The Model-Prime Armor can reach the speed of sound right from lift-off, and additional thrusters can be formed from the suit's scales to reach higher speeds. Flight while in stealth mode appears to leave no repulsor energy trail, so it could be powered by other means.
Offensive Powers
The Model-Prime Armor features regular
Iron Man Armor weaponry, namely
repulsors,
[4] a unibeam,
[6] and a micro-missile array.
[20] The repulsors have multi-vibrational capabilities, being able to damage beings with
phasing powers.
[21] When the armor was retooled by Victor von Doom, he added two more unibeams in the chest, making the suit capable of firing a tribeam at once.
[22]
Different types of weaponry can be created on the spot thanks to the armor's primary shape-shifting function. The scales on the surface of the suit can be commanded to shape themselves into blades, guns, cannons, etc.
[4] The armor can also create a "zero-point energy bubble" which drains an excessive amount of energy. This energy bubble can be used to attack enemies with a shockwave energy blast
[18] or as a force-field to contain them.
[23] In addition to the commonplace increase in strength, the armor's shape-shifting features can enhance its user's strength even further by increasing in mass, giving the suit a bulky appearance similar to a
Hulkbuster Armor.
Defensive Powers
In addition to the extra-durable shell protecting its user, the Model-Prime Armor has shown to be completely immune to different types of powerful attacks, namely sonic attacks
[4] and EMPs,
[24] with such efficiency that its wearer might not even react to them.
[4] The suit can also resist powerful blasts of energy that can destroy entire buildings,
[23] and repeated blows from the likes of
Captain Marvel.
[25] The armor also protects against intangibility, preventing objects and individuals like the
Vision from phasing through it.
[26]
The division of the suit's surface into individual tiles allows for fast repairing of damaged areas, as the scales simply realign themselves.
[25] The extent of this ability allows the armor to rapidly rebuild itself even after being broken down in its entirety.
[17]
The suit also possesses a cloaking mode that renders it invisible while its user remains in sight, giving its wearer the ability to have the armor's protection while deceivingly appearing to be completely defenseless.
[16] The suit's multi-functionality allows it to render its entire surface black for stealth missions.
[17] Additionally, magnetic force-fields can be used to attract objects at will.
[23]
In case the wearer's life is in extreme risk, the Model-Prime Armor possesses an emergency protocol which consists of causing the suit to burst and separate from Tony while the device on his wrist flies him away to safety. The Model-Prime Armor remains in autonomic control until its user can access its remote interface and get hold of the armor.
http://marvel.wikia.com/wiki/Iron_Man_Armor_Model_51
