To: Potential future employers

From: Jim Baughman

Sr. Project Engineer

BFGoodrich Aerospace Data Systems Division

6600 Gulton Ct. NE 87109

(505) 822-1930 ext. 3027

Re: Greg Lenihan

Date: October 12, 1998

Dear Sir or Madame:

I am writing this letter to introduce to you Gregory J. Lenihan, a distinguished member of our technical staff at BFGoodrich Aerospace. I have worked closely with Greg over the past 2 years, during which time we have accomplished numerous system designs, from the preparation of proposals through the delivery of space-qualified hardware.

Greg joined BFGoodrich in 1996 in the capacity of Digital Designer. During the first year of his employment, Greg made significant contributions to the Gravity Probe B satellite program in the area of system architecture, as well as detail digital design. Greg’s responsibilities for this program included:

a) Design of the CCSDS 101 format Downlink to a TDRSS transponder. The 101 format encompasses interleaving Solid State Recorder (SSR) data with real-time data, Reed-Solomon burst encoding, pseudo-randomization, and convolutional encoding. This development included architectural definition, detailed design of 4 FPGAs, and board level design with functional redundant cross-strapping issues. Greg was key to preparing a winning proposal, and successfully designed, debugged and integrated this function through system qualification, and ultimately supported system-level integration on the satellite.

b) ADPLL—All Digital Phase Lock Loop. Greg designed, simulated, and debugged 3 Actel FPGAs in support of this design. Greg’s innovative approach combined classical PLL theory with clever digital realizations of the key loop elements.

c) Design of Slave Telemetry Logic board and Command Decoder board. Greg was responsible for the design, simulation, and debugged of the board as well as supporting FPGAs.

It must be noted that Greg assumed these challenging project responsibilities while simultaneously earning his MSEE at UNM. Greg works tirelessly, giving of his time selflessly.

During the past year, Greg has served on proposal teams for space-borne systems, including several Space Station bids such as the High Rate Communications Outage Recorder (HCOR) and the Express Pallet Controller Assembly (ExPCA). In addition to his Space Station involvement, Greg was the lead for the Bus Controller Electronics (BCE) proposal effort. Most recently, he has designed our second-generation Ethernet-to-fiber optic gateway in support of the Boeing Express Pallet Controller Assembly for the International Space Station. His involvement in the early phases of these projects has streamlined the design cycle. Greg is a strong conceptual designer, as well as possessing the ability and experience to perform detailed design of embedded processor systems, with supporting timing diagrams, simulations and worst-case analyses. Greg also has designed numerous complex state machines during his tenure at BFG.

I believe Greg is ready to assume lead roles in complex system design. He has demonstrated leadership skills in his proposal involvement over the past year. He is technically sound and has extensive flight hardware experience.

In closing, I endorse Greg Lenihan in his quest for furthering his career development. He is deserving of a senior level (principal) engineering position, and has demonstrated technical ability which supports that claim.

Please do not hesitate to contact me for further details. I would be pleased to discuss Greg’s performance in greater detail than this forum allows.

Respectfully,

Jim Baughman

Sr. Project Engineer

BFGoodrich Aerospace

jeb