Recent Flight Test Results of the Joint CIAM-NASA Mach 6.5 Scramjet Flight Program

Under a contract with NASA, a joint Central Institute of Aviation Motors (CIAM) and NASA team recently conducted the fourth flight test of a dual-mode scramjet aboard the CIAM Hypersonic Flying Laboratory, 'Kholod'. With an aim test Mach 6.5 objective, the successful launch was conducted at the Sary Shagan test range in central Kazakstan on February 12, 1998. Ground-launch, rocket boosted by a modified Russian SA5 missile, the redesigned scramjet was accelerated to a new maximum velocity greater than Mach 6.4. This launch allowed for the measurement of the fully supersonic combustion mode under actual flight conditions. The primary program objective was the flight-to-ground correlation of measured data with preflight analysis and wind-tunnel tests in Russia and potentially in the United States. This paper describes the development and objectives of the program as well as the technical details of the scramjet and SA5 redesign to achieve the Mach 6.5 aim test condition. An overview of the launch operation is also given. Finally, preliminary flight test results are presented and discussed

Rapport I. b-1. Contribution à l’étude du transport de fuel lourd à longue distance en mélange avec de l’eau et avec utilisation d’agents détersifs

The method generally used so far for the piping of crude oil with a high solidification point or very viscous oil products has been either by heating the oil or by the addition of light hydrocarbons for recovery on arrival. It now seems possible to consider this type of transport by mixing the crude oil with water, and in the case of very viscous products, by mixing them with very diluted anion agent solutions. Such methods require several hundred times less power, than hitherto.Jusqu’à présent le transport par pipe-lines des pétroles bruts dont la température de point de figeage est élevée, ou de produits du pétrole très visqueux, a été réalisé, soit par réchauffage, soit par addition d’hydrocarbures légers qui doivent être récupérés à l’arrivée. Il semble possible actuellement d’envisager un tel transport en utilisant pour les pétroles bruts le mélange avec l’eau, et, pour les produits du pétrole très visqueux, le mélange avec des solutions étendues d’un agent anionique. Ces procédés permettent d’abaisser les dépenses d’énergie de plusieurs centaines de fois.Roudakov Georges. Rapport I. b-1. Contribution à l’étude du transport de fuel lourd à longue distance en mélange avec de l’eau et avec utilisation d’agents détersifs. In: Le rôle de la mécanique des fluides dans les progrès récents des techniques. 1967

Member, AIAA

Under a contract with NASA, a joint Central Institute of Aviation Motors (CIAM) and NASA team is preparing to conduct the fourth flight test of a dual-mode scramjet aboard the CIAM Hypersonic Flying Laboratory, "Kholod." Ground-launch, rocket boosted by a modified Russian SA-5 missile, the redesigned scramjet is to be accelerated to a new maximum velocity of Mach 6.5. This should allow for the first-time measurement of the fully supersonic combustion mode. The primary program objective is the flight-to-ground correlation of measured data with preflight analysis and wind-tunnel tests in Russia and potentially in the United States. This paper describes the development and objectives of the program as well as the technical details of the scramjet and SA-5 redesign to achieve the Mach 6.5 aim test condition. The purpose and value of a joint Russian-American program to attain overall hypersonic air-breathing technology objectives are discussed. Finally, the current project status and schedu..

CIAM/NASA Mach 6.5 Scramjet Flight and Ground Test

The Russian Central Institute of Aviation Motors (CIAM) performed a flight test of a CIAM-designed, hydrogen-cooled/fueled dual-mode scramjet engine over a Mach number range of approximately 3.5 to 6.4 on February 12, 1998, at the Sary Shagan test range in Kazakhstan. This rocket-boosted, captive-carry test of the axisymmetric engine reached the highest Mach number of any scramjet engine flight test to date. The flight test and the accompanying ground test program, conducted in a CIAM test facility near Moscow, were performed under a NASA contract administered by the Dryden Flight Research Center with technical assistance from the Langley Research Center. Analysis of the flight and ground data by both CIAM and NASA resulted in the following preliminary conclusions. An unexpected control sensor reading caused non-optimal fueling of the engine, and flowpath modifications added to the engine inlet during manufacture caused markedly reduced inlet performance. Both of these factors appear to have contributed to the dual-mode scramjet engine operating primarily in a subsonic combustion mode. At the maximum Mach number test point, combustion caused transition from supersonic flow at the fuel injector station to primarily subsonic flow in the combustor. Ground test data were obtained at similar conditions to the flight test, allowing for a meaningful comparison between the ground and flight data. The results of this comparison indicate that the differences in engine performance are small

Flight testing an axisymmetric scramjet Russian recent advances

Communication to : 44th congress of the International Astronautical Federation, Graz (Austria), October 16-22, 1993 - paper IAF 93-S.4.485SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1995 n.81 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc