|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 10 인용 특허 : 2|
Solar tabs are provided which have thermal emissivity and absorptivity properties designed to increase the attitude-control torques that can be generated with rotatable wings in a spacecraft. These increased torques enhance the ability to offset attitude-disturbance torques which typically tend to alter the attitude of a spacecraft from a desired attitude. The tabs include highly absorptive and nonemissive front faces, highly emissive back faces and a high thermal conductivity between the front faces and the back faces.
[ We claim:] [1.] Apparatus for using solar radiation to generate at least one attitude-control torque on a spacecraft which has a body and first and second wings extending oppositely from said body, said wings rotatable about a rotation axis and each having front and back faces, comprising:first and second tabs attached respectively to said first and second wings and oppositely spaced from said rotation axis;a front face formed by each of said tabs with a solar radiant-energy absorptivity greater than 0.5 and a thermal emissivity less than 0.5; anda bac...