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KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers wait to begin replace Shuttle Atlantis' Power Drive Unit (PDU), which is attached to the crane (center). The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC00pp0496

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers move the replacement Power Drive Unit (PDU) into the body of Space Shuttle Atlantis. The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC-00pp0500

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers help guide the replacement Power Drive Unit (PDU) for Space Shuttle Atlantis into place. The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC-00pp0499

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers help guide the replacement Power Drive Unit (PDU) for Space Shuttle Atlantis into place. The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC00pp0499

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a worker reaches toward the plastic-covered replacement Power Drive Unit (PDU) for Space Shuttle Atlantis as it is lifted by crane toward the tail. The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC00pp0498

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, a worker watches as the plastic-covered replacement Power Drive Unit (PDU) for Space Shuttle Atlantis is lifted by crane toward the tail. The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC00pp0497

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, work on replacing the Power Drive Unit (PDU) in Space Shuttle Atlantis is suspended in the early morning hours. The crane used to hoist the PDU is barely visible against the tail and next to a main engine nozzle. The Rotating Service Structure had to be moved away from the Shuttle to do the work. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC-00pp0501

KENNEDY SPACE CENTER, FLA. -- Space Shuttle Atlantis sits on launch Pad 39A waiting for the rotating service structure, pictured at left, to be moved into place for final launch preparations. Liftoff of Atlantis on mission STS-101 is scheduled for April 17 at 7:03 p.m. EDT. STS-101 is a logistics and resupply mission for the International Space Station, to restore full redundancy to the International Space Station power system in preparation for the arrival of the next pressurized module, the Russian-built Zvezda KSC00pp0410

KENNEDY SPACE CENTER, FLA. -- United Space Alliance technicians at Launch Pad 39A look at the site of the power drive unit (PDU) for the rudder/speed brake on Shuttle Atlantis. From left are Mark Noel, Tod Biddle and Bob Wright. Shuttle managers decided to replace the faulty PDU, about the size of an office copy machine, at the launch pad. If successful, launch preparations will continue as planned, with liftoff targeted for April 24 at 4:15 p.m. on mission STS-101. The mission is the third assembly flight for the International Space Station, carrying logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000. The crew will conduct one space walk to perform maintenance on the Space Station KSC-00pp0483

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers wait to begin replace Shuttle Atlantis' Power Drive Unit (PDU), which is attached to the crane (center). The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000 KSC-00pp0496

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Summary

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, workers wait to begin replace Shuttle Atlantis' Power Drive Unit (PDU), which is attached to the crane (center). The PDU controls the rudder/speed brake on the orbiter. Atlantis is scheduled to lift off April 24 at 4:15 p.m. EDT on mission STS-101, the third flight to the International Space Station. The primary mission is to carry logistics and supplies to the Space Station, plus the crew will be preparing the Station for the arrival of the Zvezda Service Module, expected to be launched by Russia in July 2000

The Space Shuttle program was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972. The Space Shuttle system—composed of an orbiter launched with two reusable solid rocket boosters and a disposable external fuel tank— carried up to eight astronauts and up to 50,000 lb (23,000 kg) of payload into low Earth orbit (LEO). When its mission was complete, the orbiter would re-enter the Earth's atmosphere and lands as a glider. Although the concept had been explored since the late 1960s, the program formally commenced in 1972 and was the focus of NASA's manned operations after the final Apollo and Skylab flights in the mid-1970s. It started with the launch of the first shuttle Columbia on April 12, 1981, on STS-1. and finished with its last mission, STS-135 flown by Atlantis, in July 2011.

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kennedy space center launch pad workers atlantis shuttle atlantis power drive power drive unit pdu controls pdu controls rudder brake orbiter sts mission sts third flight international space station logistics supplies crew zvezda module zvezda service module russia space shuttle nasa
date_range

Date

1960 - 1969
collections

in collections

Space Shuttle Program

place

Location

create

Source

NASA
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Link

https://images.nasa.gov/
copyright

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Public Domain Dedication (CC0)

label_outline Explore Power Drive Unit, Pdu Controls, Pdu

Topics

kennedy space center launch pad workers atlantis shuttle atlantis power drive power drive unit pdu controls pdu controls rudder brake orbiter sts mission sts third flight international space station logistics supplies crew zvezda module zvezda service module russia space shuttle nasa