AF flight 22. Attained mach 1.45 at 12239 m during dive. Fastest flight ever made in original XS-1 aircraft.

Bell flight 4. Plane demonstrated successful 4-cylinder engine operation.

Radiation, micrometeoroid data.

The Langley Research Center received approval for funds to conduct hypersonic flight tests for the Mercury spacecraft. Langley's Pilotless Aircraft Research Division would conduct tests on heat transfer rates at a velocity of mach 17, and dynamic behavior tests from a velocity of mach 10 to a subsonic speed.

NASA Aerobee research rocket with University of Michigan payload shot to 406-km altitude from Wallops Station.

MSC announced the beginning of CM environmental control system tests at the AiResearch Manufacturing Company simulating prelaunch, ascent, orbital, and reentry pressure effects. Earlier in the month, analysis had indicated that the CM interior temperature could be maintained between 294 K (70 degrees F) and 300 K (80 degrees F) during all flight operations, although prelaunch temperatures might rise to a maximum of 302 K (84 degrees F).

The boilerplate achieved a horizontal velocity of 60 feet per second and a vertical velocity of about 40 feet per second at the time of impact with the water. The test was conducted to obtain data on landing accelerations for various speeds and attitudes of the spacecraft.

North American began a series of water impact tests with boilerplate 1 to obtain pressure data on the upper portions of the CM. Data on the side walls and tunnel agreed fairly well with those obtained from 1/10 scale model drops; this was not the case with pressures on the top deck, however.

Launched at 1965 Croatan MRF Expedition LP25 - - Latitude: 10.17 S - Longitude: 79.83 W.

Launched at 1965 Croatan MRF Expedition LP26 - - Latitude: 10.17 S - Longitude: 79.45 W.

Maximum Speed - 5760 kph. Maximum Altitude - 31059 m.

IMBP has completed its tests of the ECS, which only ran 18.5 days before shutting down instead of the 20-day objective. This means essentially that any flight will be limited to 17 to 18 days, and a 20-day manned flight will not be possible during 1966.

Spacecraft built by Naval Avionics Facility, but refurbished by APL. Operated for 7 to 11 months, but then failed due to poor workmanship of NAFI components.

Hours are spent arguing over flying Feoktistov as a cosmonaut. Finally the matter is referred to the VPK. Kamanin briefs Ustinov's deputy on his position against Feoktistov. The L1 is reviewed. The star sensor only operated on Zond-4 on the fourth day of flight. However when it worked, it provided a 2 km positional accuracy at re-entry versus the 10 km required. The next L1 is to be launched on 23 April. If that date cannot be met, it will be launched on 25-30 April on a deep-space trajectory (not aimed at the moon).

Cloud, snow, ice cover data. Acquisition of meteorological information needed for use by the weather service.

The Chernov design has been selected for the Gagarin Monument in Moscow.

Central Committee of the Communist Party and Council of Soviet Ministers Decree 182-63 'On development of the Yantar-1KFT reconnaissance and cartographic satellite and the 11A511K launcher' was issued.

The launch of DOS#1 is set for 15-20 April. The first crew will launch three days later on a thirty-day mission. 25 days after they return to earth the second crew will be launched. That crew will stay aboard for 30 to 45 days. The spaceships and crews are declared ready for both missions.

Taking into account NASA and USAF comments on the draft proposals, and specification revisions, the teams of McDonnell Douglas/Martin Marrietta and North American Rockwell/General Dynamics made their final proposals under shuttle Phase B contracts. Based on the strict specifications of NASA, the low cross-range and high-cross range versions of the orbiter stages were similar. The associate contractors provided considerably different winged booster stage designs. One common feature was the use of aluminium structures and non-metallic thermal protection systems. In late 1969 the USAF had indicated a preference for all-aluminium structures in the shuttle due to a titanium shortage. This requirement forced a move to non-metallic thermal protection systems, which at the time it was thought would weigh 15% less but cost 300% more. Thermal protection shingles for a titanium structure would weigh 2300 to 4500 kg less, but an aluminium structure would weight about 1800 kg more - meaning there was no essential weight difference between the two approaches. Therefore at the aluminium structure was accepted as a specification requirement. In retrospect it could hardly have been necessary to apply this requirement on a project where only a few flight vehicles were be built. It made the shuttle much more vulnerable to any breach of heat shield integrity and would lead to the death of the Columbia crew 35 years later. The resulting need for a non-metallic thermal protection system would also have enormous cost and schedule consequences for the actual program.

Central Committee of the Communist Party and Council of Soviet Ministers Decree 'On adoption of Tselina-O into armaments' was issued.

Test of Block D stage in geosynchronous satellite delivery role. Placed dummy Raduga satellite in geosynchronous orbit. As of 4 September 2001 located at 44.61 deg E drifting at 1.835 deg E per day. As of 2007 Mar 11 located at 119.66E drifting at 1.819E degrees per day.

Area survey photo reconnaissance satellite; returned film capsule; separated science capsule.

High resolution photo reconnaissance satellite; returned film capsule; maneuverable.

Positioned in geosynchronous orbit over the Americas at 119 deg W in 1976-1984 over the Pacific Ocean 139 deg W in 1984-1985 As of 5 September 2001 located at 72.03 deg W drifting at 5.939 deg W per day. As of 2007 Mar 9 located at 127.82W drifting at 5.942W degrees per day.

Military cartographic mission.

Global Positioning System. Declared unusable on 21 May 1996 at 22:42 following two uncommanded changes in frequency standards.

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

A mysterious signal hit one of the transmitters aboard the Apstar-1 telecommunications satellite on March 14, disrupting more than 400 securities companies' communications, cutting off service to more than 10 million pager users in China, and affecting China's earthquake monitoring systems. Technicians ruled out a problem with the satellite and tests showed the interference was earth-based. Service was restored to most users of the satellite by switching them to other channels. Apstar-1, the first comsat of Hong Kong based APT Satellite Holdings, was launched in 1994 by a Long March 3.