TacSat-1

TacSat-1

Infobox_Spacecraft
Name = TacSat-1


Caption = TacSat-1
Organization = NRL
Major_Contractors =
Bus =
Mission_Type = Technology demonstrator
Flyby_Of =
Satellite_Of = Earth
Orbital_Insertion_Date =
Orbits =
Decay =
Launch = 2009
Launch_Vehicle =
Carrier_Rocket = Falcon 1
Launch_Site = Omelek Island
Mission_Duration =
NSSDC_ID =
Webpage =
Mass = 108 kg
Power =
Batteries =
Orbit_regime = Low Earth orbit
Longitude =
Semimajor_Axis =
Eccentricity =
Inclination = 40°
Orbital_Period =
Apoapsis = 410 km
Periapsis =
Orbits Daily =
Repetitivity =
Main_Instruments =
Transponders =
Coverage =
Resolution =
Swath =
Spectral_Band =
Data_rate =
SSR =
IMG_Resolution =

TacSat-1 is an experimental satellite built by the Naval Research Laboratory on behalf of the United States Department of Defense (DOD) Office of Force Transformation (OFT). The second satellite in the series, TacSat-2, has already been launched. It is the planned payload of the sixth launch of the SpaceX Falcon 1.cite web|url=http://hobbyspace.com/nucleus/index.php?itemid=8333|title=Next Falcon I launch planned within 2 weeks|first=Clark S.|last=Lindsey|publisher=HobbySpace|work=RLV and Space Transport News|date=2008-09-11|accessdate=2008-09-13|language=English]

TacSat-1 will carry a variety of experimental payloads. [cite web | url=http://www.nrl.navy.mil/content.php?P=04REVIEW207 | title=Tactical Microsatellite Experiment (TacSat-1) |publisher=NRL] Much of the payload software is implemented through the use of bash scripts operating on the "Copperfield-2" general-purpose computer system aboard the spacecraft. [cite web | url=http://www.nrl.navy.mil/content.php?P=04REVIEW212 | title=Rapid Satellite Payload Development for TacSat-1 |publisher=NRL]

Purpose

The TacSat series of experimental spacecraft are designed to allow military commanders on a battlefield to request and obtain imagery and other data from a satellite as it passes overhead. Collected data will be delivered to field commanders in minutes rather than hours or days. The sensor on TacSat-1 can collect color images sharp enough to distinguish ground objects as small as 1 meter in diameter. [cite news | last=Singer | first=Jeremy | url = http://www.defensenews.com/story.php?F=2395306&C=airwar | title=USAF To Experiment With Satellite To Improve Ground Communications | publisher=Defense News | date=2006-12-04]

Launch

TacSat-1 is scheduled for launch in 2009 using a SpaceX Falcon 1 launcher. TacSat-1 was initially planned for launch in January 2004 but funding shortfalls and development delays precluded this date. It was initially scheduled to fly on the maiden flight of the Falcon 1, but technical problems led to another Falcon 1, with FalconSat-2, launching first. Following the failure of this launch, it was moved to the third flight, to allow a demonstration launch to precede it. The failure of the demonstration flight led to further delays. In August 2007, the Pentagon announced that the launch of TacSat-1 was canceled due to the completion of most of it's mission requirements by AFRL's previously launched TacSat-2. [cite web | url=http://www.space.com/spacenews/archive07/tacsat_0827.html | title=Pentagon Cancels TacSat-1 Mission | last=Berger | first=Brian | date=2007-09-06 | publisher=Space.com | accessdate=2008-08-09] In September 2008, this decision was reversed, and it was reported that TacSat-1 would be launched by the sixth Falcon 1, in 2009.

ystems

The TacSat series of satellites use commercial or available launchers, and largely off-the-shelf components, in order to reduce costs.

Platform

The TacSat-1 spacecraft is based on Orbital Sciences' MicroStar platform, also used for the Orbcomm communications constellation.

Camera

Developers

Apart from the Naval Research Laboratory (NRL), other organizations participating included:
* DOD Space Test Program (Space and Missile Systems Center’s Space Development and Test Wing)
* DOD Operationally Responsive Space Office
* Army Space Program Office
* Air Force Space Command
* Space Warfare Center
* NASA
* Jet Propulsion Laboratory (JPL)

References


Previous Mission:
None
Tactical Satellite Program Next Mission:
TacSat-2


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