OPS 3762, also known as FTV-2355, was an American reconnaissance satellite which was launched in 1964.[2] It was the first radar imaging satellite to be launched, and the only Quill spacecraft to fly. Its mission was to demonstrate radar imaging techniques for future missions. However, the programme was cancelled before any more satellites were launched.[3]
OPS 3762 was a 1,500 kilograms (3,300 lb) spacecraft, based on the Agena-D which also served as the upper stage of its carrier rocket.[6] It operated for four days. Its orbit had a perigee of 208 kilometres (129 mi), an apogee of 222 kilometres (138 mi), 70 degrees of inclination, and an orbital period of 88.8 minutes.[2] Its side looking airborne radar produced images, which were returned in a KH-4 film capsule at the end of the mission.[7] OPS 3762 itself remained in orbit until 11 January 1965, when its orbit decayed and it reentered the atmosphere.[2] OPS 3762 completed its mission successfully.[8]
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).
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