These would run through August 9, 1938 and included 30 flight tests of 10-in.-diameter motors, in nitrogen-pressured rockets. The series was divided into three sections: A, B, and C. Section A covered development of a nitrogen-pressured flight rocket using 10 in, motors based on the K series and ran from May 11 to November 7, 1936 (L1-L7). Length of the L Series Section A rockets varied from 10 ft 11 in, to 13 ft 6 1/2 in.; diameter 18 in.; empty weight 120 to 202 lb; loaded weight 295 to 360 lb; weight oxygen about 78 lb; weight gasoline 84 lb; weight nitrogen, 4 lb. References: 482 .
Recognizing that rocket test ranges will exceed White Sands capability, Cape Canaveral selected for future long range flights. President Truman signed a bill providing a 5,000-mile guided-missile test range, which was subsequently established at Cape Canaveral, Fla. Negotiations with British government begin for installation of string of tracking stations in Bahamas Islands. References: 47 .
Cosmic radiation; upper-air pressures and temperatures research. Ship launch. Launched at 1608 local time. Reached 169 km. NRL Viking No. 4 research rocket fired from the USS Norton Sound, near Jarvis Island in the Pacific (0.2 N 161.4 W), at the intersection of the geographic and geomagnetic equators. It set an altitude record for an American single-stage rocket and was the first firing of the Viking from shipboard.
Rocket performance test. Launched at 0800 local time. Reached 98.2 km.
NASA awarded a letter contract to General Dynamics/Convair to design and manufacture the Little Joe II test launch vehicle which would be used to boost the Apollo spacecraft on unmanned suborbital test flights. The Little Joe II would be powered by clustered solid-fuel engines. At the same time, a separate 30-day contract was awarded to Convair to study the control system requirements. White Sands Missile Range, N. Mex., had been selected for the Little Joe II max q abort and high-altitude abort missions. References: 16 .
MSC Deputy Director George M. Low recommended to Maxime A. Faget, MSC, that, in light of Air Force and Aerospace Corp. studies on space rescue, MSC plans for a general study on space rescue be discontinued and a formal request be made to OMSF to cancel the request for proposals, which had not yet been released. As an alternative, Low suggested that MSC should cooperate with the Air Force to maximize gains from the USAF task on space rescue requirements. References: 16 .
Replying to a suggestion by MSC Director Robert R. Gilruth that AAP capitalize on Apollo hardware to an even greater extent by using refurbished CSMs, Associate Administrator for Manned Space Flight George E. Mueller deferred any action toward implementing a competitive effort for such work. This was necessary, he said, because of the present unsettled nature of AAP planning. Additional Details: Refurbished CSMs proposed for AAP..
Salyut failure. Unsuccessful mission. Salyut out of control. Decayed May 22, 1973. Was to have been manned by initial crew of Leonov and Kubasov. Last chance to upstage Skylab, launched three days later. References: 1 , 2 , 5 , 6 , 67 , 274 .
Orbital Test Satellite; replacement for OTS-A; communications experiments. European Space Agency satellite. Launch time 2259 GMT. Reached definitive position, 10 deg east longitude, on May 24 at 0800 GMT. Launch by US Delta rocket. References: 1 , 2 , 5 , 6 .
Energia was to deliver the military Skif-DM Polyus battle station into orbit. Due to delays in completion of the enormous static test facility at Baikonur, which could test the entire Energia vehicle stack, it was decided to launch the vehicle without the verification the tests would provide. The launch of 6SL was planned for 21:30 Moscow time. It was delayed five hours when a leak was detected in the Block 3A electrical distribution section, then by another hour due to a fault LH2 thermostat. The launch vehicle performed successfully, but the payload failed to inject itself into orbit due to a guidance system failure.
Second attempted capture of Intelsat V1. References: 66 .
Geosynchronous. Stationed over 125.0E References: 4 .
Navstar Block IIR GPS navigation satellite, GPS IIR-4 or SVN 51. Placed into an elliptical transfer orbit. The satellite's Thiokol Star 37 apogee motor was used to circularise the orbit at 20,000 km.