Constellations, Launch, New Space and more…
DARPA’s HTV-2 Hypersonic Vehicle Pealed Apart After 3 Minutes at Mach 20

A seven-month investigation into the failure of DARPA’s Hypersonic Technology Vehicle (HTV-2) has concluded that a series of shockwaves caused  unexpectedly large sections of the aeroshell to peel away after the experimental craft spent nearly three minutes traveling at Mach 20.

The flight successfully demonstrated stable aerodynamically-controlled flight at speeds up to Mach 20 (twenty times the speed of sound) for nearly three minutes. Approximately nine minutes into the test flight, the vehicle experienced a series of shocks culminating in an anomaly, which prompted the autonomous flight safety system to use the vehicle’s aerodynamic systems to make a controlled descent and splashdown into the ocean.


  • Parabolic Arc
  • April 25, 2012
DARPA Seeks Funding for New Hypersonic Program

DARPA is seeking FY 2013 funds to continue work on hypersonic vehicles, Aviation Week reports: New starts planned for 2013 include the Collaborative Hypersonic Research (CHR) program to demonstrate a boost-glide vehicle as a precursor to a tactical long-range strike weapon capable of launch on a 21-in. or larger booster. Darpa is seeking $11 million in 2013 to start the “flight experiment-intensive” CHR program, which is intended to build on […]

  • Parabolic Arc
  • February 15, 2012
DARPA IDs Flaw in Falcon HTV-2, Will Test Again Next Year

DARPA Falcon hypersonic technology vehicle (HTV)


Following an extensive six-month review, the independent Engineering Review Board (ERB) chartered to examine data collected during the Falcon Hypersonic Technology Vehicle’s (HTV-2) first flight has completed its review. The ERB concluded that the anomaly resulted from flight control authority limitations to operate at the angle of attack the vehicle was programmed to fly for the speed and altitude of the flight.


  • Parabolic Arc
  • November 17, 2010