(October 22, 1991) The HL-20 was built at Langley in October 1990 and is a full-scale non-flying mockup. This mockup was used for engineering studies of maintainability of the vehicle, as testing crew positions, pilot visibility and other human factors considerations. The HL-20 was a direct derivative of the HL-10 vehicle tested in the 1960s and bears a very close resemblance to engineering drawings produced at that time. Although evaluated as a possible "space taxi," the HL-20, sometimes called the "Personnel Launch System," was never built. (Image # L-1991-14834)

---

Size: 2043px × 1634px
Photo credit: © NC Collections / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: body, hl-10, hl-20, langley, launch, lifting, model, personnel, pls, system