39 -- XY GANTRY

Notice Date

July 24, 2001

Contracting Office

NASA/Langley Research Center, Mail Stop 144, Industry Assistance Office, Hampton, VA 23681-0001

ZIP Code

23681-0001

Solicitation Number

1-074-RDF.1081

Response Due

July 31, 2001

Point of Contact

Artistine R. Lethcoe-Reid, Purchasing Agent, Phone (757) 864-2432, Fax (757) 864-9775, Email A.LETHCOE-REID@larc.nasa.gov -- Susan E. McClain, Contracting Officer, Phone (757) 864-8687, Fax (757) 864-8863, Email s.e.mcclain@larc.nasa.gov

E-Mail Address

Artistine R. Lethcoe-Reid (A.LETHCOE-REID@larc.nasa.gov)

Description

THIS NOTICE CONSTITUTES AMENDMENT NO. 2 TO THE COMBINED SYNOPSIS/RFQ FOR XY GANTRY. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to answer questions that were submitted by interested contractors. The applicatoin for the XY Gantry system is to be used as a gravity off-load device to enable studies of free flight modules engaged in general maneuvers and rendezvous and docking activities. These modules will be suspended from the gantry on a 25' cable and attached to the cable at their CG and have local propulsion systems. Thus it is desired that the provided gantry motion be smooth, so as not to excite/disturb the modules. The modules will generate a maximum of 250 lb down force on the gantry. Motion of the gantry will be directed by a tracking system located above the free flight module. As the module moves, the gantry will be directed to move to stay above the module. Thus there will be only small deviations of the cable from the vertical (less than 4 degrees). The system must be able to maintain a maximum velocity of 1 ft./sec. and peak accelerations of 1 ft./sec^2. Modifications to the velocity and acceleration command will occur at 20 Hz. Questions and Answers -- Q 1. What is the Static Load? Ans. 250 lbs. Q 2. What is the center line of load (moments -pitch, yaw, roll. Ans. See application above. Q 3. What is Max velocity -- Ans. 1 ft./sec 2. Q 4. What is the maximum acceleration/deceleration -- Ans. 1 ft/^sec. Q 5. What is the cycle description/time -- Ans. 20 Hz updates. Q 6. What is dwell time(s), positional repeatability, environmental conditions (temperture, dusty, moisture,..) Ans. System will be mounted in a room maintained between 60 and 100 degrees F. Q 7. What is the gantry span and overall length of main beam? Ans. 236.85. Q 8. What is the capacity? Ans. 250 lbs. Q 9. What is the height under the beam? Ans. 28 feet. Q10. Is the Gantry track mounted? Ans. Gantry will rest on an existing piece of 7" angle iron. Q11. Does this Macron have a web site we can view the system requested? Ans. Use yahoo. com to locate. Q12. Is speed of travel an issue? Ans. Yes.. see respones to first set of questions. Q13. Who's hoist is to be mounted on system? A "balance air" unit will be attached. Q14. What is the desired vertical lift required? Ans. 10 feet. The due date for receipt of offers is not extended. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on 06/19/01. Documents related to this procurement are available over the Internet and are in Microsoft Office 97 format and reside on the World Wide Web (WWW) server which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/LaRC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=CL&pin=23

Web Link

Click here for the latest information about this notice (http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=23#1-074-RDF.1081)

Record

Loren Data Corp. 20010726/39SOL001.HTM (D-205 SN50S7Y9)