Incoming generated [Jun 16, 2003]

0063-EX-PL-2003 Correspondence

Cal Poly State University

2003-06-16ELS_61698

From: Jake Schaffner

To: John Kennedy
Date: June 16, 2003

Subject:
FCC File #: 0063-EX-PL-2003
----------------------------------------------------------------------------------------------------------------
Message:

Mr. Kennedy,

Below is my response to your questions:

1. Area to mass ratio?

The surface area is 600 square centimeters, and the mass is 1kg. The area to
mass ratio would then be 60x10^-3 m^2/kg. The ballistic coefficient is about
16.7kg/m^2.

2. Expected orbital lifetime?

Based on the ballistic coefficient of 16.7kg/m^2 and the orbit altitude of
500-600km, the orbital lifetime would be about 1-2 years, according to the
charts I have.

3. Large orbital avoidance plan?

This satellite will launch from a Russian launch vehicle with 21 other
payloads and the orbital avoidance plans will be put in place by the launch
provider. We have no direct control over this.

4. Is there the ability to deorbit the satellite?

No. The expected orbital lifetime and LEO orbit does not seem to warrant
adding capability to deorbit. We do, however, have the capability to cease
all transmissions.

5. Is the lifetime is expected to be greater than 25 years?

No. The orbital lifetime is about 1-2 years and the mission itself only
lasts about 30 days. After this, we plan to disable the spacecraft, ceasing
all transmissions.

Let me know if you have any further questions.

Best Regards,

Jake Schaffner

Document Created: 2003-06-16 14:13:57
Document Modified: 2003-06-16 14:13:57

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