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Target-type thrust reversal (also called bucket thrust reversal or clamshell thrust reversal [1]) is a deceleration method when an aircraft lands. Like other types of thrust reversals, it temporarily diverts the engine exhaust forward to provide deceleration. This type of thrust-reverser is suitable for engines of 3,000 lbf (13 kN) or greater ...
There are three common types of thrust reversing systems used on jet engines: the target, clam-shell, and cold stream systems. Some propeller-driven aircraft equipped with variable-pitch propellers can reverse thrust by changing the pitch of their propeller blades. Most commercial jetliners have such devices, and it also has applications in ...
Closed chain exercises are often compound movements, that generally incur compressive forces, while open-chain exercises are often isolation movements that promote more shearing forces. [ 1 ] CKC exercises involve more than one muscle group and joint simultaneously rather than concentrating solely on one, as many OKC exercises do (single-joint ...
The clamshell exercise can be a simple, effective movement to warm up for lower body workouts and to target the gluteus medius muscle. The clamshell exercise can be a simple, effective movement to ...
The rear delt raise, also known as the rear deltoid raise, or rear shoulder raise is an exercise in weight training. This exercise is an isolation exercise that heavily works the posterior deltoid muscle. The movement is primarily limited to the two shoulder joints: the glenohumeral joint and the scapulothoracic joint.
The bench press or chest press is a weight training exercise where a person presses a weight upwards while lying horizontally on a weight training bench. The bench press is a compound movement, with the primary muscles involved being the pectoralis major, the anterior deltoids, and the triceps brachii. Other muscles located in the back, legs ...
The inverted fly (also known as a bent-over lateral raise, reverse fly, or rear delt fly) works the posterior deltoid. This movement is the opposite of a chest fly. The exercise is performed with the torso parallel to the ground, facing down, with the hands in front of the face.
The inverted row is an exercise in calisthenics. It primarily works the muscles of the upper back—the trapezius and latissimus dorsi —as well as the biceps as a secondary muscle group. The supine row is normally carried out in three to five sets, but repetitions depend on the type of training a lifter is using to make their required gains.