America's hypersonic jet now expected to start flight tests this year

Atlanta-based aviation startup Hermeus has successfully completed taxi testing with their Iron Horse technology demonstrator, clearing the path for them to begin flight testing later this year. **Correction: Quarterhorse Mk 0 is nicknamed "Iron Bird," not "Iron Horse."** 📱 Follow Sandboxx News on social Twitter: https://twitter.com/sandboxxnews Instagram: https://instagram.com/sandboxxnews Facebook: https://facebook.com/sandboxxnews TikTok: https://www.tiktok.com/@sandboxxnews 📱 Follow Alex Hollings on social Twitter: https://twitter.com/AlexHollings52 Instagram: https://www.instagram.com/alexhollings52 Facebook: https://www.facebook.com/AlexHollings... TikTok: https://www.tiktok.com/alexhollings52