A launch escape system (LES) or launch abort system (LAS) is a crew-safety system connected to a space capsule. It is used in the event of a critical emergency to quickly separate the capsule from its launch vehicle in case of an emergency requiring the abort of the launch, such as an impending explosion.

发射逃逸系统（Launch escape system，LES），是载人运载火箭或载人飞船上，用于在运载火箭出现致命故障时，使航天员得以离开故障火箭的系统。 发射逃逸系统，一般常见的形式有：弹射座椅和整体逃逸。

A launch pad escape system for human spaceflight is one of those things that everyone hopes they will never need but is critical for every manned space program. Since men were first put into space in the early 1960s, the need for such an Emergency …

Dragon is equipped with Draco thrusters that allow Dragon to maneuver while on orbit and 8 SuperDracos that power the spacecraft’s launch escape system. The launch abort system is a crew safety system built into the Dragon spacecraft, used to quickly separate Dragon from Falcon 9 in the unlikely event of an emergency.

2024年4月14日 · A Launch Escape System (LES) is a crucial safety feature designed to protect astronauts in the event of an emergency during the launch phase of a spacecraft. It is a system that can quickly propel the crew capsule away from the rocket in case of a malfunction or catastrophic failure.

The Apollo launch escape system (LES) was designed to provide a positive means of crew escape if booster failure occurred during the initial phase of launch. The system had to achieve sufficient altitude for deployment of the command module (CM) parachutes and to ensure safe lateral separation.

2019年6月11日 · The Orion launch abort system also offers the highest thrust and acceleration escape system ever tested. Orion’s puller-style system with the tower above the spacecraft allows for considerable control as well, enabling the LAS to move quickly and away from the 8.8 million pounds of thrust from the SLS rocket during an abort.

2020年11月14日 · Rather than use a detachable launch escape system, SpaceX’s Crew Dragon capsule has emergency escape engines built directly into the craft. Allowing it to flee potential danger at the drop of a...

2024年2月27日 · The abort motor generates 400,000 pounds of thrust, making Orion’s LAS the highest acceleration escape system ever tested. The puller-style system with the tower above the spacecraft is the first of its kind capable of controlled orientation after separating from the rocket.

The launch escape system goes into operation when thrust from two or more engines of the S-IC are lost, or the flight angle (pitch, yaw, roll) deviates beyond set parameters. When a emergency is detected after the launch within 100 seconds, the LES works automatically, drawing the CM from the Saturn rocket.