subject
Engineering, 03.04.2020 22:18 anashaye

A radome is to be designed for the nose of an aircraft to protect an X-band weather radar operating between 8.5 and 10.3 GHz. A new type of foam material with r = 2 (assume lossless and nonmagnetic) is chosen for the design. Assuming a flat, planar surface, determine the minimum thickness of the foam that will give no reflections at the center frequency of the band

ansver
Answers: 1

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
question
Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
Answers: 2
question
Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
question
Engineering, 04.07.2019 19:10
Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.
Answers: 1
You know the right answer?
A radome is to be designed for the nose of an aircraft to protect an X-band weather radar operating...
Questions
question
Health, 07.01.2021 14:00
question
Mathematics, 07.01.2021 14:00
question
Mathematics, 07.01.2021 14:00
question
Mathematics, 07.01.2021 14:00
question
Chemistry, 07.01.2021 14:00
Questions on the website: 13722367