1 / 16

DESERT OPERATIONS

DESERT OPERATIONS. Caspian Sea. Med. Sea. Persian Gulf. Red Sea. Arabian Sea. Indian Ocean. REFERENCES. FM 1-202, Environmental Flight FM 1-230, Meteorology for Army Aviators, September 1982 FM 90-3, Desert Operations, August 1993. OUTLINE. Desert Weather Desert Flying

remedios-dudley
Download Presentation

DESERT OPERATIONS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DESERT OPERATIONS Caspian Sea Med. Sea Persian Gulf Red Sea Arabian Sea Indian Ocean

  2. REFERENCES FM 1-202, Environmental Flight FM 1-230, Meteorology for Army Aviators, September 1982 FM 90-3, Desert Operations, August 1993

  3. OUTLINE • Desert Weather • Desert Flying • Density Altitude • Sand • Hazards to Flight

  4. DESERT WEATHER • Temperature • Max recorded: 136o F, (58o C). 160o inside a WW2 tank. • Minimum temperature in Siberian and Gobi deserts dive to -50o F (-45oC). • Day/night fluctuations reach as much as 72o F in the Sinai • Wind • Iran is known for its “wind of 120 days”. The wind blows almost constantly at velocities of up to 70 mph. • Sandstorms may develop to thousands of feet high and last for several days. They may form and stop suddenly. • Visibility may go from 30 miles to 30 ft. in minutes. • Precipitation • Lack of water is the most important single characteristic of the desert. • Annual rain fall may vary from 0 to 10 inches. • Severe thunderstorms may cause flash flooding.

  5. ACCLIMATIZATION • Significant acclimatization can be attained in 4-5 days • Full acclimatization takes 7-14 days , with 2-3 hours per day of exercise in the heat. • Acclimatization does not reduce, and may increase water intake

  6. DESERT FLYING

  7. DENSITY ALTITUDE • Pressure altitude corrected for non-standard temperature. • Altitude at which your aircraft will perform at. • As DA increases-------air density decreases

  8. DENSITY ALTITUDE • As we increase in altitude-----the pressure around us decreases • At sea level/standard day (15oC.) 29.92 in = 14.7 psi. • At 18,000ft = 7.0psi. • As temperature increases-----the density (thickness) of the air decreases. (air molecules move further apart.)

  9. DENSITY ALTITUDE FL 180 Sea Level = Air Molecules

  10. Effects of DA on aircraft performance? • Reduced horsepower (Torque) available. • As DA incr. - air molecules spread out - less air going into the engine = less horsepower (Torque) being produced. • Reduced wing efficiency • Less air molecules acting on the wings to produce lift.

  11. RESULTS • Increased takeoff roll • Reduced climb performance (ft./min.) • Increased landing distance (higher TAS, higher GS) • Decrease in the “excess power available” • Aircraft response----more sluggish • Deceleration effects (ability to slow down, and not fall through)

  12. What to do about it • Plan ahead-----ppc, understand how DA will affect aircraft performance. • ANTICIPATE!!!

  13. Sand and the aircraft • Engines/blades [blade erosion,wear on engine components(particle separator, filters,inlet and turbine blades)] • higher than normal oil temperatures • Avionics • electricity will attract the dust • overheat of the black boxes • lead acid batteries more susceptible to overheating in the desert

  14. HAZARDS TO FLIGHT • Sandstorms • Altitudes up to 10,000 feet • Near zero visibility • High winds

  15. AIRCRAFT OPERATIONS Engine TGT High TGT during engine start Avionics High humidity can subject electronics equipment to malfunction due to corrosion

  16. QUESTIONS?? ?

More Related