Maximum Speed - 400 kph. Maximum Altitude - 1110 m. References: 94 .

Launched 14:13 local time. Reached 116.5 km. Carried cosmic radiation experiments for Naval Research Lab.

First U.S.-built complete liquid-rocket engine having a thrust in excess of 400,000 pounds was fired for the first time at Santa Susana, Calif. References: 17 , 27 .

A successful limited flight was made by the fourth Atlas fired from Cape Canaveral.

Emergency landing on Mud Lake after engine failed to light. Maximum Speed - 1038 kph. Maximum Altitude - 13,640 m. References: 38 , 49 , 97 .

MSC and OMSF agreed that an unmanned Apollo spacecraft must be flown on the Saturn C-1 before a manned flight. SA-10 was scheduled to be the unmanned flight and SA-111, the first manned mission. References: 16 .

James J. Haggerty, Jr., Space Editor for the Army-Navy-Air Force Journal and Register, called the assignment of the Manned Orbiting Laboratory to the Department of Defense 'an ominous harbinger of a reversal in trend, an indication that the military services may play a more prominent role in future space exploration at NASA's expense.... Whether you label it development platform, satellite platform, satellite or laboratory, it is clearly intended as a beginning for space station technology. It is also clearly the intent of this administration that, at least in the initial stages, space station development shall be under military rather than civil cognizance....'

Venera 6 was launched towards Venus to obtain atmospheric data. When the atmosphere of Venus was approached, a capsule weighing 405 kg was jettisoned from the main spacecraft. This capsule contained scientific instruments. During descent towards the surface of Venus, a parachute opened to slow the rate of descent. For 51 min on May 17, 1969, while the capsule was suspended from the parachute, data from the Venusian atmosphere were returned. The spacecraft also carried a medallion bearing the coat of arms of the U.S.S.R. and a bas-relief of V.I. Lenin to the night side of Venus. References: 1 , 2 , 5 , 6 , 64 , 296 .

Suborbital. References: 5 .

Studies had been conducted to determine an end-of-mission configuration for the Orbital Workshop and for maintaining the option of an OWS revisit at some future date. MSFC assessed the special deactivation requirements for the AM, MDA, and the Workshop required to establish a satisfactory, economical configuration. JSC made an evaluation of ground support monitoring and control options. The OWS would be left in a configuration that would permit a revisit at some future date without reactivation.

Manned two crew. Carried Oleg Makarov, Vladimir Dzhanibekov to Salyut 6; returned crew of Soyuz 26 to Earth. Docked with Salyut 6. Recovered March 16, 1978 11:19 GMT. References: 1 , 2 , 6 , 32 , 33 .

Eight satellites launched by a single carrier rocket. References: 1 , 2 , 5 , 6 .

Etalon series. Acquisition of data to enhance accuracy in identifying and forecasting movements of space apparatus, and for geophysical and geodetic research. References: 1 , 2 , 5 , 6 , 67 , 274 .

Glonass. Testing components and apparatus from the space navigation system being set up to determine the position of Soviet civil aircraft and vessels in the Soviet merchant marine and fishing fleet. Three satellites launched by a single rocket. References: 1 , 2 , 5 , 6 , 67 , 274 .

Glonass. Testing components and apparatus from the space navigation system being set up to determine the position of Soviet civil aircraft and vessels in the Soviet merchant marine and fishing fleet. Three satellites launched by a single rocket. References: 1 , 2 , 5 , 6 , 67 , 274 .

Stationed at 66.0 deg E. Launch vehicle put payload into supersynchronous earth orbit with MRS trajectory option. References: 2 , 5 , 6 , 278 .

Oko launch aborted at moment of engine ignition. Spacecraft was intended to cover Oko constellation planes 8/9 - 209 degree longitude of ascending node. References: 4 , 100 .

Geostationary at 52.8 degrees E. References: 4 , 276 .