CHAPTER 8 - AIR DELIVERY Flashcards
What are the 3 primary types of AD?
personnel container delivery system (CDS) heavy equipment (HE)
How many LLSL parachutists can be dropped from the paratroop doors? From the ramp and door?
paratroop doors - 80 per pass (20 static lines per anchor cable is not exceeded)
ramp and door - one anchor cable is used each pass with a max of 20 jumpers
Above what altitude constitutes Military Free Fall?
3,000 AGL to 35,000 MSL
How many containers can be dropped at one time?
16 individual A-22 containers or up to 10 A-7A/A-21 containers
What is the preferred method for CDS drops?
Centerline Vertical Restraint System
Why is CVR the preferred method for CDS drops?
provides the required vertical restraint without the use of 5000 lb straps
What skid boards is the CVR system compatible with?
48 x 48 (16 bundles may be dropped)
48 x 53.5 (14 bundles may be dropped)
48 x 96
When is a buffer stop assembly (BSA) used?
for all CDS loads in excess of 5000 lbs
Provides 3G forward restraint
What weight constitutes an HE load?
no less than 2520 lbs and no more than 42000 lbs
When do jumpers require floatation devices and a minimum of 1 rescue boat?
when a DZ is within 1000 meters of water (greater than 4 ft deep or 40 ft wide)
Minimum LE-PI
HE (<1100’ AGL)
CDS (<600’ AGL)
Personnel (<1000’ AGL)
HE - 500
CDS - 200
Personnel - 300
When do DZ surveys become obsolete?
5 years after the date of MAJCOM approval
AD
When should you use safety zone distances?
during peacetime personnel drops
Do you use safety zone distances for HALO/HAHO?
No
For peacetime personnel ADs, the safety zone will never be less than __ yards.
200
AD
What rate of deceleration does the CNI-MU use for slowdowns?
90 kts per minute (1.5 kts per second)
120 kts per minute (2 kts per second) is closer to the actual profile when the pilot flying conducts an aggressive, flight-idle slowdown
Does CAPS calculate a HARP circle?
No
What are some planning considerations for Combo ADs?
- use the cargo exit time, personnel exit time and 3 seconds for the exit of the first jumper
- base stick length and green light duration on the personnel CARP to ensure the last jumper will land safely on the DZ
- for multiple bundles, add 1 additional second per bundle
- for multiple HE platforms, add 4 seconds per platform
For JM-directed HALO drops, when may the green light be turned on?
1 minute prior to release point
When is the CARP INIT 6/6 page available?
Only when a drivable chute is selected on the CARP INIT 2/6 page
The PM will enter the surface winds in the CARP PROG 1/2 page no later than when?
the 1 minute checklist
The CNI TP must be cycled by a minimum of __ NM for HUD symbology and sensitive steering to the CARP.
2
When does the CNI switch from entered winds to sensed winds during ADs?
once the slowdown point is sequenced
AD
The CNI will continually update the ballistic wind and adjust the CARP until when during the run-in?
10 seconds prior to CARP
CNI switches to entered winds at 10 seconds
What is the difference between HVCDS and LVCDS?
HVCDS: stabilizing chutes to maintain the load in an upright position. Not intended to slow descent
LVCDS: chutes slow descent to minimize shock to load
What chutes are used for HVCDS?
12, 22, and 26 ft ring-slot chutes; reefed G12E, G13, G14; or LCADS-HV
What ballistics are used for LCADS-HV and how is it rigged?
Ballistics for a 26 ft ring slot chute and rigged for breakaway to prevent aircraft damage regardless of drop altitude
What type of platforms do we use for HE?
Type V platform
What system must be operating IOT drop HE?
Operable dual rail system
Operable bomb-rack to launch the extraction parachute
Unobstructed left hand dual rail cover to allow travel of the Extraction Force Transfer Coupling (EFTC) actuator
Are towplates used for HE drops?
No
What are the primary chutes used for HE drops?
G-12E
G-11B
G-11C
What ballistic data should you use for all cargo drops and why?
The USAF C-130H ballistics data due to the lack of the Enhanced Roller System (ERS) on the USMC J model.
What are the limits to how many door bundles can be dropped?
Limited to one bundle per exit used
Can be dropped from paratroop doors or off ramp
How many CRRCs and jumpers can be passed? What are some limitations?
2 CRRCs and 18 jumpers (limited to daylight ops)
OR
1 CRRC and 19 jumpers on single pass
What systems does JPADS use?
