EZ-Rocket: Breaking Records in Rocket-Powered Aviation
The pursuit of high-speed flight has always pushed the boundaries of aerospace engineering. Among the most ambitious projects in this field was the EZ-Rocket, a pioneering rocketplane designed to demonstrate the viability of reusable, rocket-powered flight. By utilizing liquid oxygen (LOX)—a cryogenic propellant—the EZ-Rocket transitioned from a conceptual engine test to a record-breaking aircraft that redefined what ground-launched rocket planes could achieve.
Key Facts
- First Engine Firing: October 8, 2000, using an XCOR Aerospace LOX-powered engine.
- Distance Record: Set a point-to-point record of 16 km from Mojave to California City on December 3, 2005.
- Historic Mail Delivery: Performed the first official delivery of U.S. Mail by a rocket-powered aircraft.
- Notable Pilots: Flown by aviation legends Dick Rutan, Mike Melvill, and Rick Searfoss.
- Major Award: Dick Rutan received the 2005 Louis Blériot Medal from the FAI for his achievements.
The Evolution of the EZ-Rocket
The journey of the EZ-Rocket began with the successful firing of an XCOR Aerospace engine on October 8, 2000. This engine relied on LOX (liquid oxygen), which serves as the oxidizer necessary for combustion in the thin atmosphere of high altitudes. Following the engine's success, the aircraft entered its flight testing phase in July 2001, initially operating in a single-engine configuration piloted by Dick Rutan.
By October 3, 2001, the aircraft evolved into a twin-engine configuration, increasing its power and stability. A critical technical milestone was reached on January 24, 2002, when pilot Mike Melvill successfully performed the first rocketplane inflight engine relight, proving that the aircraft could restart its propulsion system while airborne.
Setting Global Aviation Benchmarks
Throughout 2002, the EZ-Rocket achieved a series of world firsts. On June 24, it performed the first touch-and-go—a maneuver where an aircraft lands and takes off again without coming to a full stop—ever completed by a rocket-powered aircraft. Shortly after, on July 11, it became the first rocketplane since 1945 to fly twice in a single day.
The aircraft also brought rocket technology to the public eye. In July 2002, it performed the first two rocketplane air show flights in the United States at the EAA AirVenture Oshkosh event.
The Path to the Distance Record
After a three-year retirement, the EZ-Rocket returned to the skies in August 2005 for requalification flights piloted by Dick Rutan and Rick Searfoss. To prepare for a world record attempt, the team conducted an altitude validation flight on September 1, 2005, reaching 11,546 feet. This flight confirmed the aircraft had the range to travel from Mojave to California City and back without needing to relight the engines.
The culmination of these efforts occurred on December 3, 2005. Dick Rutan piloted the EZ-Rocket from Mojave to California City, covering 16 km in just under ten minutes. This flight set the point-to-point distance record for a ground-launched, rocket-powered aircraft and marked the first time the U.S. Mail was officially delivered via rocket power. The achievement was capped off on December 15, 2005, when Rick Searfoss completed the first cross-country return flight of a rocket-powered aircraft in the U.S.
EZ-Rocket Milestone Summary
| Date | Milestone | Key Detail |
|---|---|---|
| Oct 8, 2000 | First Engine Firing | XCOR Aerospace LOX-powered engine |
| Jan 24, 2002 | Inflight Relight | First successful restart in mid-air |
| Jun 24, 2002 | Touch-and-Go | World record for rocket-powered aircraft |
| Dec 3, 2005 | Distance Record | 16 km from Mojave to California City |
| Dec 15, 2005 | Return Flight | First U.S. cross-country rocketplane return |
Frequently Asked Questions
What is a LOX-powered engine?
A LOX-powered engine uses liquid oxygen as an oxidizer, allowing the rocket to burn fuel efficiently without relying on oxygen from the surrounding atmosphere.
Who were the primary pilots of the EZ-Rocket?
The aircraft was primarily flown by Dick Rutan, Mike Melvill, and Rick Searfoss.
What distance record did the EZ-Rocket set?
On December 3, 2005, it set the point-to-point distance record for a ground-launched, rocket-powered aircraft by flying 16 km from Mojave to California City.
What was the significance of the December 3, 2005 flight?
Beyond the distance record, this flight marked the first official delivery of U.S. Mail by a rocket-powered aircraft and earned Dick Rutan the Louis Blériot Medal.
Did the EZ-Rocket perform at public events?
Yes, it performed the first rocketplane air show flights in the United States at the 2002 EAA AirVenture Oshkosh and later at the Countdown to X PRIZE Cup in Las Cruces.