The V-weapon launch corps remained in service until the end of March. Then Kammler went to the Harz Mountains, to command a planned final effort to use the weapons to prevent a link-up of the American and Soviet forces - a plan that came to nothing. In all, 9,300 V-1's had been fired at Great Britain in its seven months of service, of which 6,000 reached the coast. 4,300 V-2's had been launched in combat, 1,500 at London, and 2,100 at Antwerp. 20% of these used the radio guidance system. The V-1's range had been extended in test models to 370 km, although only a few of these modifications had reached the front. On the other hand, the range of the V-2 had been extended to 350 km, and this was the version provided to the front-line troops in the last months. But at the end of March 1945 the Germans evacuated the V-weapon firing areas in Holland.

The Office, Chief of Ordnance (OCO) disapproved Redstone Arsenal's proposed development plan for what would become the Redstone missile. The arsenal had intended to implement the manufacturing program for these missiles by creating an assembly line in its own development shops. The OCO, however, required that the development effort be done by a prime contractor. Nonetheless, delays in the acquisition of production facilities for the prime contractor caused Redstone Arsenal to fabricate and assemble the first 12 Redstone missiles along with missiles 18 through 29.

Army Ballistic Missile Agency requested permission to use its Jupiter C missile to launch a satellite. The Army Ballistic Missile Agency requested that the Department of Defense grant permission to use its Jupiter C missile to launch a satellite, "in view of Vanguard delays and increasing evidence that the Soviets would be first in space--an event certain to inflict 'serious damage' to the prestige of the United States. The Army's proposal was rejected by the Department of Defense, presumably in line with the policy announced by the President on 29 July 1955, that the United States would remain strictly within its International Geophysical Year satellite commitment without using military missiles, thus clearly demonstrating United States intent to explore space for peaceful purposes. (Bowen, Threshold of Space, pp, 10-11.)

A $61,000 contract was signed by the Yerkes Observatory, University of Chicago, and the Air Force. Gerard P. Kuiper, principal investigator, was to produce a new lunar photographic atlas. The moon's visible surface would be divided into 44 areas, and each would be represented by at least four photographs taken under varying lighting conditions. Additional Details: here....

H. Kurt Strass of the Space Task Group (STG) at Langley Field, Virginia described some preliminary ideas of STG planners regarding a follow-on to Mercury: (1) an enlarged Mercury capsule to place two men in orbit for three days; (2) a two-man Mercury capsule and a large cylindrical structure to support a two-week mission. (In its 1960 budget, NASA had requested $2 million to study methods of constructing a manned orbiting laboratory or converting the Mercury spacecraft into a two-man laboratory for extended space missions.) Additional Details: here....

The group was selected to provide pilots for X-20A Dyna-Soar spaceplane flights.. Qualifications: Assigned from pool of active USAF and NASA Test Pilots.. Ten test pilots (7 USAF, 3 NASA) underwent physical examinations in August 1959. Seven were secretly selected in April 1960.

A Thor/Able II booster placed NASA's Television and Infrared Observation Satellite (TIROS) weather satellite into the most accurate orbit yet achieved by any U.S. satellite. TIROS I opened a new era in meteorology by transmitting nearly 23,000 pictures of global cloud cover from 450 miles in space and providing the first glimpse of global cloud structure data. TIROS I completed 1,302 orbits before its operational life ceased on 29 June 1960. TV and Infrared Observation Satellite; returned 22952 cloud cover photos. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

The Titan II-Gemini Coordination Committee was established to direct efforts to reduce longitudinal vibration (POGO) in the Titan II and to improve engine reliability. Air Force Space Systems Division (SSD) and Aerospace had presented to NASA and the Air Force a series of briefings on the POGO problem that culminated in a briefing to the Gemini Program Planning Board. The main problem was that POGO level satisfactory in the weapon system was too high to meet NASA standards for the Gemini program, and further reduction in the POGO level required a much more elaborate and extensive analytic and experimental program than had so far been considered necessary. The board approved the SSD/Aerospace proposals and established a committee to oversee work toward a POGO remedy. The high-level committee was composed of officials from Air Force Ballistic Systems Division, SSD, Space Technology Laboratories, and Aerospace.

