The BOR-4 (БОР-4 Russian: Беспилотный Орбитальный Ракетоплан 4, Bespilotnyi Orbital'nyi Raketoplan 4, "Unpiloted Orbital Rocketplane 4") flight vehicle is a scaled (1:2) prototype of …

Jan 14, 2023 · The BOR-4 was clad in 118 tiles of the type developed for Buran as well as carbon-carbon nose cap and leading edge. As the BOR-4 were intended for orbital flight, they …

BOR-4 flew four successful test flights at speeds of from Mach 3 to 25 and altitudes of 30 to 100 km. These test flights confirmed the physical, chemical, and catalytic processes that operated …

Sep 6, 2012 · On June 4, 1982, the Soviet Union launched a small spaceplane called the BOR-4 from Kapustin Yar missile test range in Astrakhan Oblast, Russia.

The flights of "BOR-4" made it possible to make enormous progress in the design of heat shield, for the creation of the Buran's one: distribution of the temperatures according to the surface …

It is explained the usage of the BOR-4 model of the SPIRAL Orbiter for creation of the BURAN orbiter’s Heat Protection. Problems, course of tests of the BOR-4 and BOR-5 flying models …

A department at LII led by Gennady Vladychin proposed a 1-to-2 model of the Spiral orbiter dubbed BOR-4 -- a Russian abbreviation of "Unpiloted Orbital Spaceplane."

The BOR-4 flight vehicle is a scaled (1:2) prototype of the Soviet Spiral VTHL spaceplane. An uncrewed, subscale spacecraft, its purpose was to test the heatshield tiles and reinforced …

The BOR-4 flight vehicle is the scaled (1:2) copy of the SPIRAL. It has a tilting wing as well as the SPIRAL . During works at the SPIRAL system the BOR-4 wasn't launched but it was decided …

The BOR-4 flight vehicle is a scaled (1:2) prototype of the Soviet Spiral VTHL (vertical takeoff, horizontal landing) spaceplane. An uncrewed, subscale spacecraft, its purpose was to test the …