# Ultrafast, air-breathing rocket engine moves a step closer!
**URL:** https://forum.kirupa.com/t/ultrafast-air-breathing-rocket-engine-moves-a-step-closer/639678
**Category:** news
**Created:** [April 18, 2019, 3:49am UTC](https://forum.kirupa.com/t/ultrafast-air-breathing-rocket-engine-moves-a-step-closer/639678 "2019-04-18T03:49:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@kirupa](https://forum.kirupa.com/u/kirupa)
#### Post date: [April 18, 2019, 3:49am UTC](https://forum.kirupa.com/t/ultrafast-air-breathing-rocket-engine-moves-a-step-closer/639678/1 "2019-04-18T03:49:19Z")
> **[Ultrafast rocket engine could fly at Mach 25](http://www.cnn.com/travel/article/air-breathing-rocket-scli-intl-gbr-scn/)**
>
> UK company Reaction Engines conducts a successful test of a key part of its Synergetic Air-Breathing Rocket Engine (SABRE), which could fly in space at Mach 25.
I always wondered why we don’t have faster and faster airplanes. While I can’t complain about being half-way across the world in around 10 hours, it would be nice if that were cut down to something like…1 hour 🚀
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### Author:  [@Wayne](https://forum.kirupa.com/u/Wayne)
#### Post date: [April 18, 2019, 11:13am UTC](https://forum.kirupa.com/t/ultrafast-air-breathing-rocket-engine-moves-a-step-closer/639678/2 "2019-04-18T11:13:21Z")
space x is already planning this.