OuR Project R Rocket 94,000 ft Flight
OuR Project, by Phil Prior, Postflight Analysis of the OuR Project R Rocket Flight, by Charles E. Rogers, OuR Project: Data and Photo Chronology, by Jim Rosson, all published in High Power Rocketry magazine, Vol. 12, No. 6, July 1997, pages 29-33, 36-48, and 52-58.
The series of technical articles on the OuR Project R Rocket which were published in the July 1997 issue of High Power Rocketry magazine. The OuR Project R Rocket, which had a total impulse of 260,000 Newton-seconds, reached an altitude of 94,000 ft above ground level based on time to apogee measured from an onboard video which was transmitted to a ground station during the flight. Includes the technical article Postflight Analysis of the OuR Project R Rocket Flight, by Charles E. Rogers, on the postflight analysis of the rocket performance using time to apogee from the onboard video and the mid 1990's versions of the Rogers Aeroscience aerodynamic drag prediction and altitude prediction software.
Paul Robinson, one of the principal team members on the project, passed away in 2009. His obituary on the Rocketry Planet web site can be read using the link below.
RRS 50 Statute Mile Boosted Dart Project
700 Miles North and 50 Miles Up?, by David E. Crisalli, High Power Rocketry magazine, Vol. 12, No. 8, November 1997, pages 10-27.
The November 1997 High Power Rocketry magazine technical article on the Reaction Research Society (RRS) George Garboden boosted dart project, where the dart reached an estimated apogee altitude of 50 statute miles. The booster was tracked on Doppler radar to a burnout velocity of 4432 ft/sec (Mach 4.2). Based on the booster burnout/dart release velocity measured with the Doppler radar, and using a preflight prediction for drag coefficient versus Mach number for the dart, the trajectory simulation predicted apogee altitude for the dart was 258,000 ft above ground level, or 262,000 ft (49.67 statute miles) above sea level. The dart carried a video camera which transmitted the video images to a ground station. Based on photographic interpretation of the video still frames the dart reached an estimated apogee altitude between 48.3 and 56.0 statute miles above ground level.
Presented below is the Doppler radar data for the RRS 50 Statute Mile Boosted Dart flight.
The Doppler radar data includes velocity and altitude for the booster through burnout and the initial part of the booster coast, and for the dart after separation from the booster and the initial part of the dart coast. The booster burnout velocity was 4432 ft/sec (Mach 4.2). (Data courtesy of Bill Claybaugh.)
The onboard video from the dart, including the boost phase, separation of the dart, and the coast phase as the dart coasts to an estimated apogee altitude of 50 statute miles, can be viewed on the Rocketry Planet web site using the link below.