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    1. Project Sunrise

    2. Los Angeles California 1974

    3. Flight of the Worlds First Solar Powered Aircraft

    4. by

    5. Roland Boucher

Lift off at 7:00 AM would result in a initial climb rate of 150 feet per minute increasing to 300 FPM by 9:00 AM. Sink speed at a weight of 21.3 pounds at MSL was estimated to  be  48 Feet per minute. this would increase to 336 FPM at the maximum altitude.                                                                      

      3P7

Sunrise will begin to descend about 4:00PM loosing 10,000 feet of altitude in the first hour. This sink rate will reduce as the air density increases at lower altitudes. Nevertheless Sunrise can remain airborne over a 24 hour period.

( Note: the original calculations made in 1974 were lost, the performance calculations above were made in 2009)