Questions and Answers.pdf

Questions/Answers

1. Can you advise us the manufacturer name? JetGo

2. The referenced solicitation (RFQ) 80NSSC22815131Q, calls for a 45kVA Aircraft Ground Power

Unit powered by a non‐DEF diesel engine (Tier 3). As you know, these engines are no longer able to be sold for on or off road use in the United States other than for governmental departments as they are high emission units. There are newer technologies currently available in commercial equipment that provide lower emissions and operational cost savings.

Specifically, eGPU’s utilize batteries and solid‐state converters to provide 400Hz and 28VDC output to the aircraft. eGPU currently on the market meet the ground power requirements of the aircraft, provide adequate run time for most mission requirements and require virtually no maintenance. Maintenance cost and fuel savings will recoup the differential in cost of the equipment while benefiting all stake holders with lower emissions. Would you consider bids for eGPU equipment as an alternative to the diesel equipment specified? We currently do not have the infrastructure on center to support eGPU’s. These unit have potential to be deployed where infrastructure is unknown and unlikely

3. Our GPU will comply with length and height requirements. But we’re a little wide, by about a foot. Will this disqualify us? These units will be going into shipping containers for deployments and the 60” max width is pretty firm to allow room for tie downs and access.

4. The specs ask for a Tier 4 Final engine under 75hp. But EPA requirements under 74hp, Tier 4 interim or “Tier 4i” is acceptable. Will Tier 4i be accepted by NASA? It will save the government some expense as T4F engines are grossly more expensive and require more maintenance and oversight. Please advise. (Any engine under 74hp is tier 4i automatically and does not use DEF fluid. Can NASA confirm you are looking for tier 4i vs tier 4 Final?) With new Tier 5 emission standards currently in development with the California Air Resources Board, NASA is looking for a Tier 4 Final engine to ensure the longevity of its fleet.

5. Is a 24V electrical system necessary? Our unit utilizes a 12V system. We can supply 24V but for an added expense. And generally, 24V is more useful in extreme cold weather climates. IE;

Alaska, Northern Alberta in the dead of winter. Although it can get chilly at Edwards AFB at night in January, it’s well within 12V capabilities. Unless NASA requires 24V for other reasons. Please advise. We utilize 24v charging systems throughout our inventory. This unit being 24v would make it easier for us to jump start or charge both on center or deployed.