Hypersonic

The United States Air Force (USAF) has released the results of last August’s third test of the X-51a Waverider, which resulted in the crash of the unmanned scramjet demonstrator. At a press teleconference featuring the Program Manager for Air Force Research Laboratory, Charles Brink, it was confirmed that a malfunctioning fin was the cause of the crash. However, engineers are confident of correcting the fault in time for the fourth test flight scheduled for (Northern Hemisphere) late spring or early summer of next year.  Read More

Wright Patterson AFB has confirmed in an official press release that Tuesday’s test of the Waverider X-51A unmanned hypersonic missile has failed. Launched from a B-52 bomber over Point Mugu Naval Air Warfare Center Sea Range at 11:36 AM PST, the separation from the bomber and ignition of the X-51A’s rocket booster went as planned. However, 16 seconds into the flight a fault occurred in one of the missile’s control fins before the scramjet could start and the X-51A was today officially reported as "lost." At present, there are no further official details, but the New York Daily News reports that the missile crashed into the Pacific Ocean while NBC News states that the X-51A broke up in flight and fell into the ocean "in pieces."  Read More

Legendary science fiction author Sir Arthur C. Clarke (1917-2008) scored another hit in the prediction department on Monday, July 23, 2012 when NASA tested an inflatable heat shield that he foresaw back in the 1980s. The test of the Inflatable Re-entry Vehicle Experiment (IRVE-3) was launched by rocket into a suborbital trajectory from NASA’s Wallops Flight Facility on Wallops Island, VA. The unmanned vehicle reached velocities of up to 7,600 mph (12,231 kph), yet was protected from atmospheric heating by the mushroom-shaped shield.  Read More

DARPA has repeatedly indicated an interest in developing hypersonic aircraft and weapons systems which are capable of Mach-20 speeds and thus able to reach any region of the planet within an hour. To this end, the agency has announced its new Integrated Hypersonics (IH) program, which draws upon previous research and aims to create a hypersonic X-plane (HX) ready for testing by 2016.  Read More

Your spacecraft is falling from the skies at an initial speed of Mach 25. Your reentry heat shield, that has to survive a 7,800 degrees Celsius (14,072° F) plasma shock, is a finely tuned hi-tech amalgam of refractory metals and carbides and reinforced carbon-carbon ablation materials. Care to replace your mighty heat shield with a balloon? Not likely! But that is exactly what NASA is considering.  Read More

Following the two test flights of the unmanned Falcon Hypersonic Technology Vehicle (HTV-2) earlier this year, both of which ended prematurely with the vehicle making a “controlled descent” into the Pacific Ocean, the U.S. Army Space and Missile Defense Command/Army Forces Strategic Command last week conducted the first test flight of the Advanced Hypersonic Weapon (AHW) concept.  Read More

The first – and perhaps only – video footage of the ill-fated second test-flight of DARPA’s Falcon Hypersonic Technology Vehicle 2 (HTV-2) has been released. Shot with a handheld camera by a crewmember aboard the Pacific Tracker, the first monitoring vessel able to visually track the HTV’s initial entry into the atmosphere, the video shows the HTV-2 hurtling across the sky on August 11 at Mach 20 before its “controlled descent” into the Pacific Ocean.  Read More

DARPA has confirmed the splash down of its unmanned Falcon Hypersonic Technology Vehicle (HTV-2) following the hypersonic vehicle’s second test flight on August 11. While a “controlled descent” generally refers to a human directing and guiding an aircraft to an unscheduled landing, safety systems onboard the HTV-2 kicked in after an anomaly was detected a little over nine minutes into the test flight and autonomously directed it into the ocean.  Read More

On Thursday, DARPA's unmanned Falcon Hypersonic Technology Vehicle-2 (HTV-2) was launched from Vandenberg Air Force Base in California aboard an Air Force Minotaur IV rocket, which inserted the aircraft into the desired trajectory. After separation from the rocket, the vehicle transitioned to Mach 20 (approximately 13,000 mph/21,000 km/h) aerodynamic flight but a little after nine minutes of monitored flight the signal from the vehicle was lost with initial indications that the second test flight has ended in the same way as the first - with a crash into the Pacific Ocean.  Read More