Aircraft GPS antenna
Steerable chutes
Modular Autonomous Guidance Unit (MAGU) to steer loads to a designated PI
What are the airspeed limits? LLSL HALO/HAHO Equipment/Combo HE CRRC/CRL/CDS/HVCDS Door bundle
LLSL - 130
HALO/HAHO - 130 (110 min - 150 max)
Equipment/Combo - 130 (140 when gross weight >120K)
HE - 140
CRRC/CRL/CDS/HVCDS - 130 (140 when gross weight >120k)
Door bundle - 130
What are the surface wind limits? LLSL LAND LLSL WATER MFF LAND MFF WATER
LLSL LAND - 13 kts
LLSL WATER - 17 kts
MFF LAND - 18 kts
MFF WATER - 20 kts
Difference between breakaway and non breakaway
Breakaway - extraction line is not left
Non break away - extraction line is left (used for lower altitudes to ensure chute comes out)
DZ size criteria
When do we increase the size?
For official sunset to sunrise increase length and width by 100 yards (add 50 yards to each side and 50 yards to each end)
What is the minimum size criteria for a single item?
It places the PI in the center of the DZ
This concept reflects the need to maintain a minimum distance on the back of the DZ that is equal to the minimum LE to PI distance for a given drop altitude and environment
What does RAMZ stand for?
Rigging Alternate Method Zodiac
What are some water DZ markings?
3 or more boats in formation to make an inverted L
Floating smoke pot to indicate PI
Day markers to identify boat can be signal mirrors, VS17 panels, or smoke
Night markers to identify boat can be colored lights (green on bow red on stern bow into the wind), rotating beacon, light gun, strobe light (white or IR)
What are some land DZ markings?
raised angle markers (RAM), VS-17 marker panels, visible lighting systems, and light beacons.
Virtually any type of lighting or visual marking system is acceptable if all participating units are briefed and concur.
Night markings may include a light gun, flares, fire pots, railroad fuses, flashlights, chemlights, and infrared (IR) lighting systems.
Electronic NAVAID markings (ZM, SST-181, TACAN), etc.) may be used for either day or night operations and placed as directed by mission requirements.
When do we get CARP VERT?
- when drop altitude is at least 2000 ft above PI elevation and aircraft is off the drop altitude by >200 ft (above or below)
- when drop altitude is less than 2000 ft above PI elevation and aircraft is above the drop altitude by >200 ft or the aircraft is 10% below the drop altitude AGL
When do we get CARP XTRK?
When crosstrack error is greater than 150 meters (164 yards)
At what timing in the drop sequence would we get CARP VERT and/or CARP XTRK?
Inside 30 secs
When are sensed winds used in place of entered winds?
- ballistic wind has not been entered
- a/c has passed the SD point
- a/c is within 200 ft of drop altitude
Define DQ
Constant, in secs, that compensates for the non-linear deceleration in forward speed of a load as it approaches stabilization
DQ = (FTD-ED)/EGS
Define Drift Effect
Horizontal distance traveled downwind by a load under full canopy
Define Exit Time (ET)
Elapsed time, in secs, from green light to exit of FIRST object
Define Forward Travel Distance (FTD)
Ground distance traveled by load from green light to stabilization
Define Forward Travel Time (FTT)
Compensates for the horizontal distance object travels from green light to stabilization
ET+DQ
Define Rate of Fall (RF)
Vertical velocity, in ft/sec, of load while under full canopy
Define Stabilization
Point in the drop sequence where descent is within 10% of a constant day sea level rate of fall. Normally forward velocity has decreased to 0
Define Time of Constant (TFC)
Constant, in secs, compensates for the non linear rate of fall from load exit to stabilization
Define Vertical Distance
Distance, in ft, a load falls after exiting aircraft and prior to stabilization.
Define Usable DZ Length (UDZL)
Distance from PI to trailing edge (minus safety zone)
Define Usable DZ Time (UDZT)
“red-light time” - equal to the time it takes a/c to fly the UDZL
UDZL converted to time in seconds. Subtract 1 second for HARP. Minimum is 3 seconds regardless of length
Define Green Light
Arrival of a/c at air release point. Signals start of UDZT
Define Red Light
Announce end of UDZT
Whenever possible, what should the inbound course be for a HARP?
Should be perpendicular to the wind line IOT allow all personnel to be released at approx the same distance from the intended PI
Combo
How much time do you add for multiple bundles? Multiple HE platforms?
1 additional second per bundle
4 seconds per HE platform
What’s the difference between primary combo method and alternate combo method?
Primary - plans for personnel to land on published PI and cargo lands within usable DZ
Alternate - cargo lands abeam the published PI with personnel landing within DZ on centerline
When should the alternate combo method be used?
Only if the cargo will not land within the usable DZ
What will the alternate combo method reduce?
May reduce stick size and usable green light time
If cargo will not land within the DZ using either primary or alternate what are some of our options?
- changing the type of chute on cargo
- dropping at a lower altitude to reduce the personnel drift
- compromise and accept the jumpers landing off centerline