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Performance Highlights of NASA Super Pressure Balloon Mid-Latitude Flights

机译：NASA超压气球中纬度飞行的性能亮点

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The flight performance of the National Aeronautics and Space Administration's (NASA) Balloon Program Office's Super Pressure Balloon (SPB) has demonstrated that longer duration balloon flights of heavy payloads at mid-latitudes are possible. With this balloon, float altitude excursions can be reduced by an order of magnitude or more and not require ballast for altitude stabilization to be flown, even in mid-latitudes. This development effort has focused on providing lift of 1,000 kg of science to greater than 33 km on a balloon that will fly at a near constant pressure altitude for extended periods. Short flight summaries for two ~532,200 m~3 (18.8-MCF) pumpkin shaped Super Pressure Balloons are provided. The first was flown in Antarctica in 2014 and the second from Wanaka, New Zealand in March 2015. With Wanaka as a new NASA BPO launch site, a second flight of the same sized balloon was launched in 2016. This SPB flew the Compton Spectrometer and Imager (COSI) gamma ray telescope as a mission of opportunity. Details on the flight preparations, the long wait for launch conditions, and details on the flight and flight performance plots for test flight 669NT are detailed in this paper. This flight flew for almost 47 days. Additional considerations related to overflight on these long flights is also presented. Preparations for the planned New Zealand 2017 Super Pressure Balloon test flight 679NT are presented. This large pumpkin shaped Super Pressure Balloon is part of the longer term strategy to offering the capability of extended duration stratospheric flights of large science instruments at mid latitudes. These flights represent critical steps in the process to qualify this balloon design as a standard flight offering by the NASA Balloon Program, and a new platform for the science community.
机译：美国国家航空航天局（NASA）气球计划办公室超压气球（SPB）的航班表现已经证明，在中纬度地区的较长持续时间气球的飞行是可能的。用这个气球，浮子高度偏移可以减少一个数量级或更多级，而且不需要镇流器来飞行到海拔稳定，即使在中等纬度中也是如此。这种发展努力侧重于将1000公斤科学的提升到大于33公里的气球，这将在近期恒定的压力高度飞行。提供两〜532,200 M〜3（18.8-MCF）南瓜形超压气球的短途航班摘要。第一个在2014年在南极洲飞行，第二2015年3月从瓦纳卡飞往Wanaka。随着Wanaka作为新的NASA BPO发射网站，第二次飞行的同一大小气球在2016年推出。该SPB飞行康普顿光谱仪和成像仪（Cosi）伽马雷望远镜作为机会的使命。关于飞行准备的详细信息，长时间等待发布条件，以及关于试验航班的飞行和飞行性能图的详细信息，请参见本文。这次飞行飞行了近47天。还提出了与这些长途航班过度过度相关的其他考虑因素。提出了计划新西兰计划新西兰的准备超压力气球试飞679NT。这种大南瓜形超压力气球是长期策略的一部分，以便在中纬度地区提供大型科学仪器的延长持续时间平流层飞行能力的一部分。这些航班代表了符合美国宇航局气球计划的标准航班，以及美国宇航局气球计划的标准航班，以及科学界的新平台。

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