The first stage of the Saturn IB booster (the S-IB-1) underwent its first static firing at Huntsville, Alabama. The stage's eight uprated H-1 engines produced about 71,168-kilonewtons (1.6 million lbs) thrust. On April 23, Marshall and Rocketdyne announced that the uprated H-1 had passed qualification testing and was ready for flight.

Grumman presented to MSC its recommendations for an all-battery electrical power system for the LEM:

• Two batteries in the ascent stage
• Four batteries in the descent stage
• A new power distribution system
• Active cooling for the descent batteries and electrical control assemblies

In a meeting of Soviet Ministers, it is revealed that Voskhod s/n 7, 8, and 9 will likely not be completed. Kamanin objects - he wants these flights to be used for manned test of military equipment in space. He does not trust waiting even further for the availability of the untested and unflown 7K-OK spacecraft.

Ministry of Defense directive laid out the production rate for both the L1, Block D, and 7K-OK for the podsadka program. Ministry of Defense directive (Mishin Diaries 1-234) laid out the production rate for both the L1, Block D, and 7K-OK for the podsadka program:
7K-L1: one unit per month beginning 15 Sept 66
7K-OK for podsadka delivery of crews to L1: 1 unit per month beginning Oct 66
Block D deliveries: 1 unit 15 Sept; 1 unit 15 Oct; 1 further unit in October; and 1 unit per month thereafter.(Mishin Diaries 1-234)

Ustinov reviews the cosmonauts. Kamanin urges that a manual docking be allowed on the Soyuz 1/2 mission - he had argued the same point with Korolev before his death. Komarov say he can accomplish a manual docking from 350 km range (once the Igla automatic system has brought him there from 23 km range). There follows a discussion of an all-female flight. Four female cosmonauts would be assigned to the mission, and Kamanin would need 5 to 6 months to complete there training. The mission is designated 'Voskhod-6'.

Ye-8 proposed with a life support system to allow a lunar cosmonaut to remain on the moon until a rescue expedition could be launched with an LKR. As an alternative to a 2-launch scenario, the possibility was raised of the Ye-8 being equipped with a life support system to allow the cosmonaut to remain on the moon until a rescue expedition could be launched with an LKR. But Ye-8 chief designer Babakin said at that time that this was not feasible (Mishin Diaries 2-60; 2-62).

SAMSO's Minuteman Booster Program Office was integrated into the Ballistic Missile Defense Targets Division of the Deputy for Reentry Systems. The merger combined all SAMSO activities supporting the Army's Safeguard Systems Test Targets Program (SSTTP) under the Deputy for Reentry Systems.

Headquarters Air Force Western Test Range (AFWTR) was inactivated and Headquarters Space and Missile Test Center (SAMTEC) was activated at Vandenberg AFB. The 6595th Aerospace Test Wing at Vandenberg was reassigned from SAMSO to SAMTEC. The 6555th Aerospace Test Wing at Patrick AFB, Florida, was redesignated the 6555th Aerospace Test Group and assigned to the 6595th Aerospace Test Wing as part of the reorganization that brought AFSC range and launch operations at Vandenberg under a single command for the first time.

MOK-1 stages.
Booster R-7M - Payload to sun-synchronous ~ 12 tons. It will deliver the following to the MKBS:
1) MTKK Space Shuttle - manned version for delivery and return of the crew of astronauts on the MKBS.
2) MTKK Space Shuttle - cargo version.
3) SM Special Module - a non-returnable, autonomous and dockable with the MKBS (all-weather reconnaissance)
4) MSK - the inter-satellite ship - automatic and manned. Launch vehicle - N-11 Payload = 18 tons (23 tons)
MKBS-1 in sun-synchronous orbit.
(Mishin Diaries 3-184)

The Blok-I upper stage and Oko satellite were placed in a 231 x 490 km x 62.8 deg parking orbit. Following the stage burn the Lavochkin US-KS (Oko) elliptical orbit early warning satellite built by Lavochkin was not tracked immediately, but later was reported to be in the correct standard orbit.

From the US voluntary 'job jar' task list, after wakeup and before breakfast CDR Whitson and FE-2 Reisman downloaded the SLEEP (Sleep-Wake Actigraphy and Light Exposure during Spaceflight) experiment data from their Actiwatches to the HRF-1 (Human Research Facility 1) laptop, changed the lithium battery in Peggy's Actiwatch and initialized both their watches. Additional Details: here....