Hallo Mr. Mahdi,

 i advice you to read one book regarding atmospheric entry, the density at range 100 start fall exponentially. this is described as function of (

k = Boltzmann constant = 1.372X 10-16 erg/degree

T = temperature in kelvins

M = mean molecular mass of the air = 4.8 X 10-23 gm

g = acceleration of gravity

check this out: http://history.nasa.gov/SP-4211/ch6-2.htm

Warm Regards

Hallo Mr. Mahdi,

 i advice you to read one book regarding atmospheric entry, the density at range 100 start fall exponentially. this is described as function of (

k = Boltzmann constant = 1.372X 10-16 erg/degree

T = temperature in kelvins

M = mean molecular mass of the air = 4.8 X 10-23 gm

g = acceleration of gravity

check this out: http://history.nasa.gov/SP-4211/ch6-2.htm

Warm Regards

Hallo Mr. Mahdi,

 i advice you to read one book regarding atmospheric entry, the density at range 100 start fall exponentially. this is described as function of (

k = Boltzmann constant = 1.372X 10-16 erg/degree

T = temperature in kelvins

M = mean molecular mass of the air = 4.8 X 10-23 gm

g = acceleration of gravity

check this out: http://history.nasa.gov/SP-4211/ch6-2.htm

Warm Regards

Hallo Mr. Mahdi,

 i advice you to read one book regarding atmospheric entry, the density at range 100 start fall exponentially. this is described as function of (

k = Boltzmann constant = 1.372X 10-16 erg/degree

T = temperature in kelvins

M = mean molecular mass of the air = 4.8 X 10-23 gm

g = acceleration of gravity

check this out: 

http://history.nasa.gov/SP-4211/ch6-2.htm 

Warm Regards