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Sharp DR 90 Nemesis

2 pp

The most successful aircraft in air racing history, Nemesis dominated its competition winning 47 of its 50 contests from 1991 until its retirement in 1999. Flown by pilot and designer Jon Sharp, it won nine consecutive Reno Gold National Championships and 16 world speed records for its class including the 3 km mark of 290.08 mph and the 15 km mark of 282.58 mph set in 1998. Nemesis was the Interna

#ld1-1643400021979-1643400040094-0

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Shims for forward antenna, Pioneer 10 / 11, reconstructed full-scale mock-up

1 pp

During the latter 1960s, G.A. Flandro, a JPL scientist, discovered that once every 176 years both the Earth and all the giant planets of the Solar System gather on one side of the Sun. This geometric line-up made possible close‑up observation of all the planets in the outer solar system (with the exception of Pluto) in a single flight, the "Grand Tour." The flyby of each planet would bend the spac

#ld1-1732699850745-1732699869548-0

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Sight, Drift & Ground Speed, Gatty

1 pp

3-D (Sight): 34.3 x 22.9 x 10.2cm (13 1/2 x 9 x 4 in.)

#ld1-1643400021979-1643400022713-0

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Sikorsky HO5S-1

2 pp

28ft. 8in. x 8ft. x 8ft. 9in.

#ld1-1643400021979-1643400043953-0

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Sikorsky YH-19

5 pp

The YH-19 was the first practical single-rotor utility helicopter. The first in Sikorsky's successful S-55 series, it solved the center-of-gravity problems of earlier models by shifting the engine to the front and the passenger compartment to beneath the rotor hub. Other innovations included offset-flapping hinges and hydraulically boosted irreversible controls. Designed for the Air Force for arct

#ld1-1643400021979-1643400043612-0