalDarkness And F-35 just done pedal turn w/o thrust vectoring in 2017 Paris Air show.
And ofc, the communist bloc (most notably the Chinese Communists) were quick to denounce it.
@Mmdben thanx for your reply but can you rephrase the part "if you were pushing...its energy" cause I still don't get it but if you can send me some links about your reference it might be helpful
@HarryBen47 no problem.