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Operation of ARABS in Delayed Opening Mode - Continued WARNING It   is   highly   recommended   that   free   fall   bundles   he   ground controlled.  A parachutist descending below an ARABS in free fall  could  possibly  risk  collision  upon  deployment  of  his  main parachute. Free  fall  rate  of  descent  is  directly  related  to  the  size  and  weight  of  the payload.   A   heavier   payload   with   the   same   drag   area   will   have   a proportionately  higher  rate  of  descent.  As  an  example,  a  500  pound payload  with  a  drag  area  (bottom  surface)  of  approximately  1.4  square feet (10 x 20 inches) will descend under the drogue at approximately the same speed as a free fall parachutist, while a load with the same area and only 200 pounds in weight or a 500 pound payload with a standard size of 30 x 40 inches (8.33 ft2),  will descend at roughly half of that rate.  With larger  sized  payloads,  the  rate  of  descent  would  be  proportionately  less. This is an important consideration if the load is to be accompanied in free fall  by  a  parachutist,  for  air  control  of  the  load.  It  would  be  ultimately impossible  for  a  jumper  to  follow  a  bundle  that  is  only  descending  at  60 mph. 2-67
Figure 2-13.  Auxiliary Function Use

TM-10-1670-302-10 Aerial Resupply and Accompanying Bundle System (ARABS) NSN 1670-01-351-8587 Manual
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2-6.   Operating Procedures - Continued f. Auxiliary Function Use.  (See Figure 2-13.) NOTE The  six  auxiliary  (AUX)  switches  (1)  on  the  T/C  are  used  as on/off switch for various accessories on a selected AGU if the selected AGU has an AUX channel.  The following procedures will allow tile operator to turn that function on and off from the T/C. (1) Program  the  AGU  ID  codes  and  channel  frequency.    (Refer  to paragraph 2-5.) (2) With T/C on programmed frequency, select the AGU on which the auxiliary function is to be operated by pressing the appropriate AGU Switch  (2).    The  AGU  switch  selected  will  blink  on  and  off  and  be green if the system is in the Auto mode or red if the system is in the Manual mode. (3) Select the desired auxiliary function by pressing the specific auxiliary (AUX)  switch  (1).    When  an  AUX  switch  is  pressed,  it  will  show  a red blinking LED.  With a red blinking LED, the AUX on/off switches become operable for the first particular AUX channel. 2-68







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