10/5/553 01861625 Author(s): (Item 253 from file: 103) ERA-12-001433; EDB-86-185519 Kelley; Levy Title: Operation Greenhouse. Scientific Director’s report of atomic weapon tests at Eniwetok, 1951. Annex 8.0. General report of blast studies on aircraft Corporate Source: Massachusetts Inst. of Tech., Publication Date: 1 Apr 1985 p 25 Report Number(s): AD-A-995303/5/XAB Note: Extracted version of report dated Sep 51 Document Type: EDB8610 Availability: NTIS, PC A02/MF A0l. Subfile: BRA (Energy Research Abstracts). Country of Origin: United States Country of Publication: United States Abstract: None. Major Descriptars: *AIRCRAFT ENIWETOK; GROUND LEVEL EXPLOSIONS; GRA -- BLAST EFFECTS; *NUCLEAR EXPLOSIONS -- BLAST EFFECTS Broader Terms: (USA) Report Language: English Journal Announcement: Descriptors: Cambridge ISLANDS; LEVELS; (NTIS NTS) *GREENHOUSE PROJECT; MARSHALL ISLANDS; MICRONESIA; NUCLEAR EXPLOSIONS; OCEANIA Subject Categories: 450202* -- Explosions & Explosives -- Nuclear -Weaponry -- (-1989) 10/5/554 (Item 254 from file: 103) 01861624 BERA-12-001432; EDB-86-185518 Title: Operation Greenhouse. Scientific Director’s report of atomic weapon tests at Eniwetok, 1951. Annex 1.6, blast measurements. Part 3. Pressure near ground level. Section 4. Blast asymmetry from aerial photographs. Section 5. Balli-crusher-gauge measurements of peak pressure Corporate Source: Publication Date: Report Number(s): Naval Ordnance Lab., 1 Apr 1985 p 65 White Oak, MD (USA) AD-A-995299/5/XAB Note: Extracted version of report dated Feb 1952 Document Type: Report Language: English Journal Announcement: EDB8610 Availability: NTIS, PC A04/MF AOQl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: Aerial motion pictures from manned aircraft were taken of the Dog, Basy, and George Shots and from a drone aircraft on Dog Shot to determine whether asymmetries in the blast waves could be detected and measured. Only one film, that taken of Dog Shot from a drone, was considered good enough to warrant detailed analysis, but this failed to yield any positive information on asymmetries. The analysis showed that failure to obtain good arrival-time data arose from a number of cases, but primarily from uncertainities in magnification and timing. Results could only be matched with reliable data from blast-velocity switches by use of large corrections. Asymnetries, if present, were judged to have been too small or to have occurred too early to be detected with the slow-frame speed used. Recommendations for better results include locating the aircraft directly overhead at the time of burst and using a camera having greater frame speed and provided with timing marks. Major Descriptors: *BLAST EFFECTS -- PRESSURE MEASUREMENT; *GREENHOUSE PROJECT; *NUCLEAR EXPLOSIONS -- BLAST EFFECTS; *NUCLEAR EXPLOSIONS -SHOCK WAVES; *SHOCK WAVES -- ASYMMETRY Descriptors: GROUND LEVEL; VELOCITY Broader Terms: EXPLOSIONS; LEVELS; NUCLEAR EXPLOSIONS Subject Categories: 450202* 5003811 -- Explosions & Explosives -- Nuclear --